Method and system for forecasting radionuclide ocean transport diffusion path

Abstract

The invention discloses a method and a system for forecasting a radionuclide ocean transportation diffusion path, and the method and the system are used for updating a nuclear pollution area in combination with the diffusion of ocean radionuclides, and determining the atmospheric environment information of a nuclear pollution sea area from an atmospheric environment information forecasting system; selecting hydrodynamic element information from a plurality of marine environment information forecasting systems in combination with the spatial resolution and the regional range of each marine environment information forecasting system; and thus, optimal ocean water power driving information and sea surface driving information are established to carry out diffusion path forecasting. Meanwhile, according to the method, based on the types of radionuclides, a corresponding model is selected to forecast the marine transportation diffusion path of the radionuclides, and for the radionuclides which are easily adsorbed to suspended solids, the marine transportation diffusion path of the radionuclides is predicted by combining adsorption and sedimentation driving information of the suspended solids to the radionuclides while diffusion path analysis is carried out. And the prediction accuracy of the radionuclide ocean transport diffusion path can be improved.

Description

Technical Field

[0001] The present invention relates to the field of nuclear pollutant treatment, and in particular to a method and system for predicting the ocean transport and diffusion path of radioactive nuclides. Background Art

[0002] After radioactive nuclides enter the ocean, they are affected by various factors such as the ocean, tides, and wind, and diffuse, migrate, and are transmitted along the ocean circulation system. They may have certain potential impacts on the marine ecosystem or human health through marine life or the public's ingestion of seafood.

[0003] Therefore, the prediction of the transport and diffusion paths of radionuclides in the ocean plays an irreplaceable role in strengthening the emergency response capabilities of nuclear accidents and assisting pollution decision-making. Summary of the invention

[0004] The object of the present invention is to provide a method and system for predicting the transport and diffusion path of radionuclides in the ocean, so as to predict the transport and diffusion path of radionuclides in the ocean.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A method for predicting the oceanic transport and diffusion path of radionuclides, comprising:

[0007] Determine at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area, each of the marine environment information forecasting systems has a different spatial resolution, and the forecast range of the marine environment information forecasting system at least includes the pollution range;

[0008] According to the spatial resolution and regional range of each of the marine environment information forecasting systems, determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecasting systems, and determine the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecasting system;

[0009] Based on the hydrodynamic element information and the atmospheric environment information, construct the ocean hydrodynamic driving information and the sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area;

[0010] In the case where the nuclide category of the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, the parameters of the radionuclide transport and diffusion prediction model are configured according to the radionuclide information of the nuclear contaminated sea area; based on the suspended matter state variables in the suspended matter information, a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclide; through the radionuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the radionuclide within the forecast time period is determined;

[0011] In the case where the nuclide type of the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter, the parameters of the nuclear particle transport and diffusion prediction model are configured according to the radioactive nuclide information of the nuclear contaminated sea area; through the nuclear particle transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the nuclear particles in the forecast time period is determined;

[0012] According to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles, the pollution range is updated, and the step of returning to execute the step of determining at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area.

[0013] In an optional embodiment of the present application, the hydrodynamic element information and suspended matter information corresponding to the forecast time period are determined from each of the marine environment information forecast systems based on the spatial resolution and regional range of each of the marine environment information forecast systems, including: determining the marine environment information forecast system with the highest resolution as the target forecast system from each of the marine environment information forecast systems; and determining the hydrodynamic element information and suspended matter information corresponding to the pollution range in the target forecast system.

[0014] In an optional embodiment of the present application, the ocean hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area are constructed based on the hydrodynamic element information and the atmospheric environment information, including: obtaining the ocean nuclide diffusion calculation grid corresponding to the nuclear contaminated sea area; interpolating the atmospheric environment information to the ocean nuclide diffusion calculation grid through a bilinear interpolation method to obtain the sea surface driving information; interpolating the hydrodynamic element information to the ocean nuclide diffusion calculation grid through a multivariate multiple surface interpolation method to obtain the ocean hydrodynamic driving information.

[0015] In an optional embodiment of the present application, the radioactive nuclide information at least includes: the pollution scope of the nuclear contaminated sea area and the emission information of the nuclear pollution source; the parameter configuration of the radioactive nuclide transport diffusion prediction model according to the radioactive nuclide information of the nuclear contaminated sea area, and the parameter configuration of the nuclear particle transport diffusion prediction model according to the radioactive nuclide information of the nuclear contaminated sea area, including: parameter configuration of the radioactive nuclide transport diffusion prediction model and the nuclear particle transport diffusion prediction model according to the pollution scope of the nuclear contaminated sea area, the emission information of the nuclear pollution source and the forecast time period.

[0016] In an optional embodiment of the present application, the suspended matter information includes at least state variable information of phytoplankton, zooplankton, large debris and small debris; the suspended matter state variables in the suspended matter information are used to analyze the spatiotemporal changes of the suspended matter in the nuclear contaminated sea area to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclides, including: according to the suspended matter information, state variable analysis is performed on the suspended matter in the nuclear contaminated sea area to obtain the type of suspended matter, the amount of suspended matter and the generation parameters of the suspended matter in the nuclear contaminated sea area; based on the amount of suspended matter, the generation parameters and the type of suspended matter, a calculation scheme for the spatiotemporal changes of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclides.

[0017] In an optional implementation of the present application, it also includes: acquiring radionuclide data of the contaminated range of the nuclear contaminated sea area; using a data fusion method to fuse the radionuclide data to the nuclear contamination background field corresponding to the contaminated range, to obtain initial nuclear contamination information of the nuclear contaminated sea area.

[0018] In an optional embodiment of the present application, the radionuclide transport and diffusion prediction model is used to combine the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area to determine the ocean transport and diffusion path of the radionuclide within the forecast time period, including: using the radionuclide transport and diffusion prediction model, using a three-dimensional Euler algorithm, based on the initial nuclear pollution information and nuclear pollution source item information, combined with the ocean hydrodynamic driving information, the sea surface driving information and the adsorption and sedimentation driving information, to determine the ocean transport and diffusion path of the radionuclide within the forecast time period;

[0019] The method of using the nuclear particle transport and diffusion prediction model to determine the ocean transport and diffusion path of the nuclear particles within the forecast time period in combination with the ocean hydrodynamic driving information, the sea surface driving information, the initial nuclear pollution information and the nuclear pollution source item information of the nuclear contaminated sea area comprises: using the nuclear particle transport and diffusion prediction model to simulate the spatiotemporal behavior of radioactive nuclides in the marine environment by using a random walk particle method in combination with the ocean hydrodynamic driving information, the sea surface driving information, the initial nuclear pollution information and the nuclear pollution source item information, and determining the ocean transport and diffusion path of the radioactive nuclides within the forecast time period.

[0020] Compared with the prior art, the method for predicting the marine transport and diffusion path of radionuclides provided by the present invention updates the nuclear contaminated area in combination with the update of the diffusion path of marine radionuclides, and determines the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecast system according to the pollution range of the nuclear contaminated sea area, and selects corresponding hydrodynamic element information and suspended matter information from multiple marine environment information forecast systems corresponding to the pollution range in combination with the spatial resolution and regional range of each marine environment information forecast system, thereby establishing the optimal marine hydrodynamic driving information and sea surface driving information; at the same time, the method for predicting the marine transport and diffusion path of radionuclides selects corresponding models to analyze the marine transport and diffusion path of radionuclides based on the categories of radionuclides, which is conducive to improving the diversity and flexibility of the analysis of the marine transport and diffusion path of radionuclides, and for nuclides that are easily adsorbed on suspended matter, while analyzing the diffusion path according to the marine hydrodynamic driving information and the sea surface driving information, combined with the adsorption and sedimentation driving information of the nuclides by the suspended matter, it is conducive to improving the accuracy of the analysis of the marine transport and diffusion path of radionuclides.

[0021] The present invention also provides a forecasting system for the ocean transport and diffusion path of radionuclides, comprising:

[0022] A radionuclide information collection and processing module, used to collect radionuclide information of nuclear contaminated sea areas, and determine at least one marine environment forecasting system corresponding to the pollution range of the nuclear contaminated sea areas; each of the marine environment information forecasting systems has a different spatial resolution, and the forecast range of the marine environment information forecasting system at least includes the pollution range;

[0023] The marine environment information processing module is used to determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecast systems according to the spatial resolution and regional scope of each of the marine environment information forecast systems, and to determine the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecast system; and, based on the hydrodynamic element information and atmospheric environment information, to construct the marine hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area;

[0024] The nuclide source item processing module is used to analyze the nuclide category of the radioactive nuclide information in the nuclear contaminated sea area and determine the category of the nuclide; and configure the parameters of the radioactive nuclide transport and diffusion prediction model and the nuclear particle transport and diffusion prediction model according to the radioactive nuclide information in the nuclear contaminated sea area;

[0025] The radionuclide transport and diffusion prediction module is used to establish a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area based on the amount of the suspended matter, the generation parameters and the type of the suspended matter, when the type of the nuclide in the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, and obtain the adsorption and sedimentation driving information of the suspended matter on the nuclide; through the radionuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, determine the ocean transport and diffusion path of the radionuclide within the forecast time period;

[0026] A nuclear particle transport and diffusion prediction module is used to determine the ocean transport and diffusion path of nuclear particles in the forecast time period by combining the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area through the nuclear particle transport and diffusion prediction model when the nuclide type in the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter;

[0027] The pollution range updating module is used to update the pollution range according to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles.

[0028] Compared with the prior art, the beneficial effects of the device for predicting the ocean transport and diffusion paths of radionuclides provided by the present invention are the same as the beneficial effects of the method for predicting the ocean transport and diffusion paths of radionuclides described in the above technical solution, and will not be elaborated here.

[0029] The present invention also provides an electronic device, comprising:

[0030] processor;

[0031] a memory for storing instructions executable by the processor;

[0032] The processor is used to execute the above-mentioned method for predicting the ocean transport and diffusion path of radioactive nuclides by running the instructions in the memory.

[0033] Compared with the prior art, the beneficial effects of the electronic device provided by the present invention are the same as the beneficial effects of the method for predicting the ocean transport and diffusion path of radioactive nuclides described in the above technical solution, and will not be described in detail here.

[0034] The present invention also provides a computer storage medium, in which instructions are stored. When the instructions are executed, the method for predicting the marine transport and diffusion path of radioactive nuclides mentioned above is implemented.

[0035] Compared with the prior art, the beneficial effects of the computer storage medium provided by the present invention are the same as the beneficial effects of the method for predicting the ocean transport and diffusion path of radionuclides described in the above technical solution, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0037] Figure 1 A structural diagram of a forecasting system for the ocean transport path of radionuclides provided in an embodiment of the present application;

[0038] Figure 2 A flow chart of a method for predicting the ocean transport and diffusion path of radionuclides provided in an embodiment of the present application;

[0039] Figure 3 The structural diagram of the prediction device for the ocean transport and diffusion path of radionuclides provided for the implementation of this application;

[0040] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0042] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0043] In the present invention, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, the combination of a and b, the combination of a and c, the combination of b and c, or the combination of a, b and c, where a, b, c can be single or multiple.

[0044] After radioactive nuclides enter the ocean, they are affected by various factors such as the ocean, tides, and wind, and diffuse, migrate, and are transmitted along the ocean circulation system. They may have certain potential impacts on the marine ecosystem or human health through marine life or the public's ingestion of seafood.

[0045] Therefore, the prediction of the transport and diffusion paths of radionuclides in the ocean plays an irreplaceable role in strengthening the emergency response capabilities of nuclear accidents and assisting pollution decision-making.

[0046] However, in practice, it is found that the resolution of the current forecasting system for predicting the transport and diffusion paths of marine radionuclides is low, and the calculation models used for different radionuclides are relatively simple, which cannot take into account the requirements of high resolution and calculation efficiency. At the same time, the existing calculation models ignore the changes in suspended matter concentrations in marine ecosystems and cannot effectively reflect the vertical transport process of radionuclides.

[0047] In view of the above-mentioned technical status, the embodiments of the present application provide a method and device for predicting the ocean transport and diffusion path of radioactive nuclides, which are described in detail one by one in the following embodiments.

[0048] The method and device for predicting the ocean transport path of radionuclides are applied to the prediction system of the ocean transport path of radionuclides. In order to facilitate the understanding of the method and device for predicting the ocean transport path of radionuclides, the prediction system of the ocean transport path of radionuclides is first introduced below.

[0049] Please refer to Figure 1 , Figure 1 A structural diagram of a forecasting system for the ocean transport pathway of radionuclides provided in an embodiment of the present application.

[0050] like Figure 1 As shown, the prediction system for the ocean transport path of radionuclides includes: a radionuclide information collection and processing module 101, a nuclide source term processing module 102, a marine environment information processing module 103, a radionuclide transport and diffusion prediction module 104 and a nuclear particle transmission and diffusion prediction module 105.

[0051] Among them, the radionuclide information collection and processing module 101 is used to obtain the radionuclide information in the ocean collected by station monitoring, and analyze and process the acquired radionuclide information to determine the nuclear contaminated sea area and the pollution range of the nuclear contaminated sea area; and determine at least one marine environment forecast system corresponding to the pollution range of the nuclear contaminated sea area.

[0052] The radionuclide information can be understood as the type, concentration, distribution characteristics, location, depth, half-life, decay mode and other information of the radionuclide sampled in the nuclear contaminated sea area.

[0053] In an optional embodiment of the present application, the radionuclide information collection and processing module 101 is also used to integrate the radionuclide information obtained from station monitoring into the marine nuclear pollution background field, obtain the initial marine nuclear pollution field of the polluted sea area, and update the radionuclide information within the pollution range in real time.

[0054] The marine nuclear pollution background field can be understood as the relevant information of radioactive nuclides in the sea area affected by nuclear pollution; the marine nuclear pollution initial field can be understood as the initial information of nuclear pollution in the nuclear contaminated sea area obtained by integrating the marine radioactive nuclide information obtained by station monitoring on the basis of the marine nuclear pollution background field.

[0055] In the embodiment of the present application, the forecasting system of the radionuclide ocean transport and diffusion path is connected to a plurality of marine environment information forecasting systems 106, and different marine environment information forecasting systems have different corresponding forecasting ranges. The marine environment information forecasting system 106 is a system that uses mathematical models, observational data and modern information technology to predict the state of the marine environment. Such systems can provide forecasts of various physical, chemical and biological parameters of the marine environment, including but not limited to sea surface temperature, ocean currents, waves, tides, salinity, dissolved oxygen, nutrients, etc., as well as marine ecological information related to these parameters.

[0056] In the actual application process, in the radioactive nuclide information collection and processing module 101, after determining the nuclear contaminated sea area where nuclear contamination occurs and the corresponding pollution range, it will combine the pollution range and the regional range of the marine environment information forecast system, match at least one marine environment information forecast system corresponding to the pollution range, and select the one with the highest resolution from these marine environment information forecast systems as the target forecast system, and then extract the marine environment information collected by the target forecast system.

[0057] The marine environment information processing module 103 is used to determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecast systems according to the spatial resolution and regional range of each of the marine environment information forecast systems, and to determine the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecast system 108;

[0058] After obtaining the above-mentioned hydrodynamic element information, suspended matter information and atmospheric environment information, the marine environment information processing module 103 is also used to construct the marine hydrodynamic driving information and sea surface driving information of the diffusion of nuclides in the nuclear contaminated sea area based on the hydrodynamic element information and atmospheric environment information.

[0059] Furthermore, the nuclide source item processing module 102 is used to perform nuclide category analysis on the radionuclide information within the contaminated range collected and processed by the radionuclide information collection and processing module 101 to determine the category of the nuclide; and to configure parameters of the radionuclide transport and diffusion prediction module 104 and the nuclear particle transport and diffusion prediction module 105 according to the radionuclide information of the nuclear contaminated sea area, thereby providing initial parameters for the calculation of the marine transport and diffusion path of the radionuclide.

[0060] In an optional embodiment of the present application, the radionuclide source item processing module 102 is also used to analyze and process the marine environment where nuclear pollution is discharged, including analyzing hydrological element information, ecological element information, human activity impact element information, etc., and then obtaining the location of the marine nuclear contaminated sea area, the geographical coordinates of the nuclear pollution source, the emission method and other nuclear pollution source item information.

[0061] In actual application, the radioactive nuclide transport diffusion prediction module 104 and the nuclear particle transport diffusion prediction module 105 correspond to the calculation of the ocean transport diffusion paths of two different types of nuclides.

[0062] Specifically, in the case where the nuclide category of the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, the radionuclide transport and diffusion prediction module 104, after completing the parameter configuration performed by the nuclide source term processing module 102, first establishes a calculation scheme for the spatiotemporal variation of suspended matter concentration in the nuclear contaminated sea area based on the suspended matter state variables in the suspended matter information obtained by the marine environment information processing module 103, and obtains the adsorption and sedimentation driving information of the suspended matter on the nuclide; thereafter, the initial nuclear pollution information output by the radionuclide information collection and processing module 101, the nuclear pollution source term information output by the nuclide source term processing module 102, and the ocean hydrodynamic driving information and sea surface driving information output by the marine environment information processing module 103 are combined to calculate the marine transport and diffusion path of the radionuclides within the contaminated range.

[0063] In the case where the nuclide type of the nuclear contaminated sea area is nuclear particles that are not easily adsorbed on suspended matter, the nuclear particle transmission and diffusion prediction module 105, after completing the parameter configuration performed by the nuclide source item processing module 102, combines the initial nuclear contamination information output by the radioactive nuclide information collection and processing module 101, the nuclear pollution source item information output by the nuclide source item processing module 102, and the ocean hydrodynamic driving information and sea surface driving information output by the marine environment information processing module 103, to calculate the marine transport and diffusion path of the radioactive nuclides within the contaminated range.

[0064] Furthermore, the forecasting system for the ocean transport pathway of radionuclides may also be connected to the forecasting product production system 107 for the transport and diffusion pathway of radionuclides. The forecasting product production system 107 for the transport and diffusion pathway of radionuclides is used to conduct a comprehensive analysis of the ocean transport and diffusion pathways of radionuclides output by the forecasting system for the ocean transport pathway of radionuclides, obtain the ocean radionuclides transport and diffusion concentration information at key locations, conduct a risk analysis of the emission of ocean nuclides, conduct an impact assessment on the environment of nuclear-contaminated marine areas, and provide reasonable forecasting information in combination with relevant nuclear accident emergencies.

[0065] Furthermore, the present application also provides a method for predicting the ocean diffusion path of radionuclides, please refer to Figure 2 , Figure 2 A flow chart of a method for predicting the ocean transport and diffusion pathways of radionuclides provided in an embodiment of the present application.

[0066] like Figure 1 As shown, the method for predicting the ocean transport path of radionuclides includes the following S101 to S106:

[0067] S101, determining at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area, each of the marine environment information forecasting systems having a different spatial resolution, and the forecasting range of the marine environment information forecasting system at least includes the pollution range.

[0068] The contamination range of the nuclear contaminated sea area can be obtained by analyzing and processing the radionuclide information collected by the radionuclide information collection and processing module 101. Specifically, the analysis and processing of the radionuclide information includes locating the sea area where nuclear contamination occurs, and then determining the nuclear contaminated sea area and the contamination range of the nuclear contaminated sea area.

[0069] Specifically, the radionuclide information includes atmospheric radionuclide diffusion forecast data, radionuclide detection data, and historical nuclear pollution information.

[0070] Before determining the contamination scope of the nuclear contaminated sea area, it is first necessary to analyze and process the global or regional atmospheric radionuclide diffusion forecast data, radionuclide detection data, and historical nuclear pollution information, and obtain the nuclear pollution radiation intensity, nuclide transport and diffusion range, contaminated area and other contents through radionuclide data analysis, coordinate format conversion, pollution range matching and other methods, and then complete the analysis and processing of radionuclide information to realize dynamic information judgment and classification of nuclear contaminated sea areas.

[0071] In addition to determining the contamination scope of the nuclear contaminated sea area, the collection of the radioactive nuclide information is also used to construct initial nuclear contamination information within the contamination scope, so as to provide basic conditions for the diffusion of nuclides in the nuclear contaminated sea area.

[0072] Specifically, the construction of the initial nuclear pollution information includes: obtaining the radionuclide data of the contaminated range of the nuclear contaminated sea area; using the data fusion method, fusing the radionuclide data to the nuclear contamination background field corresponding to the contaminated range, and obtaining the initial nuclear pollution information of the nuclear contaminated sea area. The nuclear contamination background field can be understood as the normal concentration level and distribution of radionuclides in the nuclear contaminated sea area when the nuclear contaminated sea area is not contaminated by nuclear pollution.

[0073] S102, according to the spatial resolution and regional range of each of the marine environment information forecasting systems, determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecasting systems, and determine the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecasting system.

[0074] After determining the pollution scope of the nuclear contaminated sea area, determine the regional scope of the marine environment information forecast system associated with the marine transport and diffusion path of radioactive nuclides, further match multiple marine environment information forecast systems whose regional scope includes the pollution scope, and select the one with the highest spatial resolution from these marine environment information forecast systems as the target forecast system.

[0075] In addition, considering that the scope of pollution in nuclear contaminated sea areas will gradually expand with the passage of time, the selection of the marine environment information forecasting system will also change accordingly. In order to improve the forecast accuracy of the ocean transport diffusion path, the target forecasting system selection changes with the changes in the pollution scope. In the actual application process, considering that with the spread of radioactive nuclides, the pollution scope may expand to multiple sea areas, and the regional scope of the marine environment information forecasting system in different sea areas is limited, the target forecasting system may include at least one marine environment information forecasting system.

[0076] Considering that radionuclides also transport, diffuse and settle in the atmosphere, and that meteorological conditions (such as wind speed, wind direction, turbulence, etc.), atmospheric stability, climate conditions, atmospheric chemical reactions, etc. in the atmospheric environment have an important impact on the diffusion of nuclides in the ocean, for example, radionuclides in the atmosphere can attach to suspended particles in the atmosphere, and the larger of these suspended particles are easy to settle in the ocean. Therefore, in the process of analyzing the transport and diffusion of radionuclides in the ocean, the analysis of atmospheric environmental information is also essential.

[0077] Furthermore, the hydrodynamic element information and suspended matter information can be understood as the influencing factors of the atmosphere and ocean environment on the diffusion of the nuclides within the pollution range, and the atmospheric environment information is used to analyze the influence of the atmospheric environment on the diffusion of nuclides.

[0078] In actual application, the hydrodynamic element information corresponds to the sea surface drive of the nuclear contaminated sea area, that is, the hydrodynamic driving field; the suspended matter information corresponds to the adsorption and sedimentation drive of suspended matter in the ocean on radionuclides, that is, the diffusion caused by phytoplankton in the ocean; the atmospheric environment information corresponds to the atmospheric nuclear diffusion sedimentation field.

[0079] S103, constructing the ocean hydrodynamic driving information and sea surface driving information of the diffusion of nuclides in the nuclear contaminated sea area based on the hydrodynamic element information and the atmospheric environment information.

[0080] Specifically, based on the hydrodynamic element information and the atmospheric environment information, the ocean hydrodynamic driving information and the sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area are constructed, including:

[0081] Obtain the marine nuclide diffusion calculation grid corresponding to the nuclear contaminated sea area; interpolate the atmospheric environment information to the marine nuclide diffusion calculation grid through a bilinear interpolation method to obtain the sea surface driving information; interpolate the hydrodynamic element information to the marine nuclide diffusion calculation grid through a multivariate multiple surface interpolation method to obtain the marine hydrodynamic driving information.

[0082] In an optional embodiment of the present application, in order to predict the transport and diffusion path of radioactive nuclides, after obtaining the ocean hydrodynamic driving information, it is necessary to combine the relevant information of the ocean nuclide diffusion calculation grid (including grid longitude and latitude, grid connection rules, grid requirements, number of grid cells, sea and land identification information, etc.), load water depth data, shore boundary, sea and land identification data on the basis of the ocean nuclide diffusion calculation grid, and correct the grid cells that do not meet the calculation conditions and the grid cells that do not conform to the sea and land identification, actual water depth, and shore boundary by correcting the orthogonality.

[0083] While constructing the ocean hydrodynamic driving information and sea surface driving information in the ocean nuclide diffusion calculation grid, in order to ensure the accuracy of the prediction of the subsequent ocean transport diffusion path, it is also necessary to add the initial nuclear pollution information in S101 to the ocean nuclide diffusion calculation grid.

[0084] Specifically, for the initial information of nuclear pollution, the position tracking method can be used to find the grid number of the pollution emission source in the initial information of nuclear pollution in the marine nuclide diffusion calculation grid, and the type of radioactive material, emission amount, emission start time, and grid number of the pollution emission source in the initial information of nuclear pollution are added to the marine nuclide diffusion calculation grid together with the sea surface driven information and sedimentation driven information.

[0085] S104, when the nuclide category of the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, according to the radioactive nuclide information of the nuclear contaminated sea area, the parameters of the radioactive nuclide transport and diffusion prediction model are configured; based on the suspended matter state variables in the suspended matter information, a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclide; through the radioactive nuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the radioactive nuclides within the forecast time period is determined.

[0086] The nuclides easily adsorbed on the suspended matter include 137 Cs, 90Sr, etc. The ecological variables included in the suspended matter information include phytoplankton, chlorophyll (Chlorophyll, Chl-a), zooplankton (zooplankton), nitrate (NO3), ammonium salt (NH4), nitrogen-containing large and small debris (Large and small DetritusN), carbon-containing large and small debris (Large and small DetritusC), dissolved oxygen (Dissolved Oxygen, DO), alkalinity (TA), total inorganic carbon (Total Inorganic Carbon, TIC), etc. In the process of actual application, the suspended matter information can be obtained through the marine plankton ecological dynamics model in the marine environmental information forecasting system.

[0087] The circulation and sedimentation of the marine ecological environment have a crucial influence on the accuracy of the diffusion of radionuclides. Among them, the influence of phytoplankton on the diffusion of radionuclides comes from the absorption of radionuclides during its growth and its own sedimentation in the ocean. The growth of phytoplankton is affected by the intensity of shortwave radiation, NO3, NH4 concentrations and sea water temperature. Among them, NO3 comes from the nitrification of NH4 and the replenishment of nearshore rivers, NH4 comes from the metabolism of zooplankton and the remineralization process of large and small debris (that is, nitrogen regenerated by dead algae at a certain rate); the diffusion of zooplankton radionuclides comes from the ingestion of phytoplankton.

[0088] For nuclides that are easily adsorbed on suspended matter, the main analysis is the diffusion of the nuclides caused by the spatiotemporal changes of suspended matter in the polluted sea area and the state variables. In this process, the main analysis is the concentration of suspended matter within the pollution range, so as to analyze the diffusion of radioactive nuclides under the absorption and sedimentation of suspended matter in combination with the concentration.

[0089] Specifically, the sedimentation process of the suspended matter is related to the concentration of the suspended matter. The calculation scheme for the spatiotemporal variation of the concentration of suspended matter in the nuclear contaminated sea area can be calculated by the following formulas (1) to (5):

[0090]

[0091]

[0092] Where SDetC represents the concentration of small carbonaceous debris; LDetC represents the concentration of large carbonaceous debris; r P represents the ratio of carbon to nitrogen in phytoplankton; r z represents the ratio of carbon to nitrogen in zooplankton; Zoo represents the amount of zooplankton in seawater; Phy represents the amount of phytoplankton in seawater; β is the predation assimilation absorption coefficient of zooplankton on phytoplankton; mz Represents the mortality rate of zooplankton; m P represents the mortality rate of phytoplankton; τ represents the aggregation rate of phytoplankton; g max represents the maximum predation rate of zooplankton, k p represents the half-saturation constant of zooplankton predation; r SDC represents the mineralization rate of small debris carbon; r LDC represents the mineralization rate of carbon in large debris; SDetN represents the concentration of nitrogen-containing small debris; LDetN represents the concentration of nitrogen-containing large debris; r SD represents the remineralization rate of small debris; r LD Represents the remineralization rate of large debris; ω s Indicates the sedimentation rate of small debris; ω L is the settling rate of large debris.

[0093] After obtaining the concentrations of the two types of debris corresponding to each time step through the above formulas (1) to (4), the total concentration of suspended matter in the ocean at each time step can be determined, that is:

[0094] ρ s =SDetC+LDetC+SDetN+LDetN (5);

[0095] Among them, ρ s Indicates the total concentration of the suspended matter.

[0096] The nuclear pollution source information refers to information related to the source of marine nuclear pollution. In the process of actual application, the marine environment where the nuclear pollution is discharged can be analyzed and processed, including analysis of hydrological element information, ecological element information, human activity impact element information, etc., to obtain the location of the marine nuclear pollution sea area, the geographical coordinates of the nuclear pollution source, the emission method and other nuclear pollution source information, so as to provide parameter configuration for the radioactive nuclide transport and diffusion prediction model and the nuclear particle transport and diffusion prediction model in the following S105.

[0097] After obtaining the marine nuclide diffusion calculation grid containing ocean hydrodynamic driving information, sea surface driving information, initial nuclear pollution information and nuclear pollution source information, as well as the adsorption and sedimentation driving information, the positions of radionuclides at different time points within the forecast time period are determined through the radionuclide transport diffusion prediction model, and then the marine transport diffusion path of radionuclides is obtained.

[0098] Specifically, in the above S104, the radionuclide transport and diffusion prediction model is specifically an Euler transport and diffusion model.

[0099] In practical application, the model calculates the ocean transport and diffusion path of the radioactive nuclides through the following formula (6).

[0100]

[0101] in, x, y and z represent the traditional Cartesian coordinates; u, v and w represent the latitudinal velocity, longitudinal velocity and vertical velocity respectively; C represents the concentration of radionuclides; t represents time; K h and K M They represent the horizontal diffusion coefficient and the vertical diffusion coefficient respectively; λ represents the radioactive decay constant; source represents the amount of the source discharged to a unit volume of seawater per unit time; sinking represents the adsorption and sedimentation of radionuclides along with the concentration of suspended matter; K d Indicates the distribution coefficient of nuclides in water to suspended matter, K d Represents the ability of particulate matter to remove radionuclides, K d The lower the value, the less likely the radionuclide is to be adsorbed on particles, and the stronger its migration and diffusion ability is. s Indicates the sedimentation velocity of suspended matter; ρ s Indicates the total concentration of the suspended matter.

[0102] Furthermore, after obtaining the calculation results of each time step through the above formula (6), the parameters such as the average field, instantaneous field, single-point time series concentration, etc. that need to be output are set, and the forecast results for the ocean transport and diffusion path of the radioactive nuclide can be obtained. According to the longitude and latitude of the given section, based on the interpolation function, the temporal and spatial variation data of the radioactive nuclides on the section with longitude, latitude and water depth are calculated, which are used to analyze and visualize the spatial distribution of the radioactive nuclide concentration in the vertical section layer.

[0103] S105, when the nuclide type of the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter, the parameters of the nuclear particle transport and diffusion prediction model are configured according to the radioactive nuclide information of the nuclear contaminated sea area; through the nuclear particle transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the nuclear particles in the forecast time period is determined.

[0104] For nuclides that are not easily adsorbed on suspended matter (e.g. tritium), the random walk particle method is selected to simulate the spatiotemporal behavior of radioactive nuclides in the marine environment, thereby achieving rapid simulation calculations after the release of nuclear particles in seawater.

[0105] Specifically, the method of determining the ocean transport and diffusion path of radioactive nuclides within the forecast period by using the nuclear particle transport and diffusion forecast model, in combination with the sea surface driving information and the initial nuclear pollution information of the nuclear contaminated sea area, includes:

[0106] The nuclear particle transport and diffusion prediction model is used to simulate the spatiotemporal behavior of radioactive nuclides in the marine environment by adopting the random walk particle method, combining the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, and determine the ocean transport and diffusion path of radioactive nuclides within the forecast time period.

[0107] Specifically, after generating a corresponding hydrodynamic grid based on the sea surface drive information and the initial information of nuclear pollution in the nuclear contaminated sea area, the position of each nuclear particle in the pollution range is determined, and then the relevant data in the hydrodynamic grid is interpolated to the position of the nuclear particle, so as to predict the position of the nuclear particle in the next time step and update the current position of the nuclear particle.

[0108] In this way, by calculating the position of each nuclear particle at each time step within the forecast time period, the diffusion path of the nuclear particle can be obtained.

[0109] Specifically, in the above step S105, the radionuclide ocean diffusion model is specifically a Lagrangian transport diffusion model, and the position change of each nuclear particle can be obtained by the following formulas (6) and (7):

[0110]

[0111] Among them, x, y, z represent the coordinates of the nuclear particles, u, v, w represent the latitudinal velocity, longitudinal velocity and vertical velocity of the nuclear particles respectively; σ=(z-η) / D, D=H+ζ, H is the bottom topography of the nuclear contaminated area, ζ represents the surface elevation.

[0112] After obtaining the diffusion path of each nuclear particle, the position of the nuclear particles at each time step can be obtained, the position of the boundary nuclear particles can be found and the number of nuclear particles can be counted, and the sea area corresponding to the boundary nuclear particles at each time step can be calculated to determine the changes in the pollution range at each time step.

[0113] Finally, the longitude and latitude of each nuclear particle in each time step are queried, the number of nuclear particles in each grid cell in the grid of the nuclear contaminated area is counted, and the relative concentration in the seawater and on the sea surface at each time step is obtained.

[0114] In the embodiment of the present application, the above-mentioned S104 and S105 configure the parameters of the radionuclide transport and diffusion prediction model according to the radionuclide information of the nuclear contaminated sea area; and configure the parameters of the nuclear particle transport and diffusion prediction model according to the radionuclide information of the nuclear contaminated sea area, which means analyzing the nuclide source terms and nuclear particle source terms of the contaminated sea area in combination with the radionuclide information, and then performing initial parameter configuration of the radionuclide transport and diffusion prediction model and the nuclear particle transport and diffusion prediction model according to the nuclide source terms and the nuclear particle source terms, respectively.

[0115] Specifically, the configuration parameters of the radionuclide ocean diffusion model include: the location of the nuclear pollution source, the forecast time period of the nuclide diffusion, the amount of pollutants emitted by the nuclear pollution source, and the situation information of the nuclear pollution source at any time.

[0116] For the radionuclide transport and diffusion prediction model mentioned in S104 above, after obtaining the marine radionuclide information, the attenuation parameters of the radionuclide, the amount of pollutants emitted by the nuclear pollution source, the location of the nuclear pollution source, the depth of pollutants emitted by the nuclear pollution source, and the emission time information are extracted, and unit conversion and element standardization are performed. Then, based on the relevant information obtained after processing, the relevant parameters such as the number of nuclear particles, position and time of the Euler transport model are configured.

[0117] For the nuclear particle transport and diffusion prediction model mentioned in S105 above, after obtaining the marine radioactive nuclide information, the marine radioactive nuclide information is analyzed and processed (including hydrological element information analysis, ecological element information analysis, human activity impact analysis, etc.) to extract the pollution scope of the marine nuclear contaminated sea area, the location of the nuclear pollution source and the emission method of the pollution source, and the parameters of the Lagrangian transport and diffusion model are coordinated according to the above-mentioned extracted content.

[0118] S106, updating the contamination range according to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles, and returning to execute S101.

[0119] Furthermore, after obtaining the ocean transport and diffusion path of radionuclides within the forecast time period, the forecast product can be generated in combination with the ocean transport and diffusion path of radionuclides within the forecast time period.

[0120] Specifically, the forecast products include: key point information diagnosis, nuclear contamination area, nuclear particle diffusion path forecast, and radioactive nuclide impact assessment.

[0121] The key point diagnosis includes: selecting the geographical location of the key point based on the geographic information system; diagnosing the key point information according to the marine transport and diffusion path of the radioactive nuclides, setting fixed time and time interval, extracting the forecast data of the radioactive nuclide concentration of the key point, selecting a suitable output image scheme, comparing the standard concentration of the marine radioactive nuclide type to determine whether the nuclide concentration of the key point exceeds the standard, and outputting the exceeding data information.

[0122] For the nuclear contaminated area, it includes: according to the impact concentration threshold of marine radioactive nuclides, comparing the nuclide concentration in each grid unit obtained in the process of calculating the marine transport and diffusion path of radioactive nuclides with the impact threshold, judging whether the nuclide concentration of each grid unit is greater than the impact threshold, generating spatial field data for logical judgment, counting the area of ​​grid units with concentration greater than the impact threshold, and outputting the number and number of grids counted, performing sum calculation, and recording the impact area of ​​nuclear contamination diffusion at that moment.

[0123] The prediction of nuclear particle diffusion path includes: calculating the position of nuclear particles at different times during the calculation of the ocean transport diffusion path of radioactive nuclides and the concentration of nuclear particles in each grid unit, calculating the maximum position of the radioactive nuclide concentration, selecting a drawing scheme, drawing and describing the nuclear particle diffusion path, and outputting nuclear particle diffusion path forecast map data, forecast sheets and other products.

[0124] The impact assessment of radionuclides includes: analyzing the transport distance, direction, path, trend of changes in the affected area, time of entry into different sea areas, etc. of radionuclides. The output includes time series change graphs of the affected area, tables, data files, forecast sheets and other product forms, which can be displayed visually to comprehensively give the results of the impact assessment of marine radionuclides.

[0125] In summary, the method for predicting the marine transport and diffusion path of radionuclides provided in the embodiment of the present application updates the nuclear contaminated area in combination with the update of the diffusion path of marine radionuclides, and determines the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecast system according to the pollution range of the nuclear contaminated sea area, and selects the corresponding hydrodynamic element information and suspended matter information from multiple marine environment information forecast systems corresponding to the pollution range in combination with the spatial resolution and regional range of each marine environment information forecast system, thereby establishing the optimal marine hydrodynamic driving information and sea surface driving information; at the same time, the method for predicting the marine transport and diffusion path of radionuclides selects the corresponding model to analyze the marine transport and diffusion path of radionuclides based on the category of radionuclides, which is conducive to improving the diversity and flexibility of the analysis of the marine transport and diffusion path of radionuclides, and for nuclides that are easily adsorbed on suspended matter, while analyzing the diffusion path according to the marine hydrodynamic driving information and the sea surface driving information, combined with the adsorption and sedimentation driving information of suspended matter on nuclides, it is conducive to improving the accuracy of the analysis of the marine transport and diffusion path of radionuclides.

[0126] Corresponding to the above method embodiment, the present application embodiment also provides a prediction device for the ocean transport and diffusion path of radioactive nuclides, please refer to Figure 3 , Figure 3 A structural diagram of a device for predicting the oceanic transport and diffusion paths of radionuclides is provided for the implementation of this application.

[0127] like Figure 3 As shown, the forecasting device for the ocean transport and diffusion path of radionuclides comprises:

[0128] The sea area information processing module 301 is used to determine at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area, each of the marine environment information forecasting systems has a different spatial resolution, and the forecast range of the marine environment information forecasting system at least includes the pollution range;

[0129] The environmental information extraction module 302 is used to determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environmental information forecast systems according to the spatial resolution and regional range of each of the marine environmental information forecast systems, and to determine the atmospheric environmental information of the nuclear contaminated sea area within the forecast time period from the atmospheric environmental information forecast system;

[0130] The driving field construction module 303 is used to construct the ocean hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area based on the hydrodynamic element information and the atmospheric environment information;

[0131] The first diffusion path determination module 304 is used to establish a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area based on the suspended matter state variables in the suspended matter information, and obtain the adsorption and sedimentation driving information of the suspended matter on the nuclides, if the nuclide category in the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter; determine the marine transport and diffusion path of the radioactive nuclides within the forecast time period through the radioactive nuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the nuclear pollution initial information and nuclear pollution source item information of the nuclear contaminated sea area;

[0132] The second diffusion path determination module 305 is used to determine the ocean transport diffusion path of nuclear particles in the forecast time period by combining the ocean hydrodynamic driving information, sea surface driving information, and the nuclear pollution initial information and nuclear pollution source item information of the nuclear contaminated sea area through the nuclear particle transmission and diffusion prediction model when the nuclide type of the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter;

[0133] The sea area information updating module 306 is used to update the pollution range according to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles, and return to execute the step of determining at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area.

[0134] In an optional implementation manner of the present application, the determining of the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecast systems according to the spatial resolution and regional range of each of the marine environment information forecast systems includes:

[0135] From among the marine environment information forecasting systems, determining the marine environment information forecasting system with the highest resolution as the target forecasting system;

[0136] In the target forecasting system, the hydrodynamic element information and suspended matter information corresponding to the pollution range are determined.

[0137] In an optional implementation manner of the present application, the construction of the ocean hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area based on the hydrodynamic element information and the atmospheric environment information includes:

[0138] Obtaining a marine radionuclide diffusion calculation grid corresponding to the nuclear contaminated sea area;

[0139] The atmospheric environment information is interpolated to the ocean nuclide diffusion calculation grid by a bilinear interpolation method to obtain the sea surface driving information;

[0140] The hydrodynamic element information is interpolated to the marine nuclide diffusion calculation grid through a multivariate multiple surface interpolation method to obtain the marine hydrodynamic driving information.

[0141] In an optional implementation manner of the present application, the radionuclide information at least includes: the pollution scope of the nuclear contaminated sea area and the emission information of the nuclear pollution source;

[0142] According to the radionuclide information of the nuclear contaminated sea area, the parameters of the radionuclide transport and diffusion prediction model are configured, and according to the radionuclide information of the nuclear contaminated sea area, the parameters of the nuclear particle transport and diffusion prediction model are configured, including:

[0143] According to the pollution scope of the nuclear contaminated sea area, the emission information of the nuclear pollution source and the forecast time period, the parameters of the radioactive nuclide transport diffusion forecast model and the nuclear particle transport diffusion forecast model are configured.

[0144] In an optional implementation manner of the present application, the suspended matter information at least includes state variable information of phytoplankton, zooplankton, large debris, and small debris;

[0145] The method of establishing a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area based on the suspended matter state variables in the suspended matter information, and obtaining the adsorption and sedimentation driving information of the suspended matter on the nuclide, includes:

[0146] According to the suspended matter information, a state variable analysis is performed on the suspended matter in the nuclear contaminated sea area to obtain the type and amount of the suspended matter in the nuclear contaminated sea area and generation parameters of the suspended matter;

[0147] Based on the amount of the suspended matter, the generation parameters and the type of the suspended matter, a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclides.

[0148] In an optional embodiment of the present application, the device is also used for:

[0149] Obtaining radionuclide data of the contaminated area of ​​the nuclear contaminated sea area;

[0150] The radioactive nuclide data are fused to the nuclear pollution background field corresponding to the pollution range by using a data fusion method to obtain the initial nuclear pollution information of the nuclear polluted sea area.

[0151] In an optional embodiment of the present application, the radionuclide transport and diffusion prediction model is used to determine the ocean transport and diffusion path of radionuclides within the forecast time period in combination with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, including:

[0152] The radionuclide transport and diffusion prediction model is used to determine the ocean transport and diffusion path of the radionuclide within the forecast time period by using a three-dimensional Euler algorithm based on the initial nuclear pollution information and nuclear pollution source information, combined with the ocean hydrodynamic driving information, sea surface driving information and adsorption sedimentation driving information;

[0153] The method of determining the ocean transport and diffusion path of nuclear particles in the forecast period by using the nuclear particle transport and diffusion forecast model, combining the ocean hydrodynamic driving information, the sea surface driving information, and the initial nuclear pollution information and nuclear pollution source information of the nuclear contaminated sea area, comprises:

[0154] The nuclear particle transport and diffusion prediction model is used to simulate the spatiotemporal behavior of radioactive nuclides in the marine environment by adopting the random walk particle method, combining the ocean hydrodynamic driving information, the sea surface driving information, the initial nuclear pollution information and the nuclear pollution source term information, and determine the ocean transport and diffusion path of radioactive nuclides within the forecast time period.

[0155] The above-mentioned device embodiment provided in this embodiment belongs to the same application concept as the method embodiment of this application, and can execute the prediction method of the ocean transport and diffusion path of radionuclides provided in any of the above-mentioned embodiments of this application, and has the corresponding functional modules and beneficial effects of executing the prediction method of the ocean transport and diffusion path of radionuclides. For the technical details not fully described in this embodiment, please refer to the specific processing content of the prediction method of the ocean transport and diffusion path of radionuclides provided in the above-mentioned embodiments of this application, which will not be repeated here.

[0156] It should be understood that the units in the above devices can be implemented in the form of a processor calling software. For example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or realize the functions of each unit of the device, wherein the processor can be a general-purpose processor, such as a CPU or a microprocessor, etc., and the memory can be a memory in the device or a memory outside the device. Alternatively, the units in the device can be implemented in the form of hardware circuits, and the functions of some or all units can be realized by designing the hardware circuits. The hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an ASIC, and the functions of some or all of the above units are realized by designing the logical relationship of the components in the circuit; for another example, in another implementation, the hardware circuit can be implemented by PLD, taking FPGA as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by the configuration file, so as to realize the functions of some or all of the above units. All units of the above devices can be implemented in the form of a processor calling software, or in the form of hardware circuits, or in part by a processor calling software, and the remaining part is implemented in the form of hardware circuits.

[0157] In an embodiment of the present application, a processor is a circuit with the ability to process signals. In one implementation, the processor may be a circuit with the ability to read and run instructions, such as a CPU, a microprocessor, a GPU, or a DSP; in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by an ASIC or PLD, such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as an NPU, TPU, DPU, etc.

[0158] It can be seen that each unit in the above device can be one or more processors (or processing circuits) configured to implement the above method, such as: CPU, GPU, NPU, TPU, DPU, microprocessor, DSP, ASIC, FPGA, or a combination of at least two of these processor forms.

[0159] In addition, all or part of the units in the above device can be integrated together, or can be implemented independently. In one implementation, these units are integrated together and implemented in the form of a SOC. The SOC may include at least one processor for implementing any of the above methods or implementing the functions of each unit of the device. The type of the at least one processor may be different, for example, including a CPU and an FPGA, a CPU and an artificial intelligence processor, a CPU and a GPU, etc.

[0160] The present application also provides an electronic device, such as Figure 4 As shown, Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0161] like Figure 4 As shown, the electronic device comprises:

[0162] Processor 210;

[0163] A memory 200 for storing instructions executable by the processor 210;

[0164] The processor 210 is used to execute the method for predicting the ocean transport and diffusion path of radionuclides disclosed in any of the above embodiments by running the instructions in the memory 200.

[0165] The processor 210, the memory 200, the communication interface 220, the input device 230 and the output device 240 are connected to each other via a bus.

[0166] A bus may include a pathway that transfers information between components of a computer system.

[0167] The processor 210 may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the scheme of the present invention. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0168] The processor 210 may include a main processor, and may also include a baseband chip, a modem, and the like.

[0169] The memory 200 stores a program for executing the technical solution of the present invention, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes a computer operation instruction. More specifically, the memory 200 may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0170] The input device 230 may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a touch screen, etc.

[0171] Output device 240 may include devices that allow information to be output to a user, such as a display screen, printer, speaker, etc.

[0172] The communication interface 220 may include any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0173] The processor 210 executes the program stored in the memory 200 and calls other devices, and can be used to implement each step of the method for predicting the marine transport and diffusion path of radionuclides provided in any of the above embodiments of the present application.

[0174] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps in the method for predicting the marine transport and diffusion path of radioactive nuclides in various embodiments of the present application.

[0175] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0176] In addition, an embodiment of the present application may also be a storage medium on which a computer program is stored, and the computer program is executed by a processor to execute the steps in the method for predicting the marine transport and diffusion path of radioactive nuclides in various embodiments of the present application.

[0177] For the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the order of the actions described, because according to the present application, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0178] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0179] The steps in the methods of each embodiment of the present application can be adjusted in order, combined and deleted according to actual needs, and the technical features recorded in each embodiment can be replaced or combined.

[0180] The modules and sub-modules in the devices and terminals in the various embodiments of the present application can be combined, divided and deleted according to actual needs.

[0181] In the several embodiments provided in the present application, it should be understood that the disclosed terminals, devices and methods can be implemented in other ways. For example, the terminal embodiments described above are only schematic, for example, the division of modules or submodules is only a logical function division, and there may be other division methods in actual implementation, for example, multiple submodules or modules can be combined or integrated into another module, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0182] The modules or submodules described as separate components may or may not be physically separated, and the components of the modules or submodules may or may not be physical modules or submodules, that is, they may be located in one place, or they may be distributed on multiple network modules or submodules. Some or all of the modules or submodules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0183] In addition, each functional module or submodule in each embodiment of the present application may be integrated into one processing module, or each module or submodule may exist physically separately, or two or more modules or submodules may be integrated into one module. The above-mentioned integrated modules or submodules may be implemented in the form of hardware or in the form of software functional modules or submodules.

[0184] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0185] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly by hardware, software units executed by a processor, or a combination of the two. The software units may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0186] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0187] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for predicting the oceanic transport and diffusion path of radionuclides, characterized in that: include: Determine at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area, each of the marine environment information forecasting systems has a different spatial resolution, and the forecast range of the marine environment information forecasting system at least includes the pollution range; According to the spatial resolution and regional range of each of the marine environment information forecasting systems, determine the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecasting systems, and determine the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecasting system; Based on the hydrodynamic element information and the atmospheric environment information, construct the ocean hydrodynamic driving information and the sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area; In the case where the nuclide category of the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, the parameters of the radionuclide transport and diffusion prediction model are configured according to the radionuclide information of the nuclear contaminated sea area; based on the suspended matter state variables in the suspended matter information, a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclide; through the radionuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the radionuclide within the forecast time period is determined; In the case where the nuclide type of the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter, the parameters of the nuclear particle transport and diffusion prediction model are configured according to the radioactive nuclide information of the nuclear contaminated sea area; through the nuclear particle transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area, the ocean transport and diffusion path of the nuclear particles in the forecast time period is determined; According to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles, the pollution range is updated, and the step of determining at least one marine environment information forecasting system corresponding to the pollution range of the nuclear contaminated sea area is returned to execute.

2. The method according to claim 1, characterized in that Determining the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecast systems according to the spatial resolution and regional range of each of the marine environment information forecast systems includes: From among the marine environment information forecasting systems, determining the marine environment information forecasting system with the highest resolution as the target forecasting system; In the target forecasting system, the hydrodynamic element information and suspended matter information corresponding to the pollution range are determined.

3. The method according to claim 1, characterized in that The method of constructing the ocean hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area based on the hydrodynamic element information and the atmospheric environment information includes: Obtaining a marine radionuclide diffusion calculation grid corresponding to the nuclear contaminated sea area; The atmospheric environment information is interpolated to the ocean nuclide diffusion calculation grid by a bilinear interpolation method to obtain the sea surface driving information; The hydrodynamic element information is interpolated to the marine nuclide diffusion calculation grid through a multivariate multiple surface interpolation method to obtain the marine hydrodynamic driving information.

4. The method according to claim 1, characterized in that: The radionuclide information at least includes: the pollution scope of the nuclear contaminated sea area and the emission information of the nuclear pollution source; The step of configuring parameters of a radionuclide transport and diffusion prediction model according to the radionuclide information of the nuclear contaminated sea area, and the step of configuring parameters of a nuclear particle transport and diffusion prediction model according to the radionuclide information of the nuclear contaminated sea area, includes: According to the pollution scope of the nuclear contaminated sea area, the emission information of the nuclear pollution source and the forecast time period, the parameters of the radioactive nuclide transport diffusion forecast model and the nuclear particle transport diffusion forecast model are configured.

5. The method according to claim 1, characterized in that The suspended matter information at least includes state variable information of phytoplankton, zooplankton, large debris, and small debris; The method of establishing a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area based on the suspended matter state variables in the suspended matter information, and obtaining the adsorption and sedimentation driving information of the suspended matter on the nuclide, includes: According to the suspended matter information, a state variable analysis is performed on the suspended matter in the nuclear contaminated sea area to obtain the type and amount of the suspended matter in the nuclear contaminated sea area and generation parameters of the suspended matter; Based on the amount of the suspended matter, the generation parameters and the type of the suspended matter, a calculation scheme for the spatiotemporal variation of the suspended matter concentration in the nuclear contaminated sea area is established to obtain the adsorption and sedimentation driving information of the suspended matter on the nuclides.

6. The method according to claim 1, characterized in that Also includes: Obtaining radionuclide data of the contaminated area of ​​the nuclear contaminated sea area; The radioactive nuclide data are fused to the nuclear pollution background field corresponding to the pollution range by using a data fusion method to obtain the initial nuclear pollution information of the nuclear polluted sea area.

7. The method according to any one of claims 1 to 6, characterized in that: The method of determining the ocean transport and diffusion path of radionuclides within the forecast period by using the radionuclide transport and diffusion forecast model, in combination with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the initial nuclear pollution information and nuclear pollution source information of the nuclear contaminated sea area, includes: The radionuclide transport and diffusion prediction model is used to determine the ocean transport and diffusion path of the radionuclide within the forecast time period by using a three-dimensional Euler algorithm based on the initial nuclear pollution information and nuclear pollution source information, combined with the ocean hydrodynamic driving information, sea surface driving information and adsorption sedimentation driving information; The method of determining the ocean transport and diffusion path of nuclear particles in the forecast period by using the nuclear particle transport and diffusion forecast model, combining the ocean hydrodynamic driving information, the sea surface driving information, and the initial nuclear pollution information and nuclear pollution source information of the nuclear contaminated sea area, comprises: The nuclear particle transport and diffusion prediction model is used to simulate the spatiotemporal behavior of radioactive nuclides in the marine environment by adopting the random walk particle method, combining the ocean hydrodynamic driving information, the sea surface driving information, the initial nuclear pollution information and the nuclear pollution source term information, and determine the ocean transport and diffusion path of radioactive nuclides within the forecast time period.

8. A forecasting system for the ocean transport and diffusion path of radionuclides, characterized in that: include: A radionuclide information collection and processing module, used to collect radionuclide information of nuclear contaminated sea areas, and determine at least one marine environment forecasting system corresponding to the pollution range of the nuclear contaminated sea areas; each of the marine environment information forecasting systems has a different spatial resolution, and the forecast range of the marine environment information forecasting system at least includes the pollution range; A marine environment information processing module, for determining the hydrodynamic element information and suspended matter information corresponding to the forecast time period from each of the marine environment information forecast systems according to the spatial resolution and regional range of each of the marine environment information forecast systems, and determining the atmospheric environment information of the nuclear contaminated sea area within the forecast time period from the atmospheric environment information forecast system; And, based on the hydrodynamic element information and the atmospheric environment information, construct the ocean hydrodynamic driving information and sea surface driving information of the nuclide diffusion in the nuclear contaminated sea area; The nuclide source item processing module is used to analyze the nuclide category of the radioactive nuclide information in the nuclear contaminated sea area and determine the category of the nuclide; and configure the parameters of the radioactive nuclide transport and diffusion prediction model and the nuclear particle transport and diffusion prediction model according to the radioactive nuclide information in the nuclear contaminated sea area; The first diffusion path determination module is used to establish a calculation scheme for the spatiotemporal variation of suspended matter concentration in the nuclear contaminated sea area based on the suspended matter state variables in the suspended matter information, when the nuclide category in the nuclear contaminated sea area is a nuclide that is easily adsorbed on suspended matter, and obtain the adsorption and sedimentation driving information of the suspended matter on the nuclide; determine the ocean transport and diffusion path of the radioactive nuclides within the forecast time period through the radioactive nuclide transport and diffusion prediction model, combined with the ocean hydrodynamic driving information, the sea surface driving information, the adsorption and sedimentation driving information, and the nuclear pollution initial information and nuclear pollution source item information of the nuclear contaminated sea area; The second diffusion path determination module is used to determine the ocean transport diffusion path of nuclear particles in the forecast time period by combining the ocean hydrodynamic driving information, sea surface driving information, and the initial nuclear pollution information and nuclear pollution source item information of the nuclear contaminated sea area through the nuclear particle transmission and diffusion prediction model when the nuclide type of the nuclear contaminated sea area is a nuclide that is not easily adsorbed on suspended matter; The pollution range updating module is used to update the pollution range according to the ocean transport and diffusion path of the radioactive nuclides and / or nuclear particles.

9. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is used to execute the method for predicting the marine transport and diffusion path of radionuclides as described in any one of claims 1 to 7 by running the instructions in the memory.

10. A computer storage medium, characterized in that: The computer storage medium stores instructions, and when the instructions are executed, the method for predicting the marine transport and diffusion path of radioactive nuclides as described in any one of claims 1 to 7 is implemented.

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