Simulation method of permafrost thickness in seasonally frozen regions based on distributed hydrological model
A technology of distributed hydrology and simulation method is applied in the field of frozen soil layer thickness simulation in seasonal frozen soil area, which can solve the problems of low applicability and simulation accuracy, and achieve the effect of improving applicability and simulation accuracy.
Active Publication Date: 2021-10-22
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In view of the above-mentioned deficiencies in the prior art, the method for simulating the thickness of the frozen soil layer in the seasonally frozen soil region oriented to the distributed hydrological model provided by the present invention solves the problem of the application of the existing distributed hydrological model in the seasonally frozen soil region with a cold climate. The problem of low performance and simulation accuracy
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0051] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0052] In the embodiment of the present invention, the freezing and thawing of permafrost are directly affected by the soil temperature, and the soil temperature is related to air temperature, surface cover, soil moisture content, etc., therefore, as figure 1 As shown, the method for simulating the thickness of the frozen soil layer in the seasonally frozen soil region facing the distributed hydrological model in the present...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for simulating the thickness of a frozen soil layer in a seasonally frozen soil area oriented to a distributed hydrological model. , Based on the relationship between the soil temperature and its influencing factors, the relationship between the thickness of the frozen soil layer and the soil temperature is established, and then the thickness of the frozen soil layer in the seasonal frozen soil area is simulated. The method of the invention improves the applicability of the distributed hydrological model in the seasonal frozen soil area with cold climate by first establishing the relationship between the soil temperature and the relevant influencing factors, and then establishing the relationship between the frozen soil thickness and the soil temperature. At the same time, the parameter variables in the model are calibrated by using the thickness monitoring data in the frozen soil area to further improve the simulation accuracy.
Description
technical field [0001] The invention relates to the technical field of seasonal frozen soil, in particular to a distributed hydrological model-oriented method for simulating the thickness of frozen soil layers in seasonal frozen soil regions. Background technique [0002] When the distributed hydrological model is used to simulate the hydrological cycle in seasonally frozen regions, it is often faced with the impact of soil freeze-thaw. Compared with warm regions, the proportion of snowfall in cold regions is higher, the soil freezes for a longer time, and the temperature rises Due to the existence of permafrost, snowmelt water cannot infiltrate to replenish groundwater in time, and a soil layer with high moisture content is formed above the permafrost area, and even a saturated soil layer is formed, resulting in a large-scale spring flood. If the hydrological model cannot describe the freeze-thaw process of the permafrost layer well, it will affect the simulation accuracy o...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/08
CPCG06F30/20G06F2119/08
Inventor 孙青言陆垂裕郭辉严聆嘉何鑫秦韬吴初
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES