High-resolution aquifer water storage coefficient inversion method and system based on gravity satellite

A technology of satellite data and gravity, applied in probabilistic CAD, image data processing, structured data retrieval, etc., can solve problems such as difficult large-scale applications, time-consuming and labor-intensive, and achieve the effect of time-consuming and labor-intensive solutions

Active Publication Date: 2020-10-09
CAPITAL NORMAL UNIVERSITY
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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to use the relationship between groundwater storage changes and groun...

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  • High-resolution aquifer water storage coefficient inversion method and system based on gravity satellite
  • High-resolution aquifer water storage coefficient inversion method and system based on gravity satellite
  • High-resolution aquifer water storage coefficient inversion method and system based on gravity satellite

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Embodiment 1

[0052] In a specific embodiment, the method proposed by the present invention can adopt such as figure 1 The process shown to achieve; as figure 1 As shown, in a specific embodiment, the high-resolution aquifer water storage coefficient retrieval method based on gravity satellites may include:

[0053] Step S1: Obtain GRACE / GRACE-FO gravity satellite data, soil water content data, surface water storage data and other non-groundwater component data with grid size and grid range consistent according to the boundary and latitude and longitude information of the preset area;

[0054] In this embodiment, the GRACE / GRACE-FO gravity satellite data is the CSRRL05 Level-February gravity field spherical harmonic data released by the GRACE Scientific Data System (SDS), and the soil water data adopts the Global Land Surface Data Assimilation System (GLDAS ) The monthly soil moisture data set of the common land surface model (CommonLandModel, CLM), the surface water data adopts the "China...

Embodiment 2

[0102] In addition to the implementation in Embodiment 1, the technical solution of the present invention can also be realized by a high-resolution aquifer water storage coefficient inversion system based on gravity satellites. In a preferred embodiment, the system includes:

[0103] The basic data acquisition module is used to acquire gravity satellite data, soil water content data, surface water storage data and other non-groundwater component data based on the preset area;

[0104] The monthly time series module is used to obtain the monthly time series of land water storage changes based on the inversion of the gravity satellite data by performing truncation processing and filtering processing on the gravity satellite data; and the soil water content data, surface water Reserve data and other non-groundwater component data are forward modeled to simulate signal leakage, and the monthly time series of soil water content, surface water storage and other non-groundwater compo...

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Abstract

The invention provides a high-resolution aquifer water storage coefficient inversion method and system based on a gravity satellite. The method comprises the steps of acquiring gravity satellite data,soil water content data, surface water reserve data and non-groundwater component data based on a preset area; acquiring a land water reserve change month time sequence, a soil water content month time sequence, a surface water reserve month time sequence, a non-underground water component change month time sequence, an underground water reserve change month time sequence and underground water level change month time sequences of different aquifers based on gravity satellite data inversion; obtaining a random sample value of the water storage coefficient through random simulation; and obtaining a correlation coefficient and a Nash efficiency coefficient between the groundwater reserve change trend random value and the groundwater reserve change trend in the gravity satellite time-varyingsignal, and obtaining an inversion result. According to the method, the regional water storage coefficient can be rapidly calculated in a large range, and the problems that a traditional method wastestime and labor and cannot calculate the large-scale range are solved.

Description

technical field [0001] The invention relates to the fields of water resources management and hydrogeology, especially the calculation and evaluation of groundwater resources and hydrogeological calculation research, and in particular to a high-resolution aquifer water storage coefficient inversion method and system based on gravity satellites. Background technique [0002] The water storage coefficient is divided into the water supply degree and the elastic water release coefficient, both of which are physical quantities that characterize the water supply capacity of the aquifer, and are very important hydrogeological parameters in the evaluation of groundwater resources, dynamic forecasting, sustainable utilization of groundwater, and hydrogeological calculations. Water supply refers to the volume of gravitational water that can be released per unit volume of aquifer when the water level of the aquifer drops by one unit under the action of gravity; the elastic water release ...

Claims

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Application Information

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IPC IPC(8): G06F16/215G06F16/2458G06F16/29
CPCG06F16/215G06F16/2462G06F16/2474G06F16/29G06F2111/08G06F30/20G06T17/05
Inventor 潘云马亚林宫辉力
Owner CAPITAL NORMAL UNIVERSITY
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