Method for dynamically monitoring groundwater reserves based on gravity satellite data

• Main Authors: DUAN LI, WANG WEISHENG, HU ZENGYUN, LIU TIE, CHEN XI, MA XUEXI
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; DETECTING MASSES OR OBJECTS; ELECTRIC DIGITAL DATA PROCESSING; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; GYROSCOPIC INSTRUMENTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; SURVEYING; TESTING

The invention provides a method for dynamically monitoring groundwater reserves based on gravity satellite data. The method comprises the steps that Xinjiang GRACE gravity satellite data and GLDAS hydrological model output data are collected; calculating groundwater reserves based on the acquired data and a water balance equation; performing space-time analysis based on the calculated groundwater reserve abnormality; the method comprises the following steps: selecting a severely changing region of a six-level watershed scale, carrying out social ecological factor and groundwater cause analysis on the region, and completing groundwater reserve monitoring on the basis of groundwater reserve abnormality time-space analysis and the result of the social ecological factor and groundwater cause analysis. According to the method, groundwater reserve abnormal data is calculated based on GRACE gravity satellite data and GLDAS model output data, space-time analysis of groundwater reserves is carried out, and finally cau