测绘通报 ›› 2018, Vol. 0 ›› Issue (1): 133-137.doi: 10.13474/j.cnki.11-2246.2018.0026

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Groundwater Storage Changes in Shan-Gan-Jin Plateau Derived from GRACE

XIE Xiaowei, XU Caijun, GONG Zheng, LI Wei   

  1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • Received:2017-04-06 Online:2018-01-25 Published:2018-02-05

Abstract:

The GRACE and GLDAS were used to invert variation of groundwater reserves in time and space in the Shan-Gan-Jin plateau.The results show that the groundwater reserves decreased at the rate of 3.6±0.7 mm/a from 2005 to 2014,and the decreasing rate was increasing from west to east in space.By comparing with the TRMM rainfall data and measured wells data,it was found that rainfall was strongly associated with changes in groundwater reserves,but not the cause of reduced groundwater reserves.And the results we obtained were basically the same as those of well water level,the special cases excluded.

Key words: GRACE, gravity field model, GLDAS, groundwater storage

CLC Number: