| 利用GRACE反演陕甘晋高原地下水储量变化 |
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| 引用本文： | 谢小伟,许才军,龚正,李伟.利用GRACE反演陕甘晋高原地下水储量变化[J].测绘通报,2018,0(1):133-137. |
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| 作者姓名： | 谢小伟 许才军 龚正 李伟 |
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| 作者单位： | 武汉大学测绘学院, 湖北 武汉 430079 |
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| 基金项目： | 国家自然科学基金重点项目 |
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| 摘 要： | 采用GRACE时变重力场模型和GLDAS水文模型反演了陕甘晋高原地下水储量的时空变化，并与TRMM降雨资料及实测水井数据进行了对比分析。研究结果表明：在时间域上，整个区域的地下水在2005-2014年大约以3.6±0.7 mm/a的速率递减；在空间域上，整个区域自西向东10年内的递减速率依次增大，其中山西中部地区最大。与TRMM降雨资料的对比发现，降雨与地下水储量变化强相关，但不是引起地下水储量减少的原因。与水井实测数据对比发现，除特殊情况外，本文反演得到的结果与水井水位变化趋势基本一致。
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| 关 键 词： | GRACE 重力场模型 GLDAS 地下水储量 |
| 收稿时间： | 2017-04-06 |
Groundwater Storage Changes in Shan-Gan-Jin Plateau Derived from GRACE |
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| XIE Xiaowei,XU Caijun,GONG Zheng,LI Wei.Groundwater Storage Changes in Shan-Gan-Jin Plateau Derived from GRACE[J].Bulletin of Surveying and Mapping,2018,0(1):133-137. |
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| Authors: | XIE Xiaowei XU Caijun GONG Zheng LI Wei |
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| Institution: | School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China |
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| 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. |
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| Keywords: | GRACE gravity field model GLDAS groundwater storage |
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