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。
The GRACE and GLDAS were used to invert variation of groundwater reserves in time and space in the Shan-Gan-Jin plateau.The resuhs 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 TttMM 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.
出处
《测绘通报》
CSCD
北大核心
2018年第1期133-137,共5页
Bulletin of Surveying and Mapping
基金
国家自然科学基金重点项目(41431069)
