摘要
针对地表沉降与地下水储量变化相关性这一问题。该文选取华北地区这一地表沉降典型区域,①利用2003-2009年GRACE月重力场模型和全球陆地数据同化系统GLDAS-Noah模型求得华北地区地下水储量平均变化速率为-16±2 mm/a;②利用1999-2009年275个GPS站点垂直方向速度求得华北地区地表沉降平均速率为-30 mm/a;③结合2003-2009年中国地面2 472台站降水资料和WGHM全球水文模型进行分析。结果表明,华北地区地下水储量变化与年降水量的关系并不明显,地面沉降与降水量的相关性也不明显,但与地下水储量有着显著的关联,地表沉降严重地区的地下水储量下降趋势较大,华北地区地下水储量变化与地表沉降变化整体呈现下降趋势。
In order to analyze the correlation between surface subsidence and groundwater storage changing,this paper selected north China as the typical area of surface subsidence.Firstly,using the GRACE monthly gravity field model from 2003 to 2009 and the GLDAS-Noah model of the global terrestrial data assimilation system,we could come to a conclusion that the average changing rate of groundwater storage in north China is about-16±2 mm/a.Secondly,using the vertical velocity of 275 GPS stations from 1999 to 2009,we knew that the average rate of surface subsidence in north China is-30 mm/a.Finally,we could also use the precipitation data of 2472 stations in China from 2003 to 2009 and water gap global hydrology model.With the above methods,it turned out that there was no obvious relation between the groundwater storage changing and annual precipitation in north China,what’s more,there was no obvious relation between surface subsidence and precipitation.However,surface subsidence had a distinct correlation with groundwater storage,the worse the surface subsidence was the larger the decline trend of groundwater storage,the groundwater storage changing and surface subsidence in north China had shown a downward trend.
作者
贾旭
文汉江
刘焕玲
董杰
陈柏含
JIA Xu;WEN Hanjiang;LIU Huanling;DONG Jie;CHEN Bohan(School of Geomatics,Liaoning Technical University,Fuxin,Liaoning 123000,China;Chinese Academy of Surveying and Mapping,Beijing 100036,China;Beijing Institute of Surveying and Mapping,Beijing 100038,China)
出处
《测绘科学》
CSCD
北大核心
2020年第3期15-22,共8页
Science of Surveying and Mapping
基金
民用航天预先研究项目
高分辨率对地观测系统重大专项
中国测绘科学研究院基本科研业务费资助项目(7771811)
辽宁省教育厅辽宁省高等学校基本科研项目(LJ2017QL008)
German Academic Exchange Service(DAAD)ThematicNetwork Program“Modern Geodetic Space Techniques forGlobal Change Monitoring”(57421148)
武汉大学地球空间环境与大地测量教育部重点实验室开放基金资助项目(18-01-05)
城市空间信息工程北京市重点实验室经费资助项目(2019211)。
作者简介
贾旭(1992-),男,内蒙古巴彦淖尔人,硕士研究生,主要研究方向为空间大地测量。E-mail:957672647@qq.com。
