地下水漏斗对昌邑-新河相对重力观测的影响  

Influence of Groundwater Funnel on Relative GravimetricData in Changyi-Xinhe Area

作　　者：李树鹏 张春鹏 李国一 陆汉鹏[1] 王锋吉[1] 吴双 LI Shupeng;ZHANG Chunpeng;LI Guoyi;LU Hanpeng;WANG Fengji;WU Shuang(Shandong Earthquake Agency,20 East-Wenhua Road,Ji’nan 250014,China)

机构地区：[1]山东省地震局,济南市250014

出　　处：《大地测量与地球动力学》2020年第11期1129-1132,共4页Journal of Geodesy and Geodynamics

基　　金：山东省地震局科研基金(YB2004)。

摘　　要：通过分析昌邑-新河测段1991~2019年LCR-G型与CG-5型相对重力仪的相对重力观测数据和测点附近水文资料发现:1)2009~2018年相对重力观测值持续增大的主要原因为昌邑市地下水位下降,水位降低的最大影响可达132μGal;2)2014-05~2016-03相对重力累计下降72μGal,并在2016-03~2018-05快速回升,这一现象是否与动力学原因有关尚不明确。Based on the relative gravimetric data measured by LCR-G and CG-5 relative gravimeter and hydrological data in Changyi-Xinhe area from 1991 to 2019,we find that:1)The increasing relative gravimetric data from 2009 to 2018 is mainly caused by the decline of groundwater level in Changyi city,and the maximum effect can reach to 132μGal.2)The relative gravity decreased by 72μGal cumulatively from May 2014 to March 2016,and it recovered rapidly from March 2016 to May 2018.It is not clear whether this phenomenon is related to the dynamics.

关 键 词：相对重力测量 重力变化 地下水漏斗 水位变化 地下水改正 

分 类 号：P312[天文地球—固体地球物理学]