基于PS-InSAR的怀来台定点形变群体异常机理分析  

Analysis of the Group Anomaly Mechanism of Fixed Point Deformationat Huailai Seismic Station Based on PS-InSAR

作　　者：高晨 马广庆[1] 王晓山[1] 屈曼[1] 马栋[1] 陈建国[1] GAO Chen;MA Guangqing;WANG Xiaoshan;QU Man;MA Dong;CHEN Jianguo(Hebei Earthquake Agency,Shijiazhuang 050021,China)

机构地区：[1]河北省地震局,河北石家庄050021

出　　处：《测绘与空间地理信息》2024年第7期38-41,共4页Geomatics & Spatial Information Technology

基　　金：河北地震科技星火计划项目(DZ202108100002、DZ20190424079);中国地震局震情跟踪定向工作任务(2022010210)资助。

摘　　要：以怀来台为例,联合定点形变仪器观测结果和PS-InSAR技术监测结果,研究2017年11月至2018年3月怀来台定点形变仪器群体观测异常发生的机理。结果显示:怀来台所在区域地面沉降中心位于义合堡村的抽水井;地面沉降起始时间和定点形变仪器观测数据出现群体异常时间与义合堡村供热抽水井在供暖期抽取地下水的时间同步。综上认为在供暖期内义合堡村用于供热的抽水井抽水活动导致怀来台定点形变观测仪器出现群体异常。该技术可被广泛应用到定点形变仪器观测异常机理研究方面。In this study,taking Huailai seismic station as an example,the joint fixed-point deformation observation results and PS-In-SAR technique monitoring results are used to study the group anomaly mechanism of the fixed-point deformation observation instrument from November 2017 to March 2018.The results show that the center of ground subsidence near the Huailai seismic station is located at the pumping well in Yihebu village;the starting time of ground subsidence and the occurrence of group observation anomalies of the fixed-point deformation observation instruments are same as the time of extracting groundwater from the heating pumping well in Yihe-bu village during the heating period.In summary,it is believed that during the heating period,the pumping activity of the pumping well used for heating in Yihebu village resulted in group observation anomalies in the fixed-point deformation observation instruments at Huailai seismic station;at the same time,this technology can be widely applied to the study of anomaly mechanism observed by fixed-point deformation instruments.

关 键 词：PS-INSAR 怀来地震台 定点形变 群体异常 抽水 

分 类 号：P25[天文地球—测绘科学与技术] TB22[天文地球—大地测量学与测量工程]