李七庄基岩点垂直形变趋势研究  

RESEARCH ON VERTICAL STABILITY OF LIQIZHUANG BEDROCK POINT

作　　者：陈阜超[1,2] 纪静[3] 韩月萍[2] 陈聚忠[2] 

机构地区：[1]武汉大学测绘学院,武汉430079 [2]中国地震局第一监测中心,天津300180 [3]天津市地震局,天津300201

出　　处：《大地测量与地球动力学》2013年第6期49-52,共4页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震行业专项(201208006);中国地震局地震科技星火计划项目(XH13037Y)

摘　　要：通过对首都圈地震垂直形变监测网和天津市控制地面沉降监测网的一等水准观测成果的计算分析,找到相对稳定的参考点或参考基准进行拟稳平差,并结合GPS连续站观测计算结果比对分析,发现李七庄基岩点近年来以2.5 mm/a的速率下沉。The relatively stable reference point or benchmarkand was finded according to the concept of ＂rela- tively stable＂ and it was used to analize stability of the leveling points and evolution of the motion state with the data from the Capital Circle Vertical Deformation Monitoring Network and the Control Land Subsidence Monitoring Net- work in Tianjin. The results combined with the analysis results of GPS data indicate that Liqizhuang bedrock point is sinking at 2.5 mm/a in the recent years.

关 键 词：基岩点 拟稳点 基准 水准测量 GPS 

分 类 号：P315.725[天文地球—地震学]