首都圈重力场动态变化研究  

STUDY ON DYNAMIC GRAVITY CHANGES IN THE CAPITAL AREA

作　　者：孙铭心[1] 刘善华[1] 张鹤[1] 陈白鹭[1] 刘小林[1] 杨怀宁[1] 

机构地区：[1]中国地震应急搜救中心,北京100049

出　　处：《大地测量与地球动力学》2009年第5期6-10,17,共6页Journal of Geodesy and Geodynamics

基　　金：地震科学联合基金(A07119)

摘　　要：讨论重力场动态变化计算的空间基准和时间基准的确定问题;对首都圈重力网78期测量资料进行计算,给出了华北地区几次5级以上地震孕育过程中重力场动态变化图像;提出适合于首都圈测网的重力异常判定指标。The determination of space datum and time datum for the computation of the dynamic change of gravity field is discussed. 78 issues of observations of gravity network in the Capital area are computed. The dynamic patterns of gravity field in the seismogenic process of several ML 〉 5.0 earthquakes in North China and the judgement index for the gravity anomaly of gravimetric network in the Capital area are giver.

关 键 词：首都圈重力网 重力场动态变化 时间和空间基准 重力异常 判定指标 

分 类 号：P315.726[天文地球—地震学]