摘要
选取唐山老震区1992—2014年的流动重力,绘制重力场测值空间变化等值线和时序变化曲线,结合唐山地区4次M≥5.0地震进行异常分析。发现震前有如下特征:(1)流动重力观测资料均有较为明显的前兆异常反应;(2)地震均发生在重力变化的"0"等值线附近。
Selected th Tangshan old seismic region in 1992-2014 flowinge gravity,drawing contour spatial variation of gravity field measurements and temporal variation curve,combining the Tangshan region 4times 5.0earthquake anomaly analysis.It is concluded that anomaly before the earthquake showed the following characteristics：（1）flowing gravity observation data are relatively obvious precursory anomaly response;（2）Earthquake occurred close to the contours of the gravity changes.
出处
《地震工程学报》
CSCD
北大核心
2016年第A02期208-211,共4页
China Earthquake Engineering Journal
基金
河北省地震局科技星火2014年一般项目(DZ20150427100)
关键词
流动重力
异常
等值线
flowing gravity
anomaly
contour
