摘要
利用南北地震带及附近地区20世纪70年代至今的区域水准网重复观测资料,结合地质构造和监测区发生的多次6级及以上震例,分析位于不同构造环境的祁连山-河西走廊和川滇等多震区强震前后垂直形变背景异常分布状态,并与大华北地区几次典型震例进行比较。总结和归纳不同构造环境下与强震蕴育有关的区域性垂直形变背景异常的共性和差异性,探讨其形成机理和对强震地点预测的意义。
By use of the repeated observational data of regional leveling network since 1970s and combining with the geologic tectonic and the recent earthquakes （Ms ≥ 6.0） in the monitored area, the distribution of the background abnormity of vertical deformation before and after strong earthquakes in different tectonic conditions of Qilianshan-Hexi corridor and Chuandian areas are analyzed emphaticaly, and compared with several typical seismic cases in North China. The generality and individuality characteristics of background abnormity of regional vertical deformation related to earthquake genesis in various tectonic conditions are summarized. Finally its mechanism and the meaning for forecasting the place where strong earthquakes occur are discussed.
出处
《大地测量与地球动力学》
CSCD
北大核心
2008年第1期1-6,共6页
Journal of Geodesy and Geodynamics
基金
"十一五"国家科技计划支撑项目子专题"活动断裂带构造变形动态特征及地震危险性研究"(2006BAC01B02-02-03)
关键词
南北地震带
不同构造环境
地震形变异常
共性与差异性
强震预测
North-South Seismic Belt
various tectonic conditions
seismic deformation abnormity
universality and individuality
strong earthquake forecasting
