摘要
从宏观区域场的角度出发,运用GPS资料计算的应变场、强震前震中附近中小地震和地球自转速率季节性变化的关系,以及强震前中小地震震源机制的变化三种资料,来分析汶川8.0级地震前震中附近区域场的变化。
In this paper, we discussed the variation of the macro- regional field before strong earthquakes. We used the strain field computed by GPS data, the relationship between the medium - small earthquakes around the epicenter before the strong earthquakes and seasonal variation of LOD, and the variation of the focal mechanisms of the medium - small earthquakes to analyze the changing of region field in epicenter and its surrounding area before the M8.0 Wenchuan earthquake. We hope that this research will benefit us to further understanding the relationship between earthquakes and variation of region field.
出处
《测绘与空间地理信息》
2013年第6期148-150,153,共4页
Geomatics & Spatial Information Technology
关键词
应变场
地球自转
震源机制
地震预测
strain field
earth rotation
focal mechanism
earthquake prediction
