基于SRTM DEM的二路差分获取仲巴地震的地震形变信息
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摘要
本文简要介绍了已知DEM的二路差分的基本原理,并以西藏2004年7月12日仲巴地震为例,获取了仲巴地震的同震形变场。采用Okada弹性半空间位错模型反演了该地震的震源参数,得到了最佳震源机制解。结果表明:仲巴地震是以倾滑为主的右旋正断层型地震,断层面走向近乎南北方向(179°),倾角43,°深度13Km,三个方向的位移矢量分别为:-200mm、700mm和0mm。
In the paper,two-pass differential interferometric processing method was generally introduced.Then Zhongba earthquake was selected as an example to obtain the coseismic deformation field.The result indicated that it is a shallow dip-slipping predominant normal-fault earthquake.The strike of fault plane is nearly South-North(179°),dip angle 43°,depth 13km,displacement vector of three directions are:-200mm,700mm and 0mm.
In the paper,two-pass differential interferometric processing method was generally introduced.Then Zhongba earthquake was selected as an example to obtain the coseismic deformation field.The result indicated that it is a shallow dip-slipping predominant normal-fault earthquake.The strike of fault plane is nearly South-North(179°),dip angle 43°,depth 13km,displacement vector of three directions are:-200mm,700mm and 0mm.
引文
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