DInSAR技术监测玉树地震同震形变场的研究  

Research on extract Yushu earthquake coseismic deformation by Differential Interferometry Synthetic Aperture Radar

作　　者：刘学武 胡波[2] 莫玉娟 白蓉 

机构地区：[1]西宁市测绘院,青海西宁810001 [2]中国科学院测量与地球物理研究所动力大地测量学重点实验室,湖北武汉430077

出　　处：《测绘工程》2011年第6期38-39,44,共3页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(40574010);国家杰出青年科学基金资助项目(40825012)

摘　　要：近二十年来,合成孔径雷达干涉测量技术(DInSAR)作为一种监测地表形变的有效技术得到广泛应用,其视线向精度可达厘米级甚至毫米级。该技术尤其是对监测快速、激烈的地表形变更为有效,如地震、火山等。利用DInSAR技术,选用日本ALOS卫星PALSAR数据,获取了2010-04-14玉树Mw6.9地震的同震形变场。结果表明:地表至少发生过3次地表破裂,沿断层走向的形变分布范围远远大于垂直断层分布范围,形变分布特征以左旋走滑为主。Over the past two decades differential interferometric synthetic aperture radar （DInSAR） has be- come a widely used tool for measuring surface displacements,with centimeter or even more millimeter lev- els precision in line of sight（LOS）. DInSAR is a very effective technique especially for monitoring fast and intence deformation,such as earthquake, volcano, and so on. In this work, using DInSAR technology, we selected the Japanese satellite ALOS/PALSAR data, obtained the coseimic surface deformation of Yushu earthquake Mw6.9 on April 14,2010. Analysis results show that there were surface ruptures three times at least, the deformation along the fault was much larger than that of the perpendicular, the distribution of deformation dominated by left-lateral strike-slip.

关 键 词：合成孔径雷达差分干涉测量 地震形变 地面沉降 同震形变场 

分 类 号：P542[天文地球—构造地质学]