D-InSAR技术用于震后地表形变监测  

Application of Radar Interferometry in the Post-earthquake Surface Deformation

作　　者：王孝青[1] 党亚民[1] 

机构地区：[1]中国测绘科学研究院,北京100039

出　　处：《海洋测绘》2008年第6期25-28,共4页Hydrographic Surveying and Charting

基　　金：国家自然基金项目(40774099);国家863项目(2006AA12Z303);重点实验室项目(B2531;200604)

摘　　要：简要介绍了干涉合成孔径雷达测量原理以及二轨差分处理流程,利用D-InSAR技术和ENVISAT ASAR雷达影像数据,获取了巴姆地区震后一个月期间的形变场,得到了形变等值线图和最大形变处剖面图,通过对震后形变场深入分析与解译,分析研究了地震造成的地壳运动。这些结果有利于分析地震后地壳运动趋势、幅度以及进行震后灾害估计。This paper introduced the principle of Interferometry SAR technique and data processing flow of Two-pass Differential Interferogram. Then we used ENVISAT ASAR data to get the surface deformation during 35 days after the Bam earthquake, in order to carry out detailed interpretation and analysis we generated the profiles and the isoline map for the maximal deformation areas according to the deformation map. Finally, we analyzed the crustal movement due to the Bam earthquake, and the result is useful to explain the direction and extent of crustal movement following the earthquake, as useful for the disaster estimation in post-earthquake well.

关 键 词：D—InSAR 二轨差分 巴姆地震 震后形变 

分 类 号：P237[天文地球—摄影测量与遥感]