基于SRTM DEM的二路重轨DINSAR地震形变探测 以2001年昆仑山口西MS8.1大地震震中为例

地震 ›› 2005, Vol. 25 ›› Issue (4): 105-112.

基于SRTM DEM的二路重轨DINSAR地震形变探测以2001年昆仑山口西M_S8.1大地震震中为例

张艳梅¹, 程晓², 李斐³, 廖明生³

1.中国地震局地震预测研究所, 北京 100036;
2.中国科学院遥感应用研究所遥感科学国家重点实验室, 北京 100101;
3.武汉大学测绘遥感信息工程国家重点实验室, 湖北武汉 430079

收稿日期:2005-04-22 修回日期:2005-06-09 出版日期:2005-10-31 发布日期:2021-11-10
作者简介:张艳梅(1975-), 女, 黑龙江大庆人, 硕士, 主要从事雷达遥感地表信息提取等研究。
基金资助:
中国科学院知识创新工程前沿领域项目(CX020006)

Study on two-pass DINSAR using SRTM DEM for seismic deformation measurement: a case study on M_S8.1 Kokoxili earthquake in 2001

ZHANG Yan-mei¹, CHENG Xiao², LI Fei³, LIAO Min-sheng³

1. Institute of Earthquake Science, CEA, Beijing 100036;
2. State key Laboratory of Remote sensing Science, IRSA, CAS, Beijing 100101;
3. LIESMARS, Wuhan, 430079, China

Received:2005-04-22 Revised:2005-06-09 Online:2005-10-31 Published:2021-11-10

摘要/Abstract

摘要： 雷达差分干涉测量(DINSAR)技术能够精确测量雷达视线向的地表形变量的特性, 使其成为一种新兴的地表形变遥感测量方法。 2001年11月14日发生的昆仑山口西8.1级大地震是近50年来发生在我国大陆的最大规模地震。地震造成的断裂带长度约350 km。文中以断裂带最西端的震中地区为实验区, 选取多时相ERS-2 SAR影像和航天飞机SRTM DEM数据, 采用二路重轨雷达差分干涉处理方法提取了地震形变信息并进行了对比验证。研究结果表明, 采用外部DEM的二路差分方法在地形起伏大的高山地区较为有效, 且昆仑山地震太阳湖南侧地震破裂带是左旋性质的。

关键词: 二路差分, 雷达差分干涉测量, 地震形变, 昆仑山口西地震

Abstract: Differential SAR Interferometry (DINSAR) could measure look-of-sight displacement precisely, thus become a novel and remote means for measuring earth-surface displacement from space. The M_S8.1 Kokoxili earthquake, occurred on Nov. 14, 2001, is of huge influence in the world, whose rupture zone extended for more than 400 km, at the western end of the left-lateral Kunlun fault. The epicenter region is selected as study area. Multi-temporal European ERS-2 SAR imagery and shuttle-based SRTM DEM covering the epicenter region are used for DINSAR research. The surficial displacements are estimated with two-pass DINSAR methods and compared for validation. The result shows that two-pass DINSAR with external DEM might obtain better result over fluctuating mountains. It is also found that the rupture zone south of Sun lake is left-lateral.

Key words: Two-pass DINSAR, Different SAR Interferometry, Seismic displacement, Kokoxili earthquake

中图分类号:

P315.7

张艳梅, 程晓, 李斐, 廖明生. 基于SRTM DEM的二路重轨DINSAR地震形变探测以2001年昆仑山口西M_S8.1大地震震中为例[J]. 地震, 2005, 25(4): 105-112.

ZHANG Yan-mei, CHENG Xiao, LI Fei, LIAO Min-sheng. Study on two-pass DINSAR using SRTM DEM for seismic deformation measurement: a case study on M_S8.1 Kokoxili earthquake in 2001[J]. EARTHQUAKE, 2005, 25(4): 105-112.

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