基于PS-InSAR技术的断裂带地壳形变实验研究

doi:10.11867/j.issn.1001-8166.2012.04.0452

地球科学进展 ›› 2012, Vol. 27 ›› Issue (4): 452 -459. doi: 10.11867/j.issn.1001-8166.2012.04.0452

徐小波 ^1,2，屈春燕 ¹，单新建 ¹，马超 ²，张桂芳 ¹，孟秀军 ^1，2

1.中国地震局地质研究所地震动力学国家重点实验室，北京100029;
2.河南理工大学测绘与国土信息工程学院，河南焦作454003

收稿日期:2011-09-01 修回日期:2012-01-10 出版日期:2012-04-10
通讯作者: 徐小波（1988-），男，江西上饶人，硕士研究生,主要从事InSAR技术监测地表形变研究. E-mail:tim-xxb@163.com
基金资助:
地震动力学国家重点实验室课题“基于CR/PSINSAR技术的南北地震带中北段地壳形变观测与研究”(编号：LED2010A02)和“汶川地震同震—震后InSAR形变场演化图像与发震断层特征研究”(编号：LED2008A06）资助.

An Experimental Study of Monitoring Fault Crustal Deformation Using PS-InSAR Technology

Xu Xiaobo ^1,2，Qu Chunyan ¹，Shan Xinjian ¹，Ma Chao ²，Zhang Guifang ¹，Meng Xiujun ^1,2

1.State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing100029, China；2.School of Surveying and Land Information Engineering, He′nan Polytechnic University, Jiaozuo454003,China

Received:2011-09-01 Revised:2012-01-10 Online:2012-04-10 Published:2012-04-10

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PS-InSAR技术克服了常规D-InSAR技术的空间、时间失相干和大气相位延迟等影响，对高相干点的差分干涉相位采用二维线性（或非线性）回归分析模型获取微小形变。概述PS-InSAR技术的相位组成、技术处理流程，以位于祁连山海原断裂带北盘的海原县为实验区，采用2003—2009年的21景ENVISAT ASAR数据，以GAMMA软件IPTA模块为软件平台处理得出实验区位移速率为-7~-9 mm/a，运动方向为自东向西，断裂带表现为左旋走滑，实验结果与GPS、库仑应力和地质学方法结果有较好的一致性。

关键词: PS-InSAR, 海原断裂, 高相干点, 地壳形变

PS-InSAR can get small deformation value of experimental area using two-dimensional linear(nonlinear) phase regression analysis model of high phasecoherent point differential interference phase.PS-InSAR avoids some phase error such as the phase decorrelations in time and space and atmospheric phase delay of D-InSAR. We introduce PS-InSAR phase composition,technology processing.And we take Haiyuan fault zone as experimental area (selecting a small area in Haiyuan fault)and use 21 scenes of ENVISAT ASAR data from 2003 to 2009. We apply IPTA module in GAMMA software and get deformation rate about -7~-9 mm/a in Haiyuan county of Haiyuan fault north plate.Movement direction is from east to west and display a left lateral slip fault is displayed.The experiment results compared with GPS and geological investigations results by other scholars are in good agreement.

Key words: PS-InSAR, Haiyuan fault, High phase-correlation point, Crustal deformation

中图分类号:

P223
P541

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