基于InSAR的海原—老虎山—毛毛山断裂带现今地壳形变特征

地震 ›› 2017, Vol. 37 ›› Issue (2): 78-85.

基于InSAR的海原—老虎山—毛毛山断裂带现今地壳形变特征

孙赫¹, 徐晶¹, 邵志刚²

1.中国地震局第二监测中心, 陕西西安 710054;
2.中国地震局地震预测研究所中国地震局地震预测重点实验室, 北京 100036

收稿日期:2016-07-25 出版日期:2017-04-20 发布日期:2019-08-14
作者简介:孙赫(1986-), 女, 吉林长春人, 助理工程师, 主要从事地壳形变与地震预测等研究工作。
基金资助:
国家自然科学基金项目(41474079; 41604015)

Present-day Crustal Deformation of the Haiyuan—Laohushan—Maomaoshan Fault Based on InSAR

SUN He¹,XU Jin¹,SHAO Zhi-gang²

1.Second Crust Monitoring and Application Center, CEA, Xi’an 710054, China;
2.Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, CEA, Beijing 100036, China

Received:2016-07-25 Online:2017-04-20 Published:2019-08-14

摘要/Abstract

摘要： 本文利用107景L波段2007年至2011年的ALOS/PALSAR卫星影像, 采用干涉图堆叠技术, 基于GAMMA软件, 利用影像数据公共区域的均值统计校正, 首次获取海原—老虎山—毛毛山断裂带整体地区的平均地壳形变速度场, 将大范围形变结果进行统一表达。沿断层方向形变结果表明, 断裂带两侧存在明显差异运动, 断层的运动性质为左旋, 其中毛毛山-老虎山段的差异运动比较显著, 在震情跟踪工作中要给予重视。另外, 结合研究区域内长期GPS水平速度场, 从多角度研究了区域现今地壳运动的特征。

关键词: 干涉图堆叠技术, 海原—老虎山—毛毛山断裂带, 地壳形变速度场

Abstract: We first obtained the average crustal deformation velocity field of the Haiyuan—Laohushan—Maomaoshan fault by interference stacking technology between 2007 and 2011, based on GAMMA and the mean statistical correction from public area of L band 107 ALOS/PALSAR satellite images data. In order to get the large area deformation, and integratedly expressed for wide-range deformation. The parallel fault deformation results show that there is an obvious difference on both sides of the fault which is left-lateral, the differential movement of Maomao—Laohu mountain was relatively outstanding and we should pay attention to it in the earthquake tracking work. The InSAR deformation also shows that the spatial extent and distribution characteristics of regional surface deformation anomaly area. Furthermore, combining with the regional GPS horizontal velocity field, we studied various dimensioned deformation characteristics of the study area.

Key words: Crustal deformation velocity field, Stacking, Differential movement, Haiyuan—Laohushan—Maomaoshan fault

中图分类号:

P315.7

孙赫, 徐晶, 邵志刚. 基于InSAR的海原—老虎山—毛毛山断裂带现今地壳形变特征[J]. 地震, 2017, 37(2): 78-85.

SUN He,XU Jin,SHAO Zhi-gang. Present-day Crustal Deformation of the Haiyuan—Laohushan—Maomaoshan Fault Based on InSAR[J]. EARTHQUAKE, 2017, 37(2): 78-85.

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