Co-Seismic Deformation of “5.12” Wenchuan Earthquake Based on D-InSAR, Sichuan Province

• 责任者：Yao Xin (Key Lab. of Neotectonic and Geohazard MLR ; Beijing 100081 ; China) ; Zhang Yongshuang
• 刊名：Journal of Geomechanics
• 出版年：2009
• 卷期：15(2)
• 关键词：地形变 ; ground deformation ; 合成孔径雷达 ; synthetic aperture radar ; 四川 ; Sichuan Province
• 页码：p.151-161
• 图表：5 illus., 37 refs.
• 分类号：0500
• issnNo：ISSN1006-6616
• isbnNo：CN11-3672/P

Co-seismic deformation is important original information to determine seismogenic faults, to understand mechanism of earthquake, to analyze fault movement, to evaluate the earthquake property losses as well as to discover the trend of future earthquakes. This paper presents D-InSAR principle and reviews progress of D-InSAR applied to co-seismic deformation observation, then qualitatively analyzes characteristics of D-InSAR image about “5.12” Wenchuan earthquake. Results show that many geological phenomena, surface ruptures, change of fault dip angle, vertical displacement of two plates alone fault and distribution of huge geo-hazards, are highly related with D-InSAR image.