Co-Seismic Horizontal Shortening Associated with Wenchuan Earthquake from High Resolution Satellite Images: Taking Baishahe Section as an Example

• 责任者：Shi Feng (National Center for Active Fault Studies ; Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; He Honglin
• 刊名：Earth Science Frontiers
• 出版年：2010
• 卷期：17(5)
• 关键词：汶川地震2008 ; Wenchuan earthquake 2008 ; 地壳缩短 ; crustal shortening ; 龙门山断裂带 ; Longmenshan Fault Zone
• 页码：p.67-74
• 图表：7 illus., 31 refs.
• 分类号：0500
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

The May 12th, 2008 Wenchuan earthquake (M_w 7.9) in Sichuan Province led to severe casualties and a huge economic loss. Field investigations after the earthquake have obtained a lot of co-seismic deformation data. In order to estimate the horizontal shortening, the authors suggested a new method: drawing reference geometric features in QuickBird images first; then calculating the space between adjacent features before and after earthquake, respectively; finally obtaining the co-seismic horizontal shortening based on the contrast of the spaces before and after earthquake.