Study of Earth Observation for Disaster Reduction in Wenchuan and Yushu Earthquakes
详细信息
- 责任者：Guo Huadong (Key Laboratory of Digital Earth Sciences ; Center for Earth Observation and Digital Earth ; Chinese Academy of Sciences ; Beijing 100094 ; China) ; Liu Liangyun
- 刊名：Geological Journal of China Universities
- 出版年：2011
- 卷期：17(1)
- 关键词：震灾 ; seismic hazard ; 遥感 ; remote sensing ; 四川 ; Sichuan Province ; 青海 ; Qinghai Province
- 页码：p.1-12
- 图表：6 illus., 1 table, 30 refs.
- 分类号：1600
- issnNo：ISSN1006-7493
- isbnNo：CN32-1440/P
摘要
This paper introduces three typical results of these two earthquakes by the Center for Earth Observation and Digital Earth (CEODE), Chinese Academy of Sciences (CAS). Firstly, optical earth observation techniques were used in deriving locations, spatial distribution and intensities of three important secondary geological disasters including barrier lakes, damaged transportation and collapses/landslides/debris flows. Secondly, multi-mode Synthetic Aperture Radar (SAR) techniques were used to analyze the regional geological structures and lithologic distribution characteristics, and then obtain sizes and spatial distribution of coseismic deformation fields in heavily hit areas during the Yushu earthquake. Finally, 3D software system for disaster simulation and assessment was developed which provided accurate and effective ways for decision-making of emergency rescues and disaster relief.