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《Earthquake》 2009-01
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Deformation Evidence and Model Deduction about the Generation Mechanism of the Wenchuan M_S8.0 Earthquake

BO Wan-ju,YANG Guo-hua,ZHANG Feng-shuang(First Crust Deformation Monitoring and Application Center,CEA,Tianjin 300180,China)  
This paper presents the ground raising image of the area to the south of the epicenter of the Wenchuan MS8.0 earthquake obtained from years′ mobile leveling,the variation curve of Gengda short leveling across the fault on the epicenter,and the vertical and horizontal crust movement monitored by GPS in the area around the epicenter.A model for the generation of strong intra-plate thrust earthquake,shortly called PUTDOWN(Press-Up and Thrust-Down) Model,is developed by integrated analysis and deduction,by which all the anomalies showed in the figures can be well understood coincidently.
【Fund】: 天津市基金项目;; 汶川大震科考预研究项目
【CateGory Index】: P315.2
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