Title: Characteristics of the Surface Rupture of the M_S8.0 Wenchuan Earthquake on the Epicenter,Yingxiu Area
Abstract:On epicenter area of Wenchuan great earthquake in 2008,Yingxiu town,Sichuan province,the earthquake caused a number of surface rupture,such as road bending deformation,fault scarps and new deformation...On epicenter area of Wenchuan great earthquake in 2008,Yingxiu town,Sichuan province,the earthquake caused a number of surface rupture,such as road bending deformation,fault scarps and new deformation at the groove in slope,the total length of zone is about 300 meters. Using total station and GPS,at 4 rupture points displacement were measured,and vertical and level components of offset were analyzed quantitatively,as well as ratio between them. The result shows that motion of seismogenic Yingxiu-Beichuan fault is mainly thrust with some right-lateral strike slip,the thrust component is greater than strike-slip component at Yingxiu area. Comparing surface rupture before and after event at same place,it is revealed that earthquake rupture is anastomose with active location of Yingxiu-Beichuan fault during recent geology history,which means that fault scarp about 40 m on terrace Ⅳ of Mingjiang river maybe is results of number of major earthquakes in geological history.Read More
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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