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    MA Yin-sheng, LONG Chang-xing, TAN Cheng-xuan. 2008: Co-seismic Deformation Features and Segmentation of the Ms 8.0 Wenchuan Earthquake in Sichuan. Geological Bulletin of China, 27(12): 2076-2085.
    Citation: MA Yin-sheng, LONG Chang-xing, TAN Cheng-xuan. 2008: Co-seismic Deformation Features and Segmentation of the Ms 8.0 Wenchuan Earthquake in Sichuan. Geological Bulletin of China, 27(12): 2076-2085.
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    Co-seismic Deformation Features and Segmentation of the Ms 8.0 Wenchuan Earthquake in Sichuan

    • Key Laboratory of Neotectonic Movement & Geohazard, Ministry of Land and Resources, Beijing

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    • There are two seismic fractured zones developed when the Wenchuan earthquake happened. One occurred along the active fault-zone in the central Longmen Mts. and the other in the front of Longmen Mts.. The length of which is more than 200km and about 80km respectively. The co-seismic deformation shows thrust flexural belt with strike of N45°~60°E in the ground, which caused uplift at its northwest side and subsidence. The fault face dips to northwest with dip angle ranged from 50° to 60°. The vertical offset of the flexural belt ranges 2.5-3.0m along Yingxiu-Beichuan seismic fault, and 1.5-1.1m along Doujiangyan-Hanwang fault. Movement of co-seismic deformation presents obvious segmented features along the active fault-zone in the central Longmen Mts., for instance, in the section from Yingxiu to Leigu town, thrust without evident slip occurred; while from Beichuan to Qingchuan, thrust and dextral strike-slip both happened. But main movement along the front Longmen Mts shows thrust without slip and segmented features.
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