Deep Background of Wenchuan Earthquake and the Upper Crust Structure beneath the

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Deep Background of Wenchuan Earthquake and the Upper Crust Structure beneath the Longmen Shan and Adjacent Areas

By analyzing the deep seismic sounding profiles across the Longmen Shan, this paper focuses on the study of the relationship between the upper crust structure of the Longmen Shan area and the Wenchuan earthquake. The Longmen Shan thrust belt marks not only the topographical change, but also the lateral velocity variation between the eastern Tibetan Plateau and the Sichuan Basin. A low-velocity layer has consistently been found in the crust beneath the eastern edge of the Tibetan Plateau, and ends beneath the western Sichuan Basin. The low-velocity layer at a depth of -20 km beneath the eastern edge of the Tibetan Plateau has been considered as the deep condition for favoring energy accumulation that formed the great Wenchuan earthquake.水利论文O s4cW)c

作 者: LI Qiusheng GAO Rui WANG Haiyan ZHANG Jisheng LU Zhanwu LI Pengwu GUAN Ye HE Rizheng  
作者单位:Lithosphere Research Centre, Institute of Geology, CAGS, Beifing 100037, China;Eearthprobe and Geodynamics Open Laboratory of CAGS, Beijing 100037, China 
刊 名:地质学报(英文版)  SCI
英文刊名:ACTA GEOLOGICA SINICA 
年,卷(期):2009 83(4) 
分类号:P3 
关键词:the Longmen Shan   deep seismic sounding profile   upper crust structure   Wenchuan Earthquake  
机标关键词:Adjacent AreasUpper Crust Structurethe Tibetan Plateauvelocityeastern Tibetan Plateauupper crust structuredeep seismic soundingenergy accumulationwestern Sichuanrelationshipthrust beltanalyzingprofilesfocusesstudypaperfounddeptharea 
基金项目:International Sciences and Technology cooperation,Sciences and technology research of public welfare trades,the key innovation project for sciences and technology of ministry of land and resources,the Basic outlay of scientific research work from Ministry of Science and Technology of the People's Republic of China,国家自然科学基金,国家自然科学基金 
下一篇:Relationship between Crustal 3D Density Structure and the Earthquakes in the Lon
上一篇:Seismogenic Structure around the Epicenter of the May 12, 2008 Wenchuan Earthqua
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