地球科学进展 ›› 2004, Vol. 19 ›› Issue (3): 368 -372. doi: 10.11867/j.issn.1001-8166.2004.03.0368

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Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7.8 Central Kunlun Earthquake,China
LINAi-ming   
  1. Institute of Geosciences,Faculty of Science,Shizuoka University,836 Ohya,Shizuoka 422-8529,Japan
  • 收稿日期:2004-04-09 出版日期:2004-12-20
  • 通讯作者: LIN Ai-ming (1959-),professor,interest:Active tectonism and earthquake rupture dynamices and mechanics. E-mail:E-mail: Slin@ipc.shizuoka.ac.jp

Relationship between the Pre-existing Active Kunlun Fault and Co-seismic Surface Ruptures Produced by the 2001 Mw 7.8 Central Kunlun Earthquake,China

LINAi-ming   

  1. Institute of Geosciences,Faculty of Science,Shizuoka University,836 Ohya,Shizuoka 422-8529,Japan
  • Received:2004-04-09 Online:2004-12-20 Published:2004-06-01

Field investigations allow to constrain the co-seismic surface rupture zone of ~400km with a strike-slip up to 16.3 m associated with the 2001Mw 7.8 Central Kunlun earthquake that occurred along the western segment of the Kunlun fault,northern Tibet.The co-seismic rupture structures are almost duplicated on the pre-existing fault traces of the Kunlun fault.The deformational characteristics of the co-seismic surface ruptures reveal that the earthquake had a nearly pure strike-slip mechanism.Theg eologic and topographice vidence clearly shows that spatial distributions of the co-seismic surface ruptures are re-stricted by the pre-existing geological structures of the Kunlun fault.

Field investigations allow to constrain the co-seismic surface rupture zone of ~400km with a strike-slip up to 16.3 m associated with the 2001Mw 7.8 Central Kunlun earthquake that occurred along the western segment of the Kunlun fault,northern Tibet.The co-seismic rupture structures are almost duplicated on the pre-existing fault traces of the Kunlun fault.The deformational characteristics of the co-seismic surface ruptures reveal that the earthquake had a nearly pure strike-slip mechanism.Theg eologic and topographice vidence clearly shows that spatial distributions of the co-seismic surface ruptures are re-stricted by the pre-existing geological structures of the Kunlun fault.

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