地震学报（英文版）2005，Vol.18Issue(1)：43-52,10.
Study on rupture zone of the M=8.1 Kunlun Mountain earthquake using fault-zone trapped waves
Study on rupture zone of the M=8.1 Kunlun Mountain earthquake using fault-zone trapped waves
摘要
Abstract
The observation of the fault-zone trapped waves was conducted using a seismic line with dense receivers across surface rupture zone of the M=8.1 Kunlun Mountain earthquake. The fault zone trapped waves were separated from seismograms by numerical filtering and spectral analyzing. The results show that: a) Both explosion and earthquake sources can excite fault-zone trapped waves, as long as they locate in or near the fault zone; b) Most energy of the fault-zone trapped waves concentrates in the fault zone and the amplitudes strongly decay with the distance from observation point to the fault zone; c) Dominant frequencies of the fault-zone trapped waves are related to the width of the fault zone and the velocity of the media in it. The wider the fault zone or the lower the velocity is, the lower the dominant frequencies are; d) For fault zone trapped waves, there exist dispersions; e) Based on the fault zone trapped waves observed in Kunlun Mountain Pass region, the width of the rupture plane is deduced to be about 300 m and is greater than that on the surface.关键词
fault-zone trapped waves/M=8.1 Kunlun Mountain earthquake/seismic rupture planeKey words
fault-zone trapped waves/M=8.1 Kunlun Mountain earthquake/seismic rupture plane分类
天文与地球科学引用本文复制引用
李松林,张先康,樊计昌..Study on rupture zone of the M=8.1 Kunlun Mountain earthquake using fault-zone trapped waves[J].地震学报（英文版）,2005,18(1):43-52,10.基金项目
Joint Earthquake Science Foundation of China (201001).Contribution No. RCEG200305, Research Center of Exploration Geophysics, China Earthquake Administration. （201001）
