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太原地震台记录的四川汶川地震震相分析

Analysis of Sichuan Wenchuan earthquake phase recorded by Taiyuan Seismic Station

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【Author】 Meng Caiju~(1),2)),Yang Shiying~(1),2)),Zhao Chunhua~(1),2)),Jin Yuzhen~(1),2)) and Huang Chunling~(1),3))1) Taiyuan Seismic Station, Shanxi Province 030025, China2) Taiyuan Reference Seismological Station of Earthquake Administration of Shanxi Province, Shanxi Province 030025, China3) Xiaxian Seismic Station, Shanxi Province 044400, China

【机构】太原基准地震台； 030025；太原大陆裂谷动力学国家野外科学观测研究站；夏县地震台； 044400；

【摘要】四川汶川系列地震距太原基准地震台约1000 km,介于近震与远震之间,震相特殊,识别困难。本文通过对汶川主、余震和四川其他地区远震波形的对照,及对主要震相周期、幅度及波形特点的分析,认为PN、SG两个震相是太原地震台记录四川汶川地震的主要定位震相。更多还原

【Abstract】 Wenchuan earthquakes, in Sichuan Province, occurred about 1 000 km away from Taiyuan Seismic Station. Since the epicenter distance is in the middle point of near shock and distant shock, the phases are hard to be identified. In this paper, we compare the waveform of main shock and after shocks of Wenchuan earthquake with those of other teleseismic earthquakes occurred in Sichuan Province, and analyze the characteristics of period, amplitude and waveform of main phases. We found that the PN and SG phases are the main phases which can be used for the location of Wenchuan earthquake in Taiyuan Seismic Station.更多还原

【关键词】四川汶川地震；太原地震台；震相分析；
【Key words】 Wenchuan earthquake in Sichuan Province； Taiyuan Seismic Station； phase analysis；

【文献出处】地震地磁观测与研究 ,Seismological and Geomagnetic Observation and Research , 编辑部邮箱 ,2009年06期

【分类号】P315.3
【下载频次】7

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