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《Recent Developments In World Seismology》 2005-12
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Analysis of Abnormal Signals of Infrasound Before the Sumatra Strong Earthquakes

Xia Yaqin,Wei Shuhong,Chen Weisheng and Li Junzhi (Institute of Earthquake Prediction in Beijing University of Technology,Beijing,100022,China,  
A strong earthquake of M_S9.0 occurred in the Indian Ocean near Sumatra,Indonesia,on 26 Dec.2004.It produced a strong tsunami which caused hundreds of thousands of people′s casualties.The earthquake is regarded as the fifth strongest in the world in 100 years.Three months later,the other two earthquakes in magnitude of M_S8.7 and of M_S7.1 occurred on 29 March and on 17 May 2005 respectively.Before those earthquakes,infrasound abnormal signals were received in the Institute of Earthquake Prediction in Beijing University of Technology.In this paper we analyzed the signals and put forward some opinions.
【CateGory Index】: P738.4
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