【摘要】 2004年12月26日发生在印尼苏门答腊岛附近印度洋海域的地震震级高达9.0(MW9.0),引起了巨大海啸,造成了几十万人的伤亡,至今全世界的人们还记忆犹新。美国地质调查局把此次地震列为百年以来全球第五大地震。时隔3个月,2005年3月29日在印尼又发生了MS8.7地震,5月17日再次发生了7.1级地震。北京工业大学地震研究所在这几次印尼地震前都收到次声波异常信号,本文对这些异常信号进行了初步的分析与探讨。更多还原

【Abstract】 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.更多还原