【摘要】 对昆明地震台数字地震仪记录的2010年2月27日智利M_S 8.8地震的震相进行分析,与格尔木、高台、呼和浩特、成都、银川、兰州、西安等7个地震台记录进行对比,提出智利地震的记录特征、分析难点,并将JB表中Pdif波走时曲线的截止距离从150°延伸到177.8°。更多还原

【Abstract】 We analyze the waveform of the M_S8.8 Chile earthquake occurred on February 27,2010, which is recorded by the digital seismometers at Kunming Seismic Station,and contrast it with those recorded by other seismic stations in China such as Geermu,Gaotai,Hohhot, Chengdu,Yinchuan,Lanzhou,and Xi an.Thus,after finding the features of the waveform of the Chile earthquake,we put forward some methods for identifying the difficult seismic phases of the earthquakes in Chile.In addition,we suggest that the maximum distance which the Pdif-phase can travel-defined as 150°in the Jeffreys-Bullen Travel Time Table-can be expanded to 177.8°.更多还原