智利地震震相特征分析
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摘要
对智利地震在温州地震台的记录特征进行分析,对分析方法做阐述。其结论是:可清晰记录智利地震衍射波PDIF震相;PDIF震相波形"弧立",起始平缓,周期较大;利用PDIF、PKP、SKKS、SS等明显震相的到时进行大震速报,可提高大震速报的速度和质量。
In this assay,the recording characteristics of earthquakes in Chile recorded by Wenzhou Seismic Station is analyzed,and the analytical method is also introduced in detail.It is found that if the epicentral distance of earthquakes in Chile equals 168 degree,the diffracted waves of PDIF seismic phase can still be recorded clearly.The recorded characteristics of the waves turn out to be single with gentle slope in the beginning and long period.Using the arriving time of obvious seismic phase such as PDIF,PKP,SKKS,SS to report the earthquakes rapidly is helpful to improve speed and quality of rapid reporting.
In this assay,the recording characteristics of earthquakes in Chile recorded by Wenzhou Seismic Station is analyzed,and the analytical method is also introduced in detail.It is found that if the epicentral distance of earthquakes in Chile equals 168 degree,the diffracted waves of PDIF seismic phase can still be recorded clearly.The recorded characteristics of the waves turn out to be single with gentle slope in the beginning and long period.Using the arriving time of obvious seismic phase such as PDIF,PKP,SKKS,SS to report the earthquakes rapidly is helpful to improve speed and quality of rapid reporting.
引文
国家地震局地球物理研究所.震相走时便查表[M].北京:地震出版社,1980．
李惠智,孙立新,蔡新华.银川台极远震记录特征及其分析处理[J].地震地磁观测与研究,1998,19(6) :18-22．
张诚.地震分析基础[M].北京:地震出版社,1998．
李惠智,孙立新,蔡新华.银川台极远震记录特征及其分析处理[J].地震地磁观测与研究,1998,19(6) :18-22．
张诚.地震分析基础[M].北京:地震出版社,1998．
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