核震相在数字仪上的记录特征

英文篇名：The characteristics of the core phases on the records of digital seismographs
中文刊名：地震地磁观测与研究
英文刊名：Seismological and Geomagnetic Observation and Research
作者：王庆民 ; 沈得秀 ; 李滔
英文作者：Wang Qingmin~ 1) ; Shen Dexiu~ 2) and Li Tao~ 1) 1)Earthquake Administration of Qinhai Province ; Xining 810001 ; China 2)Insitute of Geology ; China Earthquake Administration ; Beijing 100029 ; China
中文关键词：核震相 ; PKPab ; PKPbc ; PKPdf ; 数字仪 ; 记录特征
英文关键词：core phase ; PKPab ; PKPbc ; PKPdf ; digital seismograph ; characteristics on records
出版日期：2006-12-25
机构：青海省地震局,中国地震局地质研究所,青海省地震局,
年：2006
期：06
出版单位：地震地磁观测与研究

摘要

通过几个典型震例,详细分析了震中距在145°至160°之间,核震相PKP的3个分支(PKPab、PKPbc、PKPdf)在数字化仪上的记录特征。指出中国地震台网在记录发生在南美洲的极远震时,能清楚地记录到PKP震相的3个分支,同时分析了这些震相在数字化地震仪上的记录特征,为今后台站人员在极远震震相的分析上作了一些有益的尝试。进而指出,分析PKP震相的3个分支,将有助于提高台站震相分析的精度,也将有助于整个中国地震台网的定位精度。
On the records of digital seismographs, the characteristics of three branches (PKPab, PKPbc, PKPdf) of the core phase PKP, with their epicenter in the range of 145°to 160°, were analyzed in details on basis of several examples. It is indicated that the three branches of the PKP phase could be well recorded by China seismic network when a far-teleseism occurred in South America. Their characteristics were also analyzed, providing some helpful attempts on analysis of far-teleseimic phases for people on seismic stations. It is indicated that the analysis of the three branches of PKP phase will be helpful to improve the accuracy of phase analysis and earthquake location of the entire China seismic network.

引文

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Bormann P.2002.New Mannual of Seismological Observatory Practice[M].GeoForschungsZentrum Potsdam