Pdif震相的记录特征

英文篇名：The Recording character of Pdif phase
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：许健生 ; 隗永刚 ; 张淑珍
英文作者：Xu Jiansheng~(1) ; 2)) ; Wei Yonggang~(1) ; 2))and Zhang Shuzheng~(3) ; 4)) 1)Beijing Seismic Station of Institute of Geophysics ; China Earthquake Administration ; Beijing 100095 ; China 2)Beijing Baijiatuan Earth Since State Geophysical Observatory ; Beijing 100095 ; China 3)Lanzhou Observatory of Earthquake Administration ; Gansu Province 730046 ; China 4)Lanzhou State Geophysical Observatory ; Gansu Province 730046 ; China
中文关键词：Pdif震相 ; 记录特征 ; CDSN
英文关键词：Pdif phase ; recording character CDSN
出版日期：2011-08-25
机构：中国地震局地球物理所北京地震台;北京白家疃地球科学国家野外科学观测研究站;兰州观象台;兰州地球物理国家野外科学观测研究站;
年：2011
期：04
出版单位：地震地磁观测与研究

摘要

通过对北京地震台1990—2008年间63个极远震记录的分析,简要讨论Pdif震相在CDSN宽频带数字仪器上的记录特征。目前,北京地震台观测到的Pdif震相的记录范围约101.87°172.18°,最小震级为6.0级,最浅震源深度为9 km,最深为631.3 km。所得结果有助于提高地震速报能力和积累震相分析经验,有助于核幔边界物理性质的认识。
In this paper,the recording character of Pdif phase of 63 far-teleseism observations recorded by broad band digital seismic instrument of CDSN Beijing Seismic Station during 1990- 2008 is analyzed.At present,the Pdif phase was recorded among epicenter distance is 101.87°-172.8°.The minimum magnitude is about 6.0.The minimum of earthquake source depth is about 9km,the maximum of earthquake source depth is about 631.3 km.The result was very useful to enhance the earthquake analysis ability and accumulate analysis experience. It is very helpful to understand physics character about mantle-core border of the earth.

引文

方家福.中国地震台网记录到震中距大于1 60度的衍射波[J].国际地震动态,1987,5:38．
    郭瑛.关于△≥140°的地震衍射波Pdif[J].地震地磁观测与研究,1989,10(4) :27-30．
    唐燕娟.对P波衍射波Pdif震相记录范围的讨论[J].地震地磁观测与研究,1997,18(2) :32-36．
    赵荣国.中国763长周期台网观测△=175． 6°的幔核界面衍射波[J].国际地震动态,1987,3:14-16．
    B.L.N.Kennett IASPEI 1991地震走时表[M].北京:地震出版社,1993;108-130．