sPn震相的多台同时测定法
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
利用数字台网观测技术的优势,根据sPn与Pn震相到时差与震中距无关,以及振幅和周期都比Pn大的运动学和动力学特征,提出将震中距不同的台站的Pn震相对齐后同时测定多台的sPn震相,进而计算出该地震的震源深度。这种分析和测定方法简捷准确,可在台网的日常近震分析中推广应用。
In this paper, using the technological advantage of the digital seismic network and based on the kinematics and kinetics characteristics that the arrival time difference between sPn and Pn is independent of epicentral distance and the amplitude and period of sPn are larger than those of Pn, we presented a method for the simultaneous determination of sPn phase in multiple station with different epicentral distance by aligning the Pn arrivals. And then we can calculate the focal depth. This method of analysis and determination is simple and accurate, so it can be extend to the regional earthquake analyzing in the seismic network daily work.
引文
陈培善.2004.全球大震和中国及邻区中强震地震活动[J].地震学报,26(3):340~341
    冯浩、高艳玲.2004.全球大地震及中国4级以上地震目录[J].地震,24(2):136~137
    房明山,杜安陆等.1995.用sPn震相测定震源深度[J].地震地磁观测与研究,16(5):13~18
    高原,周蕙兰等.1997.测定震源深度的意义的初步讨论[J].中国地震,13(4):321~329
    任克新,邹立晔等.2004.用sPn计算内蒙地震的震源深度[J].地震地磁观测与研究,25(3):24~31
    时振梁,张少泉等.1992.地震工作手册[M].北京:地震出版社,34~35
    KindR.1979.ObservationofsPnfromSwabianAlbEarthquakesattheGRFArray[J].JournalofGeophysics,45,337~340

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心