地震地磁观测与研究2018，Vol.39Issue(1)：36-40,5.DOI:10.3969/j.issn.1003-3246.2018.01.006
青海大柴旦地方震波形特征分析
Analysis on waveform characteristics of local earthquakes of Dachaidan in Qinghai Province
摘要
Abstract
The earthquakes over M 0.5 in Dachaidan region of Qinghai Province between 2009 and 2015 were relocated by double-difference location method, and the focal depth distribution of regional earthquakes was showed by frequency histogram. Then, according to the double-difference relocation results, the well-record seismic events over M 3.0 of focal depth with high probability in the area are selected as typical examples to analyze the waveform characteristics of local earthquakes. The result shows that, after relocation, the focal depths of about 65％ earthquakes in Dachaidan area are distributed in the range of 6—10 km. The focal depths are shallow and the attenuation of wave trains is fast. The new seismic phase arriving after the direct wave can be preliminarily deduced as reflection wave from the Conrad surface.关键词
大柴旦/双差定位法/地方震/震源深度Key words
Dachaidan/double-difference location method/local earthquake/focal depth引用本文复制引用
李启雷,李玉丽,罗自浩,马丽..青海大柴旦地方震波形特征分析[J].地震地磁观测与研究,2018,39(1):36-40,5.基金项目
青海省地震科学基金(课题编号:2017A07) （课题编号:2017A07）
