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[1]袁伏全,黄 浩,蔡丽雯,等.2019年甘肃夏河MS5.7地震震源机制解和震源深度确定[J].地震研究,2021,(04):521-528.
 YUAN Fuquan,HUANG Hao,CAI Liwen,et al.Determination of the Focal Mechanism and Focal Depth of the Xiahe, Gansu MS5.7 Earthquake in 2019[J].Journal of Seismological Research,2021,(04):521-528.
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2019年甘肃夏河MS5.7地震震源机制解和震源深度确定(PDF/HTML)

《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:
期数:
2021年04期
页码:
521-528
栏目:
出版日期:
2021-11-10

文章信息/Info

Title:
Determination of the Focal Mechanism and Focal Depth of the Xiahe, Gansu MS5.7 Earthquake in 2019
作者:
袁伏全1黄 浩1蔡丽雯1李启雷1赵燕杰1刘兴盛2
(1.青海省地震局,青海 西宁810001; 2.青海省应急管理厅信息中心,青海 西宁810001)
Author(s):
YUAN Fuquan1HUANG Hao1CAI Liwen1LI Qilei1ZHAO Yanjie1LIU Xingsheng2
(1.Qinghai Earthquake Agency,Xining 810001,Qinghai,China;2.Emergency Management Department of Qinghai Province,Xining 810001,Qinghai,China)
关键词:
夏河MS5.7地震 CAP方法 震源深度 逆时成像
Keywords:
the Xiahe earthquake CAP method focal depth time-reversal imaging technique
分类号:
P315.3
DOI:
-
摘要:
为了准确测定2019年甘肃夏河MS5.7地震的震源深度,利用青海、甘肃和四川数字地震台网宽频带数字地震波形资料,采用CAP方法和区域速度模型反演夏河地震震源机制,并采用逆时成像技术进一步约束了此次地震的震源深度。结果表明,夏河MS5.7地震是一次逆冲兼走滑型地震,震源深度为5.4 km; 基于遥感解译和野外调查新发现的夏河断裂可能是甘肃夏河5.7级地震的发震构造,即节面Ⅰ(走向305°/倾角52°/滑动角50°)为发震断层面。
Abstract:
In order to accurately determine the focal depth of the Xiahe,Gansu MS5.7 earthquake,we used the broadband waveforms from Qinghai Seismic Networks,Gansu Seismic Networks and Sichuan Seismic Networks to invert the focal mechanism of this earthquake on the basis of Cut-and-Paste(CAP)method and the regional velocity model.We further delimited the earthquake's depth by the time-reversal imaging technique.We find that this earthquake is a thrust and strike slip one,and its focal depth is about 5 km.And its seismogenic fault is the Xiahe fault,which is newly discovered by remote sensing interpretation and field investigation,i.e.the planeⅠ(strike 305°/dips 52°/rake 50°)could be the seismogenic fault.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2021-03-15
基金项目:地震科技星火计划(XH21036Y)、青海省重点研发与转化计划资助项目(2021-SF-151)和青海省地震局地震科学基金(2021A02)联合资助.

更新日期/Last Update: 2021-11-10