| 2017年6月3日阿拉善左旗5.0级地震震源深度测定 |
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| 引用本文： | 郝美仙,宋晓燕,徐岩,翟浩. 2017年6月3日阿拉善左旗5.0级地震震源深度测定[J]. 地震地磁观测与研究, 2018, 39(2): 18-24. DOI: 10.3969/j.issn.1003-3246.2018.02.003 |
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| 作者姓名： | 郝美仙 宋晓燕 徐岩 翟浩 |
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| 作者单位： | 中国呼和浩特 010010 内蒙古自治区地震局 |
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| 基金项目： | 内蒙古自治区地震局局长基金课题（项目编号：2017JC04） |
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| 摘 要： | 2017年6月3日18时11分内蒙古阿拉善左旗（37.99° N，103.56° E）发生5.0级地震，利用近震深度震相sPL测定法、CAP波形反演法、sPn与Pn震相走时差法，进行震源深度精确测定。研究结果表明，3种方法测得的该地震震源深度基本一致，分布范围为8.5—11 km，表明该地震发生在上地壳。
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| 关 键 词： | sPL震相 CAP波形反演 sPn与Pn震相走时差 震源深度 |
The determination of focal depth for Alagxa Left Banner M 5.0 earthquake on June 3, 2017 |
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| Hao Meixian,Song Xiaoyan,Xu Yan,Zhai Hao. The determination of focal depth for Alagxa Left Banner M 5.0 earthquake on June 3, 2017[J]. Seismological and Geomagnetic Observation and Research, 2018, 39(2): 18-24. DOI: 10.3969/j.issn.1003-3246.2018.02.003 |
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| Authors: | Hao Meixian Song Xiaoyan Xu Yan Zhai Hao |
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| Affiliation: | Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010010, China |
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| Abstract: | The Alagxa Left Banner, Inner Mongolia, M5 earthquake (37.99° N, 103.56° E) occurred at 18:11 on June 3, 2017. In this paper, the focal depth of the earthquake is accurate determined using the sPL phase method, CAP waveform inversion method, and sPn and Pn phase travel time difference inversion method. The results show that the depth of the earthquake from 3 methods are basically consistent, and the depth distribution range of the source is 8.5-11 km, indicating that the earthquake occurred in the upper crust. |
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| Keywords: | sPL seismic phase CAP waveform inversion sPn and Pn travel-time difference focal depth |
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