黄骥超, 万永革, 梁倩, 靳志同. 2017年9月墨西哥MS8.2地震震源区构造应力场特征[J]. 华北地震科学, 2018, 36(4): 10-15,62. DOI: 10.3969/j.issn.1003-1375.2018.04.002
引用本文: 黄骥超, 万永革, 梁倩, 靳志同. 2017年9月墨西哥MS8.2地震震源区构造应力场特征[J]. 华北地震科学, 2018, 36(4): 10-15,62. DOI: 10.3969/j.issn.1003-1375.2018.04.002
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HUANG Ji-chao, WAN Yong-ge, LIANG Qian, JIN Zhi-tong. Tectonic Stress Field in the Source Area of the Mexico MS8.2 Earthquake on September 8, 2017[J]. North China Earthquake Sciences, 2018, 36(4): 10-15,62. DOI: 10.3969/j.issn.1003-1375.2018.04.002
Citation: HUANG Ji-chao, WAN Yong-ge, LIANG Qian, JIN Zhi-tong. Tectonic Stress Field in the Source Area of the Mexico MS8.2 Earthquake on September 8, 2017[J]. North China Earthquake Sciences, 2018, 36(4): 10-15,62. DOI: 10.3969/j.issn.1003-1375.2018.04.002
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2017年9月墨西哥MS8.2地震震源区构造应力场特征

Tectonic Stress Field in the Source Area of the Mexico MS8.2 Earthquake on September 8, 2017

    摘要
  • 摘要: 2017年9月8日，墨西哥（15.05°N，93.90°W）发生MS8.2地震，为研究该地区构造应力场，利用Global CMT提供的震源机制解数据，反演得到该地震震源区不同深度的应力场特征。结果表明：0~70 km深度，最大主压应力S1方位由西向东从近NS向逐渐转为NNE-SSW向；70~200 km深度，最大主压应力方位为NE-SW向，一致性较好；200~300 km深度，最大主压应力方位呈近NS向。该区域应力场特征从浅部到深部存在明显变化。

     

    Abstract: An MS8.2 earthquake occurred in Mexico (15.05°N, 93.90°W) on September 8, 2017. We inversed the present-day stress tensor for different sub-areas and depth intervals of study region based on focal mechanisms from Global Centroid Moment Tensor, and obtained stress images of different depth. The stress inversion results indicate that the maximum principal compression stress axes rotate from NS to NNE-SSW in 0~70 km depth from west to east; the maximum principal compression stress axes are NE-SW in 70~200 km depth commonly; the maximum principal compression stress axes are nearly NS in 200~300 km depth. Different depth interval has different stress regime in Mexico region.

     

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