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地震 ›› 2024, Vol. 44 ›› Issue (1): 185-188.doi: 10.12196/j.issn.1000-3274.2024.01.015

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2023年12月18日甘肃积石山6.2级地震震源机制解

王勤彩, 罗钧, 陈翰林, 孟霖鑫   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2023-12-21 修回日期:2023-12-21 出版日期:2024-01-31 发布日期:2024-03-21
  • 作者简介:王勤彩(1966-), 女, 河北石家庄人, 研究员, 主要从事地震学研究。

Focal Mechanism for the December 18, 2023, Jishishan MS6.2 Earthquake in Gansu Province

WANG Qin-cai, LUO Jun, CHEN Han-lin, MENG Lin-xin   

  1. Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China
  • Received:2023-12-21 Revised:2023-12-21 Online:2024-01-31 Published:2024-03-21

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摘要： 使用区域台网资料, 采用CAP方法反演了2023年12月18日甘肃省积石山6.2级地震的震源机制解, 结果显示, 该地震为逆冲型地震, 与GCMT、 GFZ和USGS的震源机制解基本一致。 震源机制解节面Ⅱ的走向与积石山东缘断裂大致相同。

关键词: 2023年积石山6.2级地震, 震源机制解

Abstract: The Cut-And-Paste (CAP) method is used to invert the focal mechanism solution of the MS6.2 earthquake that occurred on December 18, 2023, in Jishishan, Gansu Province, using regional network data. The result demonstrates that the earthquake is of the thrust type, which is consistent with the solutions provided by the USGS, GFZ, GCMT. The strike of fault plane II is in good agreement with the eastern margin fault of Jishishan.

Key words: The 2023 Jishishan MS6.2 earthquake, Focal mechanism

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