Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System

DU Hang; ZHENG Jiangrong; JIANG Haolin; WANG Jun; NI Haoqi; LI Ziye

doi:10.13409/j.cnki.jdpme.20240221002

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Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System

更新时间：2024-06-26

- Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System
- Journal of Disaster Prevention and Mitigation Engineering Vol. 44, Issue 3, Pages: 730-734(2024)
- 作者机构：
  
  江苏省地震局，江苏南京 210014
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20240221002
  CLC： P315.3
- Received：21 February 2024，
  
  Revised：2024-04-28，
  
  Published：25 June 2024
- 稿件说明：
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杜航,郑江蓉,江昊琳等.国家地震烈度速报江苏子系统震源机制解产出分析[J].防灾减灾工程学报,2024,44(03):730-734.

DU Hang,ZHENG Jiangrong,JIANG Haolin,et al.Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(03):730-734.
杜航,郑江蓉,江昊琳等.国家地震烈度速报江苏子系统震源机制解产出分析[J].防灾减灾工程学报,2024,44(03):730-734. DOI： 10.13409/j.cnki.jdpme.20240221002.

DU Hang,ZHENG Jiangrong,JIANG Haolin,et al.Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System[J].Journal of Disaster Prevention and Mitigation Engineering,2024,44(03):730-734. DOI： 10.13409/j.cnki.jdpme.20240221002.

摘要

国家地震烈度速报与预警系统江苏子系统震源机制解参数速报集成了TDMT_INV方法，可直接读取震相进行震源机制解反演计算并产出。为验证该方法获得震源机制解的准确性，选取2024年1月17日江苏东台3.0级地震和2023年12月7日江苏赣榆海域3.8级地震这2次3级以上地震，采用TDMT_INV、CAP和FOCMEC方法计算其震源机制解，分析三种方法所得结果差异。东台3.0级地震位于江苏预警站网网内，三种方法都可获得较为稳定的震源机制解结果；赣榆海域3.8级地震位于江苏预警站网网外，TDMT_INV方法仍可获得较为稳定的震源机制解结果。

Abstract

The Jiangsu sub-project of the National Earthquake Intensity Quick Reporting and Early Warning System integrates the TDMT_INV method for rapid reporting of source mechanism parameters

enabling direct reading of seismic phases for inversion calculation and production of source mechanism solutions. To verify the accuracy of this method

this paper selected two earthquakes of magnitudes 3 or above: the 3.0-magnitude earthquake in Dongtai

Jiangsu on January 17

2024

and the 3.8-magnitude earthquake in Ganyu Sea

Jiangsu on December 7

2023. The TDMT_INV

CAP

and FOCMEC methods were utilized to calculate their source mechanism solutions and to analyze the differences in results obtained from the three methods. The Donghai 3.0-magnitude earthquake

located within the Jiangsu early warning network

produced relatively stable source mechanism solutions across all three methods. Despite the Ganyu Sea 3.8-magnitude earthquake occurring outside the Jiangsu early warning network

the TDMT_INV method still produced relatively stable source mechanism solutions.

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references

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Inversion for the Focal Mechanisms of the 2021 Dafeng Sea M5.0 Earthquake and Tianning M4.2 Earthquake Using FOCMEC and CAP Methods

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