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地震 ›› 2000, Vol. 20 ›› Issue (2): 69-76.

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1990年共和7.0级地震孕震构造动力学模式探讨

马文静, 苏旭, 涂德龙, 都昌庭   

  1. 青海省地震局,青海 西宁 810001
  • 收稿日期:1999-05-12 修回日期:1999-08-16 出版日期:2000-04-30 发布日期:2022-09-26
  • 作者简介:马文静(1964-), 女, 副研究员,主要从事地震预报研究
  • 基金资助:
    中国地震局“九五”科研攻关项目(95-04-03-01-04)部分成果

A preliminary study on seismogeny tectonodynamics model with 7.0 on April 26, 1990 in Gonghe, Qinghai

MA Wen-jing, SU Xu, TU De-long, DU Chang-ting   

  1. Seismological Bureau of Qinghai Province, Xining 810001, China
  • Received:1999-05-12 Revised:1999-08-16 Online:2000-04-30 Published:2022-09-26

摘要: 在分析青海共和地区深浅部地质构造、区域应力场等资料的基础上, 提出了1990年共和7.0级地震孕震的构造动力学模式,即: NWW向至NE向断裂组合孕震,NWW向哇玉香卡-拉干隐伏断裂为发震断裂、NE向隐伏断裂为诱震断裂,NE向区域构造应力的增强为孕震和发震的主要力源。

关键词: 孕震, 发震, 动力学模式, 共和地震

Abstract: Based on the study of deep-seated and shallow geologic structure, regional stress field, and related data, tectonodynamic seismogenic model of Gonghe earthquake(MS 7.0, 1990) is presented. That is NWW-NE faults combination seismogeny model. In this model, NWW Wayuxiangka-lagan buried fault is earthquake-generating one, NE buried fault is induced earthquake one, the increasing of regional tectonic stress is principal force of preparation and occurrence of the earthquake.

Key words: Gonghe earthquake, Seismogeny, Earthquake occurrence, Tectonodyna micmodel

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