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发震断层对微、宏观震中偏离的影响分析:以新疆地区为例

兰晓雯 田家勇 谢周敏 姜文亮 陆鸣 时振梁

现代地质2011,Vol.25Issue(1):114-121,8.
现代地质2011,Vol.25Issue(1):114-121,8.

发震断层对微、宏观震中偏离的影响分析:以新疆地区为例

Analysis on the Impact of Seismogenic Fault on the Micro-and Macro-epicenter Deviation:Taking Xinjiang Area as an Example

兰晓雯 1田家勇 2谢周敏 1姜文亮 1陆鸣 1时振梁1

作者信息

  • 1. 中国地震局,地壳应力研究所,北京,100085
  • 2. 中国地质大学,地球物理与信息技术学院,北京,100083
  • 折叠

摘要

Abstract

How to estimate the micro- and macro-epicenter deviation is a key problem to earthquake emergency and rescue response. Taking Xinjiang area as an example, this study investigated the relationship between micro- and macro-epicenter deviation and seismogenics structures, and provided a new method for the fast determination of possible macro-epicenter based on the micro-epicenter and seismogenics structures for the earthquakes Ms≥6. 5. There are 3 types of faults in Xinjiang, including the thrust fault, the thrust-slip fault and the strikeslip fault. The deviation of the ideal micro-epicenter direction depends on the nature of rupture ( such as unilateral rupture, bilateral rupture ), so it is difficult to determine the exact location of the ideal micro-epicenter in the seismogenic fault, and it is a certain randomness, but the deviation of the micro- and macro-epicenter is consistent with the overall direction of tectonic stress direction. The macro-epicenter location is located in or near the seismogenic fault in actual application.

关键词

快速估计/宏观震中/微观震中/偏离/断层/发震构造/新疆地区

分类

天文与地球科学

引用本文复制引用

兰晓雯,田家勇,谢周敏,姜文亮,陆鸣,时振梁..发震断层对微、宏观震中偏离的影响分析:以新疆地区为例[J].现代地质,2011,25(1):114-121,8.

基金项目

地震行业科研专项项目(200708047) (200708047)

中国地震局地壳应力研究所基本科研业务专项资金资助项目(ZDJ2007-2 ()

ZDJ2010-2). ()

现代地质

OA北大核心CSCDCSTPCD

1000-8527

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