中国及邻区现代构造应力场的区域特征

鄢家全, 时振梁, 汪素云, 环文林

中国及邻区现代构造应力场的区域特征

鄢家全, 时振梁, 汪素云, 环文林

国家地震局地球物理研究所

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- 发布日期: 2011-08-31

SOME FEATURES OF THE RECENT TECTONIC STRESS FIELD OF CHINA AND ENVIRONS

Yan Jia-quan, Shi Zhen-liang, Wang Su-yun, Huan Wen-lincmult

Institute of Geophysics, State Seismological Bureau

摘要

摘要: 本文根据我国及邻区40年来(1937—1977年)173次浅源地震的断层面解结果以及其他资料, 讨论了我国及邻区普遍存在着的以水平压应力为特征的现代构造应力场.其区域特征表现为:(1)华南地区以北西西走向的水平压应力为主;(2)华北以及朝鲜和西南日本是以北东东走向的水平压应力和北北西走向的水平张应力为其特点;(3)青藏高原的大部分直到蒙古西部均处在近南北到北东走向的水平压应力作用之下, 兰州amp;amp;mdash;察隅一线以东的压应力呈现有规则的向东南偏转.西天山地区具有北西向压应力.我国大陆板块内部的现代构造应力场与周围岩石圈板块运动和上地幔的物质运动有关.

Abstract: Based on the results of focal mechanism solutions for 173 shallow earthquakes occurred during the past 40 years (1937—1977) in China and its environs and some other data, the predominantly horizontal eompressive character of the recent tectonic field existing in this part of the world has been discussed. It shows that:(1) In south China, the prevailing horizontal eompressive stress field is NWW;(2) In North China, Korea and Southwest Japan, NEE horizontal eompressive stress field and NNW horizontal tensional stress field prevail;(3) For the main part of the Chinghai-Tibet Plateau extending as far as West Mongolia, it is under the horizontal compressive stress field, NS to NE in directions. East of the Lanzhou-Chayu line, the stress field deviates toward the SE. In the West Tianshan region, the eompressive stress becoms NW. The intraplate tectonic stress field is thought to be related to the movement of the surrounding lithosphere and that of the upper mantle.

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参考文献(1)

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文章访问数: 1912
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中国及邻区现代构造应力场的区域特征

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出版历程

SOME FEATURES OF THE RECENT TECTONIC STRESS FIELD OF CHINA AND ENVIRONS

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出版历程

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