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中国大陆地震构造特点及其在地震危险性预测中的作用
引用本文:楚全芝,邓志辉,杨竹转.中国大陆地震构造特点及其在地震危险性预测中的作用[J].地球物理学进展,2007,22(2):395-402.
作者姓名:楚全芝  邓志辉  杨竹转
作者单位:中国地震局地质研究所, 北京100029
基金项目:国家自然科学基金项目(40372131)资助
摘    要:地震构造是地震孕育和发生的载体,也是地震危险性预测的基础.中国大陆地震构造具有鲜明的分区特征.不同地区的地震活动都有其自身的强弱变化,很难用统一的活动期或平静期来涵盖.地震活动强度与各个区域的断裂活动水平有较好的一致性.如东、西部断裂活动水平相差约一个数量级,大震发生的频度也相差一个数量级.地震不但与活断层有关,而且与地震构造块体的关系也相当密切.前兆异常和地震不是因果关系,是伴生或孪生的关系,它们都是构造活动的产物.本文从中国大陆地震构造环境出发,研究了典型地震构造块体和主要地震断裂带与地震危险性的关系.结果表明:中国大陆未来十年或更长一段时间大震活动的地区主要在西部.重点应该注意塔里木块体沿南北两侧边缘断裂带由西向东发展的趋势.在川滇地区应重点关注鲜水河-安宁河-小江断裂带及毗邻地区.东部可能会有多次中强地震发生,发震地点可能与渤海-张家口-河套地震断裂带和郯庐地震断裂带有关.

关 键 词:中国大陆  构造块体  地震断裂带  地震预测
文章编号:1004-2903(2007)02-0395-08
收稿时间:2006-11-09
修稿时间:2007-02-28

Seismo-tectonic features and their effects of the earthquake prediction in China-Mainland
CHU Quan-zhi,DENG Zhi-hui,YANG Zhu-zhuan.Seismo-tectonic features and their effects of the earthquake prediction in China-Mainland[J].Progress in Geophysics,2007,22(2):395-402.
Authors:CHU Quan-zhi  DENG Zhi-hui  YANG Zhu-zhuan
Institution:Institute of Geology, China Earthquake Administration, Beijing 100029, China
Abstract:eismo-tectonics is the carrier in which earthquakes develop and occur,and is also the foundation of earthquake prediction.Seismo-tectonics in China-Mainland is characterized by the apparent division.They have own law on seismic activity in every division,so it is difficult for those divisions to be included in the unified active or calm periods of earthquakes.The seismic activity is consensus with the fault activity in every region.For example,Eastern and Western China are different from each other by about one order in activity of the faults and by one order in frequency of the great earthquakes.Earthquakes are not only related to active faults,but they are also related closely to seismo-tectonic blocks.There is no causality between precursor anomaly and earthquakes.There may be the accompanying or twin relation between them.Both are the result of active tectonics.In this paper,we studied the relation of typical seismo-tectonic block,mainly seismic rupture and seismic fatalness.The result shows that major earthquakes mainly occur in the western part of China in the future within some period,We should note especially that earthquakes may progress from the west to the east along margin fault zones in the south and north margins of Tarim block.In Sichuan Province and Yunnan Province,Xianshuihe-Anninghe-Xiaojiang fault zone and its adjacent area should be concerned.In the eastern part of China-Mainland,there may be some middle earthquakes occurring along Bohai-Zhangjiakou-Hetao fault zone and Tanlu fault zone.
Keywords:China-Mainland  seismo-tectonic block  seismo-fault  earthquake prediction
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