地震地质 ›› 2002, Vol. 24 ›› Issue (4): 601-605.

• 专题综述 • 上一篇    下一篇

城市活动断裂探测和地震危险性评价问题

邓起东   

  1. 中国地震局地质研究所, 北京, 100029
  • 收稿日期:2002-11-21 修回日期:2002-11-25 出版日期:2002-12-03 发布日期:2009-10-26
  • 作者简介:邓起东,男,1938年生,1961年毕业于中南矿冶学院地质系,先后就职于中国科学院地质研究所和国家地震局地质研究所,曾任国家地震局地质研究所副所长和学位委员会主任,现任研究员,博士生导师,中国地质学会和中国地震学会理事,地震地质专业委员会主任,现在主要研究方向为活动构造和地球动力学,电话:010-62009027,E-mail:qddeng@yahoo.com.cn.
  • 基金资助:
    国家发展计划委员会高新技术项目(2001977)资助.

EXPLORATION AND SEISMIC HAZARD ASSESSMENT OF ACTIVE FAULTS IN URBAN AREAS

DENG Qi-dong   

  1. Institute of Geology, China Seismological Bureau, Beijing 100029, China
  • Received:2002-11-21 Revised:2002-11-25 Online:2002-12-03 Published:2009-10-26

摘要: 城市范围内直下型活动断裂突发错动产生的直下型大地震,直接威胁城市和人民生命财产的安全.城市活动断裂探测和地震危险性评价是为城市减灾服务的一项系统工程,也是活动构造研究面临的一项新的工作.这一工作的核心是要解决城市范围内的断裂定位、断裂最新活动、断裂的深部背景、断裂的地震危险性和地面错动危险性及减灾对策.为了更好地理解这一问题,作者用"有没有、活不活、深不深,震不震,错不错,好对策"这6句话来表示其核心内容.文中对这些问题作了具体的说明.

关键词: 活动断裂, 地震危险性, 城市

Abstract: Displacements along active faults buried directly beneath major cities create devastating earthquakes that seriously threaten the safety of human lives and properties. Exploration and seismic hazard assessment of active faults in urban areas are thus an important systematic engineering for disaster mitigation in major cities. It is also a new field for active tectonic studies. The kernel of this work includes determining of the exact location of active faults, dating the ages of last tectonic activity, relating the shallow level faults to structures in the crustal depth, assessing seismic hazard and potential for surface offsets, and formulating countermeasures for disaster mitigations. We use the following simple phrases to express these key scientific problems: Where are the faults? Are they active? How deep are they? Will they create earthquake? Will they form surface offsets? What are the countermeasures? This paper explains these key scientific problems in detail.

Key words: active fault, seismic hazard assessment, urban areas

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