由同震形变理论计算地震烈度分布的讨论

英文篇名：Discussion on the Seismic Intensity Distribution Calculated by Co-seismic Deformation Theory
中文刊名：地震
英文刊名：Earthquake
作者：张晁军 ; 李卫东 ; 李大辉 ; 林捷 ; 侯燕燕 ; 张爱武 ; 陈会忠
英文作者：ZHANG Chao-jun1 ; LI Wei-dong1 ; LI Da-hui1LIN Jie1 ; HOU Yan-yan1 ; CHEN Hui-zhong2(1.China Earthquake Network Center ; Beijing ; 100045 ; China ; 2.Institute of Earthquake Science ; CEA ; Beijing 100036 ; China)
中文关键词：地震三要素 ; 断层参数 ; 同震形变 ; 绝对同震位移 ; 地震烈度
英文关键词：Three elements of earthquake ; Fault parameter ; Co-seismic deformation ; Seismic intensity
出版日期：2011-01-15
机构：中国地震台网中心;中国地震局地震预测研究所;
年：2011
期：01
出版单位：地震

摘要

本文以海地7.3级地震和汶川8.0级地震为例,介绍了同震位移烈度方法,即在已知地震三要素、断层走向、倾向和滑动方向的情况下,可通过计算绝对同震位移来确定地震烈度分布。研究表明,由绝对同震位移计算的地震烈度分布与实际地震烈度有很好的一致性,特别是在极震区其对应效果更好。尽管这种计算结果有时与实际情况有一定出入,但这对震后快速做出灾害评估和制定救灾策略有重要作用。特别是在强地震发生的地区由于台站稀疏和大地震短时间资料数据不能及时获取的情况下,本方法更具有一定的优势。
In this paper,we introduce the method by using co-seismic displacement to calculate seismic intensity as applied to Haiti M7.3 earthquake and Wenchuan M8.0 earthquake examples.Under the condition of knowing the three elements of earthquake,fault strike,dip and slip direction,we could determine the distribution of seismic intensity by calculating the absolute co-seismic displacement.This study shows that intensity distribution map calculated by the absolute co-seismic displacement is in good agreement with the actual seismic intensity map,especially in the highly seismic area the results corresponds better.While such calculations are sometimes combined with a certain access to the actual situation,it would play an important role in rapid disaster assessment and relief dicision-making after earthquakes.In particular,this method has a more unique advantage in the region where strong seismic stations are sparse and in the case of not getting timely information and data shortly after a large earthquake.

引文

[1]陈会忠,侯燕燕,王东斌,等.汶川地震综合参数处理与地震台网救灾作用研究[J].地震,2009,29(1):207-215.
    [2]Muramatsu I.Relationship between seismic intensity and earthquake magnitude[J].Research Reportof the Faculty of Education,Gifu University,1969,4:168-174.
    [3]张勇,冯万鹏,许力生,等.2008年汶川大地震的时空破裂过程[J].中国科学D辑(地球科学),2008,38(10):1186-1194.
    [4]国家地震局震害防御司.地震工作手册[M].北京:地震出版社,1990.
    [5]Peter Borman.IASPEI,New manual of seismological observatory practice:Volume 1,Apter 3,Magnitude of seismic event[M].GeoForschungsZentrum Potsdam,2002.
    [6]Shebalin N V.Seismic Scale and Methods of Measuring Earthquake Intensity[J].Foci of StrongEarthquakes in the USSR,1978,3:87-109.
    [7]Wang R.Francisco Lorenzo Martin,Frank Roth.PSGRN/PSCMP-a newcode for calculating co-andpostseismic deformation,geoid and gravity changes based on the viscoelastic-gravitational dislocationtheory[J].Computers&Geosciences,2006,32:527-541.
    ①http://earthquake.usgs.gov/earthquakes/shakemap/
    ①http://www.ceic.ac.cn/
    ①http://www.cea.gov.cn/manage/ht ml/