[1]杨海芳,帅向华.断层类型对高烈度区分布的影响研究[J].地震工程与工程振动,2019,39(01):199-205.[doi:10.13197/j.eeev.2019.01.199.yanghf.023]
 YANG Haifang,SHUAI Xianghua.Study of fault type influence on the distribution of high seismic intensity region[J].EARTHQUAKE ENGINEERING AND ENGINEERING DYNAMICS,2019,39(01):199-205.[doi:10.13197/j.eeev.2019.01.199.yanghf.023]
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断层类型对高烈度区分布的影响研究
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《地震工程与工程振动》[ISSN:/CN:]

卷:
39
期数:
2019年01
页码:
199-205
栏目:
论文
出版日期:
2019-02-28

文章信息/Info

Title:
Study of fault type influence on the distribution of high seismic intensity region
作者:
杨海芳1 帅向华2
1. 中国地震局 地震预测研究所, 北京 100036;
2. 中国地震台网中心, 北京 100045
Author(s):
YANG Haifang1 SHUAI Xianghua2
1. Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China;
2. China Earthquake Network Center, Beijing 100045, China
关键词:
破坏性地震高烈度区断层类型分布特点
Keywords:
destructive earthquakehigh seismic intensity regionfault typedistribution characteristics
分类号:
P54
DOI:
10.13197/j.eeev.2019.01.199.yanghf.023
摘要:
本文收集整理了1966年以来震级大于等于6.5的破坏性地震的震害资料,通过分析历史震例数据将6.5—7.9级地震的Ⅷ度及以上烈度区和8级及以上地震的Ⅸ度及以上烈度区定义为高烈度区。研究了不同类型地震高烈度区的分布特点,并给出了不同类型地震震级与高烈度区长短轴之间的拟合关系。分析结果表明:(1)走滑型地震高烈度区分布基本为比较对称的椭圆,这可能与走滑断层作用的应力是来自两旁的剪切力,其两盘顺断层面走向相对移动,而无上下垂直移动有关;(2)倾滑型地震高烈度区分布不一定对称,具体分布受断层两侧以及断层本身介质的物理性质影响;(3)褶皱类型地震的高烈度区分布特点要根据地震的断层位错和地震时褶皱隆起两方面的信息具体分析。
Abstract:
This paper collected the data of M ≥ 6.5 destructive earthquake since 1966. By analyzing historical earthquake cases, the intensity areas which magnitude range from 6.5 to 7.9, equal or above Ⅷ and magnitude 8 or exceed 8, equal or above Ⅸ will be regarded as high seismic intensity region. The author analyzed the distribution characteristics of high seismic intensity region in different types of earthquakes. The matching relations between different earthquakes magnitude and high seismic intensity region’s long and short axes is given. The analysis results are drawn as follows. (1)For strike-slip earthquakes, the distribution of high seismic intensity region is basically a symmetrical ellipse. Because the stress of strike slip fault is the shear force from both sides and two fault walls moves along strike of fault plane. (2)For dip-slip earthquakes, the distribution of high seismic intensity region may be a symmetrical ellipse. The specific distribution is affected by the physical properties of both sides of the fault and the fault itself. (3)For foiding earthquakes, the distribution characteristics of high seismic intensity region should be specifically analyzed based on the information of fault dislocation and fold uplift.

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备注/Memo

备注/Memo:
收稿日期:2018-04-23;改回日期:2018-09-06。
基金项目:国家重点研发计划项目(2016YFC0803107)
作者简介:杨海芳(1991-),女,硕士研究生,主要从事地震应急方面的研究.E-mail:cehuiyhf@163.com
通讯作者:帅向华。E-mail:shuaixhua@sina.com
更新日期/Last Update: 1900-01-01