| 大同两次Ms5.8地震序列的震源区应力场对比分析 |
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| 引用本文： | 刁桂苓,于利民.大同两次Ms5.8地震序列的震源区应力场对比分析[J].地震,1995(4):345-352. |
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| 作者姓名： | 刁桂苓 于利民 |
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| 作者单位： | 天津市地震局
中国天津300201(刁桂苓)，河北省地震局
中国石家庄050021(于利民)，河北省地震局 中国石家庄050021(李钦祖) |
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| 基金项目： | 地震科学联合基金资助课题(91060) |
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| 摘 要： | 收集了大同１９８９年１０月Ｍｓ５．８地震序列及１９９１年３月Ｍｓ５．８地震序列各１５天的地震资料。经计算分别和到１３５个和１４９个小震震源机制解。通过系统聚类分析发现，两序列震源机制的类型随分布存在一定的差异。分析认为是由第一序列为震群型，第二序列为孤立型的区别所至。详细对比了序列起始２小时和５天的情况，供序列发展趋势的早期判别借鉴。
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| 关 键 词： | 震源机制 地震序列 震源区 应力场 大同地区 |
COMPARISON AND ANALYSIS OF THE SOURCE STRESS FIELD INFERRED FROM SEQUENCE OF TWO EARTHQUAKES M_s 5.8 IN DATONG |
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| Diao Gulling.COMPARISON AND ANALYSIS OF THE SOURCE STRESS FIELD INFERRED FROM SEQUENCE OF TWO EARTHQUAKES M_s 5.8 IN DATONG[J].Earthquake,1995(4):345-352. |
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| Authors: | Diao Gulling |
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| Institution: | Diao Gulling(Seismological Bureau of Tianjin)Yu Limin Li Qinzu(Seismological Bureau of Hebei Province) |
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| Abstract: | Source mechanism of 135 and 149 weaker earthquakes are obtained by calculation of the earthquake data for the first 15 days of the two Datond earthquake sequences with Ms 5. 8 ( MS 5. 8 events in October 1989 and in March 1991) . It is found from systematical cluster analysis that there is definite difference between the temporal distribution of the mechanism clusters of the two sequence because the first sequence is the type of earthquake cluster and the second one is the solitary type. The datail comparison of the data of 2 hours and 5 days started from the sequences might provide the basis for the early determination of the earthquake tendency. |
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| Keywords: | Focal mechanism Seismic sequency Datong earthquake Source stress field |
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