| Early Estimation of Strong Aftershock Duration Time |
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| 作者姓名： | Zhou Cuiying Wang Hongwei Wang Mei and Zhang YuxiaSeismological Bureau of Shandong Province Jinan China Center for Analysis and Prediction SSB Beijing China |
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| 作者单位： | Zhou Cuiying，Wang Hongwei，Wang Mei，and Zhang YuxiaSeismological Bureau of Shandong Province，Jinan 250014，China Center for Analysis and Prediction，SSB，Beijing 100036，China |
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| 基金项目： | This project was sponsored by the Jiont Earthquake Science Foundation (91012), China |
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| 摘 要： | In order to solve the problem of early estimation of moderately strong aftershock duration time in an earthquake sequence,this study has been conducted.First,the definition of the strong aftershock has been given.It is pointed out that there is a difference in the strong aftershock duration time between the main shock type sequence and the strong earthquake swarm sequence.After dividing the three cases,i.e.,a strong aftershock duration time larger than 1 day,smaller than 1 day,and no strong aftershock occurred in a main shock type sequence by using the pattern recognition method,we gave the rough correlation relation between strong aftershock duration time and first large shock magnitude for two types of sequences.Finally,the judgment index and method of estimating strong aftershock duration times for different sequence types have been given.
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Early Estimation of Strong Aftershock Duration Time |
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| Zhou Cuiying,Wang Hongwei,Wang Mei,and Zhang YuxiaSeismological Bureau of Shandong Province,Jinan ,China Center for Analysis and Prediction,SSB,Beijing ,China.Early Estimation of Strong Aftershock Duration Time[J].Earthquake Research in China,1997(4). |
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| Authors: | Zhou Cuiying Wang Hongwei Wang Mei and Zhang YuxiaSeismological Bureau of Shandong Province Jinan China Center for Analysis and Prediction SSB Beijing China |
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| Affiliation: | Zhou Cuiying,Wang Hongwei,Wang Mei,and Zhang YuxiaSeismological Bureau of Shandong Province,Jinan 250014,China Center for Analysis and Prediction,SSB,Beijing 100036,China |
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| Abstract: | In order to solve the problem of early estimation of moderately strong aftershock duration time in an earthquake sequence,this study has been conducted.First,the definition of the strong aftershock has been given.It is pointed out that there is a difference in the strong aftershock duration time between the main shock type sequence and the strong earthquake swarm sequence.After dividing the three cases,i.e.,a strong aftershock duration time larger than 1 day,smaller than 1 day,and no strong aftershock occurred in a main shock type sequence by using the pattern recognition method,we gave the rough correlation relation between strong aftershock duration time and first large shock magnitude for two types of sequences.Finally,the judgment index and method of estimating strong aftershock duration times for different sequence types have been given. |
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| Keywords: | strong aftershock duration time pattern recognition early estimation |
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