| Seismic Risk Region Determination by Information Entropy |
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| 作者姓名： | Zhou Shiyong and Zhu LingrenSeismological Bureau of Xinjiang Uygur Autonomous Region Urumqi China |
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| 作者单位： | Zhou Shiyong and Zhu LingrenSeismological Bureau of Xinjiang Uygur Autonomous Region，Urumqi 830011，China |
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| 基金项目： | This project was Sponsored by the Joint Earthquake Science Foundation, China. |
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| 摘 要： | During the preparation process of a great earthquake, there are certain patterns of less randomness but more order in the space-time distribution of micro-earthquakes, which had been proved by seismic events and experiments. The information entropy concerning the dimension of the order in seismic distribution is systematically defined from the point of modern statistical physics in this paper. Relations of dynamic variations of information entropy with a strong shock occurrence time and the distribution of information with a strong shock occurrence place were approached through seismic data from the Wuqia, Xikar, Wushi, and Manasi regions in Xinjiang. It is indicated that before strong earthquakes, the value of information entropy often noticeably drops in seismic region, and generally much lower in the epicentral area than the surrounding regions. These two characters are of important significance in strong shock risk region determination and large shock tendency prediction.
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Seismic Risk Region Determination by Information Entropy |
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| Zhou Shiyong and Zhu LingrenSeismological Bureau of Xinjiang Uygur Autonomous Region,Urumqi ,China.Seismic Risk Region Determination by Information Entropy[J].Earthquake Research in China,1996(2). |
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| Authors: | Zhou Shiyong and Zhu LingrenSeismological Bureau of Xinjiang Uygur Autonomous Region Urumqi China |
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| Institution: | Zhou Shiyong and Zhu LingrenSeismological Bureau of Xinjiang Uygur Autonomous Region,Urumqi 830011,China |
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| Abstract: | During the preparation process of a great earthquake, there are certain patterns of less randomness but more order in the space-time distribution of micro-earthquakes, which had been proved by seismic events and experiments. The information entropy concerning the dimension of the order in seismic distribution is systematically defined from the point of modern statistical physics in this paper. Relations of dynamic variations of information entropy with a strong shock occurrence time and the distribution of information with a strong shock occurrence place were approached through seismic data from the Wuqia, Xikar, Wushi, and Manasi regions in Xinjiang. It is indicated that before strong earthquakes, the value of information entropy often noticeably drops in seismic region, and generally much lower in the epicentral area than the surrounding regions. These two characters are of important significance in strong shock risk region determination and large shock tendency prediction. |
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| Keywords: | Information entropy Small earthquake activity Seismic risk region |
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