| 大地震前地震信息熵的异常——以乌恰地震为例 |
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| 引用本文： | 朱令人.大地震前地震信息熵的异常——以乌恰地震为例[J].地震地质,1988,10(2):29. |
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| 作者姓名： | 朱令人 |
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| 作者单位： | 新疆维吾尔自治区地震局 |
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| 摘 要： | 在大地震酝育准备过程中,总是出现种种小地震活动的异常,如条带、空区,成丛、成串等。这些异常从不同角度反映了小地震(微破裂)活动随机性的降低、有序度的增加。本文引入信息熵的概念,定量地研究大震前小震活动从无序到有序的演化,以1983年2月和1985年8月乌恰6.8和7.4级地震为例,表明震前地震信息熵确有明显异常
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| 关 键 词： | 新疆 乌恰 信息熵 地震 |
ANOMALY OF INFORMATION ENTROPY BEFORE GREAT EARTHQUAKES——THE CASE STUDY OF WUQIA EARTHQUAKES |
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| Zhu Ling-ren.ANOMALY OF INFORMATION ENTROPY BEFORE GREAT EARTHQUAKES——THE CASE STUDY OF WUQIA EARTHQUAKES[J].Seismology and Geology,1988,10(2):29. |
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| Authors: | Zhu Ling-ren |
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| Affiliation: | The Seismological Bureau of Xinjiang Uygur Autonomous Region |
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| Abstract: | The small earthquake activity often presents various anomaly, such as strip, gap, crowd and string etc., during preparing process of a great earthquake. The anomaly reflects the decreasing randomness and the increasing orderness for the samll earthquake activity (microfracture). Here the envolution of small earthquake activity from dis-order to order before great earthquake is studied quantitatively by introducing the concept of information entropy.The information entropy of an earthquake is represented as:where for method 1 for method 2The case study of two Wuqia earthquakes (Ms 6.8., February of 1983, and Ms 7.4, August of 1985) indicates there is obvious anomaly of information entropy before the earthquakes. |
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| Keywords: | Xinjiang Wuqia Information entropy Earthquake |
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