| 中小地震深度分布特征与中长期前兆机理分析 |
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| 引用本文： | 王健,张雷.中小地震深度分布特征与中长期前兆机理分析[J].中国地震,2001,17(3):299-303. |
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| 作者姓名： | 王健 张雷 |
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| 作者单位： | 1. 中国地震局地球物理研究所
2. 宿州教育学院地理系 |
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| 摘 要： | 统计了不同震级地震的深度分布，数据显示：震级越低，深度分布的范围越广；随着震级增大，震源深度有集中在地壳中上层的趋势。通过分析中小地震深度分布特征的原因，结合强震发生的条件和特性，对中小地震前兆机理进行了解释。本文的结果和认识对判定中长期强震危险区有一定的应用价值。
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| 关 键 词： | 地震活动 深度分布 地震前兆 中长期地震预测 震级 |
Analysis on Depth Distribution and Precursory Mechanism of Small and Moderate Earthquakes |
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| Wang Jian,Zhang Lei.Analysis on Depth Distribution and Precursory Mechanism of Small and Moderate Earthquakes[J].Earthquake Research in China,2001,17(3):299-303. |
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| Authors: | Wang Jian Zhang Lei |
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| Institution: | Wang Jian~1) Zhang Lei~2) |
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| Abstract: | The earthquake focal depth distribution of each magnitude has been ana lyzed.Statistic data showed:the lower magnitude,the wider focal depth distributi on.With magnitude growing the focus tend to be in upper or mediate crustal layer s.We analyzed the cause of focal depth distribution and explained the precursory mechanism of small and moderate earthquakes with occurrent condition and charac teristics of strong earthquakes.The results can be applied to determine risk si tes of strong earthquakes. |
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| Keywords: | Seismicity Depth distribution Precursor Medium and Longterm earthquake pr ediction |
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