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| 环太平洋大震的时空特征分析 | |
| 引用本文： | 黄建平,石耀霖,苏小宁.环太平洋大震的时空特征分析[J].地震,2013,33(4):115-122. |
| 作者姓名： | 黄建平 石耀霖 苏小宁 |
| 作者单位： | 1.中国地震局地震预测研究所, 北京 100036; 2.中国科学院大学, 北京 100049 |
| 基金项目： | 中国地震局地震预测研究所基本科研业务费专项 |
| 摘 要： | 本文基于聚类分析方法和聚类树图, 对1890年以来环太平洋周边7.5级以上大震的时间间隔特征进行分析, 发现起始震级低于8.0级的地震分类特征一致, 而起始震级在8.0级以上地震分类特征比较详细: 在初步分为地震活跃期和地震平静期时, 在地震活跃期内, 又可细分为地震活动相对高活跃期(时间间隔1年左右)和地震活动相对低活跃期(时间间隔6年左右)。 进而, 以8.0级以上地震最后一个活跃期为例, 揭示了在地震活跃期内, 地震的空间迁移表现出逆时针旋转的特征。 |
| 关 键 词： | 地震活动 平静 迁移 环太平洋 |
| 收稿时间： | 2012-08-11 |
| 修稿时间： | 2013-07-01 |
Analysis of the Temporal-spatial Distribution of the Circum-Pacific Seismicity |
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| HUANG Jian-ping , SHI Yao-lin , SU Xiao-ning.Analysis of the Temporal-spatial Distribution of the Circum-Pacific Seismicity[J].Earthquake,2013,33(4):115-122. | |
| Authors: | HUANG Jian-ping SHI Yao-lin SU Xiao-ning |
| Institution: | 1. Institute of Earthquake Science, CEA, Beijing 100036, China; 2. University of Chinese Academy of Sciences,Beijing 100039, China |
| Abstract: | Based on cluster analysis, the time interval characteristics of strong earthquakes (M≥7.5) along the circum-Pacific region since 1890 are analyzed and it is found that the cluster characteristics of earthquake time interval are similar when starting magnitude is less than 8.0. When the starting magnitudes are larger than 8.0, the cluster numbers are more detailed. In a preliminary seismic active period, it can be divided into relative high active one (the earthquake time interval is about 1 year) and relative low active one (the earthquake time interval is about 6 year). Finally, taking the last active period as an example, a counter-clockwise rotation is shown for the migration of M≥8.0 earthquakes. |
| Keywords: | Cluster characteristics of earthquake Quiescence Migration Circum-Pacific seismicity |
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