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地震 ›› 2009, Vol. 29 ›› Issue (2): 104-117.

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汶川8.0级地震前后宏观异常现象分析

张小涛1, 张永仙2, 许敦煌3   

  1. 1.中国地震局地震预测研究所, 北京 100036;
    2.中国地震台网中心, 北京 100045;
    3.法国国家科学研究中心, 法国 巴黎 75005
  • 收稿日期:2008-10-07 修回日期:2009-01-16 出版日期:2009-05-31 发布日期:2021-10-18
  • 作者简介:张小涛(1982-), 男, 山东济宁人, 2006年在读硕士研究生, 主要从事地震预测及宏观异常等研究。
  • 基金资助:
    中国地震局国家科技支撑计划项目(2006BAC01B03-04-04)

Investigation of the Macroscopic Anomalies before and after the Wenchuan M8.0 Earthquake

ZHANG Xiao-tao1, ZHANG Yong-xian2, XU Dun-huang3   

  1. 1. Institute of Earthquake Science, CEA, Beijing 100036, China;
    2. China Earthquake Networks Center, Beijing 100045, Chian;
    3. Centre National de la Recherché Scientifique, Paris 75005, France
  • Received:2008-10-07 Revised:2009-01-16 Online:2009-05-31 Published:2021-10-18

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摘要： 文章对2008年5月12日汶川8.0级大地震前后(2008年2月1日至6月10日)出现的宏观异常现象进行了收集整理。 较为可靠的异常做为地震宏观异常, 并对其时空分布特征进行了研究。 研究结果表明, 在时间分布上, 地震宏观异常的数量在临震前形成一次峰值, 震后出现两次峰值; 在空间分布上, 大震前后宏观异常的空间展布方向趋于一致。 文章还对宏观异常的映震机理以及对地震预测可能发挥的作用等问题进行了讨论。

关键词: 汶川8.0级地震, 宏观异常, 统计分析, 时空分布

Abstract: This paper collects and analyzes the macroscopic anomalies before and after the May 12, 2008 Wenchuan M8.0 earthquake, Sichuan Province. The credible anomalies occurred from February 1 to June 10, 2008 were treated as macroscopic anomalies, then, space-time distribution of the macroscopic anomalies were studied. The results indicate that, in time distribution, the number of macroscopic anomalies reached peak value before the earthquake, and two peak values appeared after the earthquake. In space, the distribution of macroscopic anomalies before the earthquake was the same as after the earthquake. The reason why macroscopic anomalies occurred, the role of macroscopic anomalies in earthquake forecast were also discussed .

Key words: Wenchuan Earthquake, Macroscopic anomaly, Statistical analysis, Space-time distribution

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