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地震 ›› 2000, Vol. 20 ›› Issue (1): 39-44.

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强震前水氡异常台站时空分布斗卜均匀性变化特征

陈学忠1, 王晓青1, 李志雄2   

  1. 1.中国地震局分析预报中心,北京 100036;
    2.中国地震局,北京 100036
  • 收稿日期:1999-04-06 修回日期:1999-05-20 出版日期:2000-01-31 发布日期:2022-09-26
  • 作者简介:陈学忠(1963-),男,副研究员,1995年获博士学位,主要从事地震成因、地震预报、前兆机理等研究。
  • 基金资助:
    地震科学联合基金资助项目(9507435)

The characteristics of variation in inhomogeneity of temPoral-sPatial distribution of radon anomaly before strong earthuakes

CHEN Xue-zhong1, WANG Xiao-qing1, Ll Zhi-xiong2   

  1. 1. Center for Analysls and Predietion,CSB,Beijing 100036,China;
    2. China Seismological Bureau,Beajing 100036,China
  • Received:1999-04-06 Revised:1999-05-20 Online:2000-01-31 Published:2022-09-26

摘要: 研究了华北地区6级左右强震前水氧观测值异常的时空非均匀分布变化特征。结果表明,在强震前水氛观测异常台站的空间分布非均匀性发生显著变化,Cv值有明显的升高过程。这说明,强震前短临地震前兆异常空间分布的非均匀性增强,变得更加不均匀,这可能反映了地壳应力场的增强过程。

关键词: 水氡, 非均匀性, 强震, 华北地区

Abstract: The eharaeteristies of variation ininhomogeneity of temporal-spatial distribution of stations with Radon anomaly observed befor strong earthquakes with magnitude of about 6 oecurred in North China are investigated.To deseribe the inhomogeneity of temporal-spatial distribution of observational station,showing Radon anomaly,Cv alue is employed.The results show that the Cv value distribution of short-term and imminent precursors increases and becomes more inhomogeneous before the strong earthquakes,which eould refleet the enhanecement of the erustal stresses.

Key words: Radon, Inhomogeneity, Strongearthquake, North China

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