Study of the characteristics of earthquake precursory anomalies of He and H2 Beijing No. 2 Cotton Mill well and their relation with earthquakes |
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Authors: | Shu-Quan Fan Sheng-Hu Su Ni Li |
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Affiliation: | (1) Institute of Geology, State Seismological Bureau, 100029 Beijing, China |
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Abstract: | This paper systematically summarized the relation of the abnormal change of He and H2 dissolved gasses in deep hot-water well at Beijing No. 2 Cotton Mill and their relation with seismicity of the region. An empirical formula for the relation of the precursory anomaly of He and H2 gasses with the magnitude and occurrence time of earthquake has been derived. Two events of magnitude greater than 5 in North China had been successfully predicted by using this formula. The Chinese version of this paper appeared in the Chinese edition ofActa Seismologica Sinica,15, 490–497, 1993. |
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Keywords: | He and H2 anomalies earthquake prediction occurrence time of earthquake earthquake magnitude |
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