Variation of dispersion of radon content in the groundwater and short-term and imminent precursors of earthquakes |
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| Authors: | Wei Zhang Yu’an Xing and Ruying Xing |
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| Institution: | (1) Center for Analysis and Prediction, State Seismological Bureau, Beijing, China |
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| Abstract: | A lot of observational data both at home and abroad suggested that before some strong earthquakes anomalous variations of
radon concentration appear in the chemical composition of groundwater. In order to further study these anomalies and get reliable
precursory anomalies, a special packet of precursory data processing has been developed recently. By using a computer program
of first-order difference method, it is discovered that the scatter of radon content increased systematically before earthquakes
at some observation posts where observational conditions are fairly good. This change may be a new criterion for evaluating
short-term and imminent earthquake precursors. |
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| Keywords: | Hydrogeochemical Geohydrological Radon Groundwater |
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