| 地下水中氡含量离散度变化与地震的短临前兆 |
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| 引用本文： | 张炜,邢玉安,邢如英.地下水中氡含量离散度变化与地震的短临前兆[J].地震学报,1987,9(3):312-318. |
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| 作者姓名： | 张炜 邢玉安 邢如英 |
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| 作者单位： | 国家地震局分析预报中心 |
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| 摘 要： | 国内外已有较多的观测资料表明,强震前地下水中氡浓度会出现异常变化.为了深入研究这些变化,进一步提取可靠的前兆信息,寻找定量判据,作者最近研制了水化前兆数据处理专用程序包,对地下水氡含量观测资料进行处理.用一阶差分法发现,在一些观测条件较好的水点上,震前氡测值出现了离散度加大的现象,这种现象有可能成为判别短临异常的一种新的判定指标.
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VARIATION OF DISPERSION OF RADON CONTENT IN GROUNDWATER AND SHORT-TERM AND IMMINENT PRECURSORS OF EARTHQUAKES |
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| Institution: | Center for Analysis and Prediction, State Seismological Bureau |
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| Abstract: | A lot of observational data obtained both at home and abroad suggest 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 one-order difference method, it is discovered that the dispersion of radon content systematically increases before earthquakes at some observation posts which have fairly good observation conditions. This change may be a new criterion for evaluating short-term and imminent earthquake precursors. |
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