| 乌龟井地震台氡值变化分析 |
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| 引用本文： | 谭 可. 乌龟井地震台氡值变化分析[J]. 四川地震, 2014, 0(1): 38-41 |
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| 作者姓名： | 谭 可 |
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| 作者单位： | 攀枝花市防震减灾局乌龟井地震台,四川攀枝花617065 |
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| 摘 要： | 2013年9月龟井台水氡观测值出现大幅度下降,为了分析其原因,将SD-3B测氡仪与FD-125型两套仪器测得的氡值变化趋势进行对比分析,结合SD-3B测氡仪历年观测资料,对于这一异常现象进行分析,排除各种外界干扰因素以后,认为近期水氡超幅度异常变化是由于降雨骤增地下水动力系统条件改变引起的平衡态转换所致。井水位在-8 m处是临界点。当干旱少雨致使外来渗入补给水不足时,出现井水位低于-8 m,此时很少地表水渗入,观测井水也少有外渗流出,溶解在井水中的氡富集度较高,水氡背景值就在一个较高值的范围内变化。当降水增加致使地下水渗入增加,井水位上升,同时观测井水向外流出,造成地下水动力系统条件改变,氡值就会出现突发性的下降,在井水位高于-8 m后,由于大量渗入的地表水稀释和观测井水向外流出带走大量溶解氡,这一状态下氡浓度会较低,水氡观测背景值在一个较低值范围内变化。
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| 关 键 词： | 乌龟井地震台 氡值异常 仪器对比 分析结论 |
Discussion on the changes of water radon content in Wuguijin Seismic Station |
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| TAN Ke. Discussion on the changes of water radon content in Wuguijin Seismic Station[J]. Earthquake Research in Sichuan, 2014, 0(1): 38-41 |
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| Authors: | TAN Ke |
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| Affiliation: | TAN Ke ( Wuguijin Seismic Station, Protecting against and Mitigation Earthquake Disaster Administration of Panzhihua City, Sichuan Panzhihua 617065, China) |
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| Abstract: | The observation value of the water radon content observed by the instrument SD -3B decreased sharply in September 2013. In order to get the answer to changes we use another instrument FD - 125 to operate at same period. Based on accumulate observation data of both instrument and the data observed before we find that the bigger changes of water radon content are caused by the local heavy rainfall. |
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| Keywords: | water radon content anomaly Wuguijin Seismic Station comparison between two instrument |
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