2005年7月25日黑龙江省林甸5.1级地震——地下流体前兆异常分析
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摘要
分析了2005年7月25日林甸5.1级地震和2005年2月23日富裕3.7级地震前,林甸1井大地微电流、林甸04井的氦气和大庆地震台的地温异常变化。大地微电流在这2次地震前具有明显的异常变化,其异常幅度达正常背景值的10~20倍。氦气在林甸5.1级地震前具有明显前兆异常变化。
In the article, the anomalous variations of the helium content of the 4th observational well, the micro-current of the 1th well in Lindian, and the water temperature at Daqing well in Heilongjiang province before the Lindian M_S 5.1 earthquake on July 25 2005 and Fuyu M 3.7 earthquake on February 23 2005 are analyzed. The anomalous variations of micro-current before this two earthquakes are obvious. The anomalous amplitude is 10~20 times higher than that of ordinary background. And the helium content anomaly before the Lindian M_S 5.1 earthquake is also notable.
引文
孔令昌,王志敏,王桂清.2002.大地微电流检测仪的研制与观测[J].地震地磁观测与研究,23(5):69~71

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