| 关于地电阻率突变序列与地震关系的研究 |
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| 引用本文： | 刘心恒,周郧生.关于地电阻率突变序列与地震关系的研究[J].中国地震,1995,11(3):239-247. |
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| 作者姓名： | 刘心恒 周郧生 |
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| 作者单位： | 云南省地震局 |
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| 摘 要： | 本文从断裂力学观点出发，分析研究了大量的实际观测结果，发现强震前震中附近的台站将观测到有关地震的异常电阻率突变序列。序列中最大突变的出现将随着震中距的加大而后移，随震极的增强而提前。
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| 关 键 词： | 岩石破裂 地电阻率 地震 地震预报 |
On The Study of The Relationship Between the Mutation Sequence of Earth Resistivity and Earthquakes |
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| Liu Xinheng,Zhou Yunsheng.On The Study of The Relationship Between the Mutation Sequence of Earth Resistivity and Earthquakes[J].Earthquake Research in China,1995,11(3):239-247. |
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| Authors: | Liu Xinheng Zhou Yunsheng |
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| Abstract: | Based on fracture mechanics, large amount of practically observed data is analyzed in this paper, and it is disclosed that the earth resistivity station around the epicenter of a strong event has shown seismically-anomalous earth resistivity sudden change sequence. The maximum sudden change in the sequence tends to shift backward with the increase of epicentral distance, while it shifts forward with the increase of the magnitude of the earthquake. The maximum sudden change also expands from the epicenter to the peripheral areas. The result of study has also shown that the obvious degree of the anomalies is related with the measuring direction. The lithological contrast around the station also influence the time of the occurrence of the anomalies. The maximum sudden change of mutation sequence will be advanced, owing to the resistance to pressure is no good. Starting from those findings,the authors propose that it might be possible to predict the three key elements of a forthcoming earthquake by using the sudden change sequence, frequency of the sudden change, the expansion velocity of the maximum sudden change and the time-distance product. |
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| Keywords: | Rock fracturing Earth resistivity Mutation anomaly |
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