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A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957–2020

机译:1957 - 2020年在1957 - 2020年在地磁风暴与M≥7.0全球地震之间相关的统计研究

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摘要

In order to find out whether the geomagnetic storms and large-mega earthquakes are correlated or not, statistical studies based on Superposed Epoch Analysis (SEA), significance analysis, and Z test have been applied to the Dst index data and M ≥ 7.0 global earthquakes during 1957–2020. The results indicate that before M ≥ 7.0 global earthquakes, there are clearly higher probabilities of geomagnetic storms than after them. Geomagnetic storms are more likely to be related with shallow earthquakes rather than deep ones. Further statistical investigations of the results based on cumulative storm hours show consistency with those based on storm days, suggesting that the high probability of geomagnetic storms prior to large-mega earthquakes is significant and robust. Some possible mechanisms such as a reverse piezoelectric effect and/or electroosmotic flow are discussed to explain the statistical correlation. The result might open new perspectives in the complex process of earthquakes and the Lithosphere-Atmosphere-Ionosphere (LAI) coupling.
机译:为了了解地质风暴和大型地震是否相关,基于叠加的时期分析(海),显着性分析和Z检验的统计研究已应用于DST指数数据和M≥7.0全球地震在1957 - 2020年期间。结果表明,在≥7.0的全球地震之前,几磁体风暴的概率明显高于它们之后。地磁风暴更有可能与浅地震相关而不是深层。基于累积风暴时间的结果的进一步统计研究表现出与基于风暴日的那些的一致性,这表明大型大型地震前的地磁风暴的高可能性是显着和强大的。讨论了一些可能的机制,例如反向压电效应和/或电渗流以解释统计相关性。结果可能在地震复杂过程中开辟新的视角,岩石圈 - 气氛 - 电离层(LAI)耦合。

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