A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957-2020.
A Statistical Study of the Correlation between Geomagnetic Storms and M ≥ 7.0 Global Earthquakes during 1957-2020.
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DOI：
10.3390/e22111270
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发表时间：
2020-11-09
期刊：
影响因子：
--
通讯作者：
Han P
中科院分区：
文献类型：
--
作者：
Chen H;Wang R;Miao M;Liu X;Ma Y;Hattori K;Han P
为了探讨磁暴与大地震的相关性，对1957-2020年全球M ≥ 7.0地震和Dst指数资料进行了叠加历元分析、显著性分析和Z检验。结果表明，全球M ≥ 7.0级地震前，磁暴发生的概率明显高于地震后。磁暴更可能与浅源地震有关，而不是与深源地震有关。进一步的统计调查的结果的基础上累积的风暴小时显示的一致性与那些基于风暴天，这表明，地磁风暴之前的大地震的高概率是显着的和强大的。一些可能的机制，如反向压电效应和/或电渗流进行了讨论，以解释统计相关性。这一结果可能为研究地震的复杂过程和岩石圈-大气-电离层（LAI）耦合提供新的视角。
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.
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DOI：
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发表时间：
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期刊：
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY
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