Understanding the complex mechanism of Earthquake phenomenon, as in all the natural systems on the Earth, does not necessarily depend on a single cause, but on a set of factors. This study is aimed at investigating the electrical phenomena that could trigger, accompany and follow an actual seismic event, with the focus of research on strong Earthquakes on a global scale of magnitude equal to or greater than 7. The variables analyzed in this study are different but the focus of the research has focused on three aspects. The first concerns the state of transition of the Olivine to about 10 km of depth and the release of electric charges and heat; the second analyzes the influence of the variation of the duration of the day; and a third analysis concerns the implication of electrical phenomena that may be at the basis of Earthquake triggering, in particular, the earthquakes of magnitude equal to or greater than 7. Another analysis of the strong earthquakes that occurred in 2018 concerned the Earth’s Aphelion and Perihelion, linked to the Length of Day (LOD). The results showed that electrical phenomena play an important role in triggering Earthquakes.
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