Major discovery: Solar activity causes earthquakes

In a new paper released on Nature, they analyze 20 years of proton density and velocity data, as recorded by the SOHO satellite, and the worldwide seismicity in the corresponding period, as reported by the ISC-GEM catalog. They found a clear correlation between proton density and the occurrence of large earthquakes greater than M5.6, with a time shift of one day.

The significance of such a correlation is very high, with the probability to be wrong lower than 10–5. The correlation increases with the magnitude threshold of the seismic catalog. A tentative model explaining such a correlation is also proposed, in terms of the reverse piezoelectric effect induced by the applied electric field related to the proton density. This result opens new perspectives in seismological interpretations, as well as in earthquake forecasts.

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