Study the Global Earthquake Patterns That Follow the St. Patrick’s Day Geomagnetic Storms of 2013 and 2015
Ouzounov D. Khachikyan G.
July 2024Multidisciplinary Digital Publishing Institute (MDPI)
Remote Sensing
2024#16Issue 14
A response of global seismic activity to the geomagnetic storms of St. Patrick’s Day (March 17) in 2013 and 2015 is investigated. These two storms occurred during nearly identical storm sudden commencement times and similar solar flux levels. We have revealed a rather similar pattern of the most substantial earthquakes that have occurred since these storms. Two major crust continental earthquakes, in Iran (M = 7.7), 16 April 2013, and in Nepal (M = 7.8), 25 April 2015, have occurred with a time delay of ~30 and ~39 days after geomagnetic storm onsets in 2013 and 2015, respectively. After that, the great and major deep-focused earthquakes occurred beneath the Sea of Okhotsk (M = 8.3, 24 May 2013, Russia) and the Pacific Ocean (M = 7.8, 30 May 2015, Japan) with a time delay of ~68 and ~74 days, respectively. Geomagnetic storm onsets occurred at 06:04 UT in 2013 and 04:48 UT in 2015. At this time, the high latitudinal areas of the longitudinal regions, in which the mentioned earthquakes occurred in the future, were located under the polar cusp, where the solar wind plasma has direct access to the Earth’s environment. An analysis of the remaining ten earthquakes with M ≥ 7.5, which occurred around the globe in 2013 and 2015, proved the above findings that seismic activity may respond to geomagnetic storm onset with a time delay from some days to some months.
earthquakes , geomagnetic storms , globally released seismic energy
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Institute for Earth, Computing, Human and Observing (Institute for ECHO), Chapman University, Orange, 92866, CA, United States
National Scientific Center for Seismological Observations and Research, Almaty, 050060, Kazakhstan
Institute for Earth
National Scientific Center for Seismological Observations and Research
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