## 3 Results
### A Pattern of Seismic Activity at the Globe after the Magnetic Storms on 17 March 2013 and 2015
On 16 September 2015, the great M = 8.3 earthquake occurred in Chile with coordinates at the epicenter of 31.573\({}^{\circ}\)S, 71.674\({}^{\circ}\)W. At the time of jump-like solid growth in the solar wind parameters on 22 June 2015 at 18:37 UT, the magnetic local time in the area of the M = 8.3 Chile earthquake epicenter was equal to MLT = 14.12 h. Thus, the high latitudinal area of the Chile longitudinal region was located under the polar cusp. A time delay between the shocked solar wind arrival on June 22, 2015 and the M = 8.3 earthquake in Chile on 16 September 2015 was equal to 86 days. Another example is on 24 October 2015 at 19:00 UTC, as a jump-like growth in the solar wind and geomagnetic field parameters occurred when the SYM/H index reached up to +39 nT (Figure 7). Again, at this time (19:00 UTC), the American longitudinal region was located on the dayside. One month later, on 24 November 2015, a \"doublet\" of major (M = 7.6) deep-focused (h \(\geq\) 600 km) earthquakes occurred in this longitudinal region in Peru with coordinates at the epicenter of 10.537\({}^{\circ}\)S, 70.944\({}^{\circ}\)W and 10.060\({}^{\circ}\)S, 71.018\({}^{\circ}\)W. At 19:00 UTC, the magnetic local time in the area of the two major earthquakes in Peru was equal to MLT = 14.5 h. The delay between the shocked solar wind arrival on October 24 and a \"doublet\" of significant earthquakes on November 24 was equal to -31 days. For the remaining five M \(\geq\) 7.5 events in 2013 and 2015, we could also identify the preceded geomagnetic storms when, at the times of storm onset, the high-latitudinal areas of the longitudinal regions of the future epicenters were located under the polar cusp (Table 2). Figure 6: (from top to bottom): One-minute data on the magnitude of the averaged magnetic field vector on Earth’s orbit, the vertical component of the interplanetary magnetic field in the GSM coordinate system, the speed and density of the solar wind flux, the pressure of the solar wind at the magnetopause, and the SYM/H index for 21–23 June 2015 from the OMNI database. Figure 7: (from top to bottom): One-minute data on the magnitude averaged magnetic field vector on Earth’s orbit, the azimuthal and vertical components of the interplanetary magnetic field (By and Bz) in the GSM coordinate system, density and temperature of the solar wind flux, pressure of the solar wind at the magnetopause, and geomagnetic SYM/H index for 24–25 October from the OMNI database. Therefore, the M = 7.5 earthquake in Alaska on 5 January 2013 was preceded 66 days by a geomagnetic storm on 31 October 2012, the M = 8.0 earthquake in the Solomon Islands on 6 February 2013 was preceded 20 days by a geomagnetic storm on 17 January 2013, the M = 7.7 earthquake in Pakistan on 24 September 2013 was preceded 51 days by a geomagnetic storm on 4 August 2013, the M = 7.7 earthquake at Scotia Sea on 17 November 2013 was preceded 82 days by a geomagnetic storm on 27 August 2013, and the M = 7.5 earthquake in Afghanistan on 26 October 2015 was preceded 36 days by a geomagnetic storm on 20 September 2015. Table 2 shows (column 5) that, as a rule, at the time of geomagnetic storm onset (time of sharp compression of the magnetosphere by the shocked solar wind), the high-latitudinal areas of longitudinal regions of the future epicenters were located under the polar cusp 08 h-16 h MLT. The most significant disagreement occurred regarding the M = 7.5 earthquake in Alaska on 5 January 2013 when the MLT = 7.15 h. At the same time, it was reported in [36] that the longitudinal cusp location may be more comprehensive due to, for example, the much-extended length of the reconnection X-line at the magnetopause. It is seen in Table 2 that 14 earthquakes with a magnitude M \(\geq\) 7.5 that occurred around the globe in 2013 and 2015 could have been provoked by only eight geomagnetic storms.