Yu.A. Vinogradov, M.I. Ryzhikova, N.V. Petrova, M.V. KolomietsGlobal earthquakes in the 2024 second half according to the GS RAS

Description of the Earth’s seismicity at the magnitude level mb (MS)≥6.0 (a total of 56 earthquakes) in the 2024 second half is presented, as well as information about 83 earthquakes felt on the territory of the Russian Federation according to the Alert Service of the Geophysical Survey RAS is given. For 11 strongest events for this period, information messages were published within one to two days of their occurrence. The messages contain parameters of the main shocks, focal mechanisms, waveforms and macroseismic data. During the period under review, the strongest earthquake on the Globe with mb=7.3 (Mw=7.4) occurred on July 9 in Chile at a depth of 120 km. The greatest human casualties and material damage were caused by the catastrophic earthquake on December 17, MS=7.2 (Mw=7.4) on the island of Efate, Vanuatu, in which 14 people were killed and 200 people were injured. On the territory of Russia, the strongest and most noticeable earthquake (5–6 points at Cape Shipunsky) was the earthquake on August 17, MS=7.3 (Mw=7.0) in the Pacific Ocean off the eastern coast of Kamchatka. The earthquake occurred at the boundary of the Okhotsk and Pacific plates and is interplate one. The movement direction in the source according to the solution of the focal mechanism coincides with the direction of subduction of the Pacific plate under the Okhotsk plate. The seismic energy released in the Globe (Sum(E0.5)=8.218x10**16 J) decreased relative to the same value for the 2024 first half (Sum(E0.5)=1.286x10**17 J) and, as during two previous half-years, remained below the half-year average for the period 2010–2024.