Geophysical Studies of the February 6, 2023 Earthquake in the Southeast of Turkey

Abstract

The precursors of earthquakes that occurred on February 6, 2023 with an interval of nine hours in the southeast of Turkey are considered. The epicenter of the first, with a magnitude of 7.8 (± 0.1), was located in the Shehitkamil area in Gaziantep, the epicenter of the second, with a magnitude of 7.5 (± 0.1), was in the Ekinyozu area in Kahramanmarash. The approach used is related to the study of the change in the entropy of the measured fields, which occurs as a result of the activation of the processes of faults of lithospheric plates immediately before an earthquake. It was possible to reveal the phenomenon of processes with a high degree of determinism that occur before a seismic event. A change in the nature of the movement of stations of space geodesy and geodynamics of the CrAO for all coordinates was registered a few days before the start of the block of Turkish earthquakes, which indicates a change in the balance of forces in the region.