Modern horizontal movements in the zones of strong and moderate earthquakes of the early 21st century in the central sector of the Greater Caucasus: characteristics inferred from GPS observations and connection with neotectonics and deep structure of the Earth's Crust

Rogozhin, E.A.; Milyukov, V.K.; Mironov, A.P.; Ovsyuchenko, A.N.; Gorbatikov, A.V.; Andreeva, N.V.; Lukashova, R.N.; Drobyshev, V.N.; Khubaev, K.M.

Авторы: Rogozhin E.A., Milyukov V.K., Mironov A.P., Ovsyuchenko A.N., Gorbatikov A.V., Andreeva N.V., Lukashova R.N., Drobyshev V.N., Khubaev Kh M.
Журнал: Izvestiya - Atmospheric and Oceanic Physics
Том: 55
Номер: 7
Год издания: 2019
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 759
Последняя страница: 769
Оригинальные версии: Характеристики современных горизонтальных движений в зонах заметных землетрясений начала XXI в. в центральном секторе Большого Кавказа по данным GPS-наблюдений и их связь с новейшей тектоникой и глубинным строением земной коры
DOI: 10.1134/S0001433819070053
Аннотация: Analysis of the results of GPS-measurements made for the first time along a geodesic profile intersecting all the main geological structures in the Ossetian region of the Greater Caucasus showed that in zones of recent strong earthquakes there are significant jumps in the velocity of horizontal displacements. Interpretation of the measurement materials was performed in comparison with the results of neotectonic, seismotectonic studies and data on the deep structure. The maximum decrease in the current transverse compression velocities was recorded in the zones of the Vladikavkaz and Kakhetino-Lechkhum faults. In the zone of the Vladikavkaz fault, a center of the Khataldon earthquake appeared on May 11, 2008 with M = 4.5 and with intensity of 4 in the epicentral zone. The epicentral regions of Rachinsky 1991 with M = 7.0, as well as Dzhavsky 1991 with M = 6.2, Oniysky-I on February 6, 2006 with M = 5.0 and Oniysky-II on September 7, 2009 from M = 6.0, had covered blocks of the upper crust within the Kakhetino-Lechkhum suture zone at the foot of the southern slope of the Greater Caucasus.The previously predicted significant decrease in the rate of horizontal movements after the seismic activation in the areas of these catastrophic seismic events of 1991, 2006 and 2009 on the southern slope of the Greater Caucasus was fully confirmed.
Добавил в систему: Миронов Алексей Павлович

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