Метеорологічний аспект геодинамічного стану Закарпатського внутрішнього прогину

Abstract

Резюме. Періодичності в активізації сейсмотектонічних процесів у Закарпатському внутрішньому прогині актуалізує дослідження геодинамічного стану Закарпатського внутрішнього прогину. Вивчено зміни параметрів метеорологічного стану регіону: температури повітря, вологості пові- тря, атмосферного тиску, кількості опадів. Представлено результати дослідження геодинаміки регіону. Показано сейсмічність регіону, її зв’язок із рухами кори та іншими параметрами метеоро- логічного стану. Проведено дослідження метеорологічного аспекту сейсмогенеруючих процесів у Закарпатському внутрішньому прогині за 2018 рік. Відмічено зв’язок варіацій температури повітря та рухів кори, зв’язок варіацій атмосферного тиску та сейсмотектонічних процесів у Закарпатському внутрішньому прогині.

Abstract. Seismotectonic processes in the Transcarpathian Inner Trough are studied by means of measuring modern lateral movements of the Earth’s crust and registering microseismicity at seismic stations of the Carpathian research and methodical geophysical division of the Carpathian region seismic activity department of S.I. Subbotin Geophysics Institute of the National Academy of Sciences of Ukraine. Information on the geodynamic state of the region is obtained from the results of observing the lateral movements of the Earth’s crust in Berehove lowlands (deformation gauge is at “Berehove» monitoring geophysical station) in the zone of Oaș deep-seated fault (deformation gauge is at deformation observation station “Korolevo»). The data on the local seismic activity are obtained from the results of observations at “Trosnyk» monitoring geophysical station (Trosnyk village, Vynohradiv Raion). The region’s seismic activity is represented by a series of local earthquakes, their number varying from 20 to 190 instances). They may also include perceptible earthquakes happening once in 4-6 years, however, in the period 2010–2015 perceptible earthquakes were registered annually and their number was increasing. For instance, in 2015 there were 6 perceptible earthquakes in Tyachiv Raion. The study of the geodynamic state showed some peculiarities characteristic of the Transcarpathian Inner Trough: cyclicity of the region’s geophysical processes, correlation of the influence factors and the region’s geological processes, geophysical fields are influenced by the seismotectonic processes in the Transcarpathian Inner Trough. This research studied the influence of the meteorological parameters on the course of ecologically dangerous phenomena in the region.Furthermore, it investigated seismically hazardous phenomena and meteorological parameter variations, their relation to modern lateral movements of the Earth’s crust, as well as their influence on the region’s seismic activity. This work also analysed the change of the region’s meteorological stateparameters: air temperature, air humidity, air pressure, and precipitation. It presented the results of studying the region’s geodynamics. Moreover, the author showed the region’s seismic rating, its relation to the movements of the Earth’s crust as well as other parameters of the meteorological state, the results of analysing the relation between the region’s meteorological and ecological state. The meteorological aspect of seismogenic processes in the Transcarpathian Inner Trough for the 2018 year has been researched. The hydrological character of the local seismic activity that is represented by 148 local low-intensity earthquakes has been substantiated. The increase of seismic activity in the region was the result of intensive lateral movements of the Earth’s crust in the zone of Oaș deep-seated fault. The value of rock expansion in 2018 is +19 х10-7 testifying ofcontinued alternating geological processes in the region. The end of the alternating processes interval is accompanied by increased number of local earthquakes, including perceptible ones.