ANALYSIS OF MODERN MOVEMENTS OF EARTH CRUST BLOCKS IN AZERBAIJAN ACCORDING TO THE DATA OF GPS STATIONS IN 2020- 2021

Abstract

The article presents a method for calculating the velocity fields of modern horizontal displacements of the tectonic blocks of Azerbaijan, obtained from the results of observations at 24 stationary GPS_RSSC stations, a characteristic aspect of which is a noticeable horizontal displacement in the northeast direction at a rate of 4–12 mm/year. In this article, the velocity field of tectonic blocks on the territory of Azerbaijan was studied based on the results of GPS measurements calculated using the GAMIT program (Global Navigation Satellite System (GNSS) at the Massachusetts Institute of Technology) [4]. It has been established that along the Lesser Caucasus, in the Kura basin, the Nakhchivan Autonomous Republic and the border regions of Iran, there is a compression zone oriented to the NE. The maximum value of the strain rate throughout the territory of Azerbaijan fluctuates within 13.7 mm/year; the average value for all stations is 7.9 mm/year. Analysis of the velocity field also showed low velocity
values in the Greater Caucasus (4-6 mm/year). In addition, a correlation analysis of the value of velocities with the seismic activity of the region was carried out. It is concluded that there is a certain relationship between the change in the values of the velocities of horizontal movements and the distribution of strong earthquakes in the field of the rate of deformation of the earth's crust.