MODERN GEODYNAMICS AND SEISMICITY OF THE LOWER KURA OIL AND GAS BEARING REGION

Abstract

The article analyzes the modern geodynamics and seismicity of the Lower Kura depression oil and gas region. Maps of epicenters, seismic profiles, mechanisms of earthquake sources, a map of the orientations of the compression and tension axes, as well as maps of the spatial distribution of the stress state coefficient were constructed and analyzed. Thus, the distribution of earthquake epicenters by area occurred within the study region for the period 2003-2022 showed uneven distribution of earthquake sources. The accumulation of earthquakes is highlighted in the zone of Saatly-Imishli and Gobustan-Shirvan regions. This accumulation
indicates the presence of seismogenic zones in this region. The change in the magnitudes of earthquakes over time showed a periodicity in the release of energy: after a burst of energy, its decline is observed. Analysis of seismic profiles in the NW-SE direction made it possible to identify two zones of distribution of hypocenters 0-10 km and 10-25 km with a slight tendency to subside. On the seismic profile in the SW-NE direction, at a depth of 35-60 km, the SaatlyImishli seismogenic zone is distinguished, at the epicentral distance of 60-85 km, the Hadjigabul, at the epicentral distance of 85-110 km, the Shamakhi seismogenic zone.