Using the geophysical (gravi-magnetometric) method to separate areas with different geological structures, their tectonic zoning, the Earth's shape, thickness, internal structure, rotation around its axis, the processes occurring in the crust due to the gravitational influence of the Moon and the Sun, parallel geomagnetic field stress and time-space changes of gravitational potential are studied.
Geomagnetic research is carried out in two directions:
1. Monitoring of continuous variations of geomagnetic field stress to detect seismomagnetic effect.
- Detection of seismomagnetic effect during strong earthquakes (ml≥4.5);
- Determining the criteria of dependence of detected seismomagnetic effect on mechanism and parameters of earthquake sources;
2. Monitoring of spatio-temporal variations of geomagnetic field stress in geodynamic polygons with a discrete step in order to assess the stress-strain state of strong earthquake sources.
Observations are made with modern G-856 proton type magnetometers made in the USA.
Researches are conducted in the Sheki-Shamakhi-Balaken, Near Kura-Talysh, Guba-Khazar and Gandja-Gazakh geodynamic polygons of Azerbaijan. As a result, a 2D schematic map and a 3D model reflecting the stress-deformation state of the geomagnetic field in the mentioned polygons are drawn up.
As a result of the conducted research, an electronic information bank of data was created in RSSC ANAS.
In the future, it is planned to create new geodynamic landfills in the Karabakh economic zone.
Reflection of geomagnetic stresses of the stress-strain state of Shamakhy-Balaken site environment in the 2D and 3D format
Gravimetric researches study the characteristics of changes in the gravity strength in the internal structure of the Earth and on its surface. With this method, the distribution of masses of different densities inside the Earth, the study of the depth tectonic structure of geodynamic polygons, the tectonic zoning of seismoactive zones, and the detection of regional and local anomalies are carried out. The relationship between detected anomalies and strong earthquakes and deep faults is being investigated.
Stationary gravimetric mode observation works
Stationary surveys are continuously conducted in Sheki, Gazakh, Lankaran and Baku with 4 latest Canadian-made CG-5 AutoGrav type gravimeters. The aim is to study the regularity of changes in the time-space-dependent variations of gravity in the Earth's crust due to the gravitational influence of the Moon and the Sun in seismoactive zones.
Discrete gravimetric studies carried out in geodynamic polygons
High-precision discrete gravimetric observations are regularly performed throughout the year in the geodynamic polygons created by the Republican Seismic Survey Center. As a result, a schematic map and a 3D model in 2D format reflecting the gravimetric field stress are built every month for the geodynamic polygons mentioned above. Prepared maps are complexly interpreted with the geodynamics of the area, as well as geomagnetic field tension change maps and schemes, and seismoactive zones are detected throughout the year. As a result, the depth-tectonic structure and stress-deformation state of the area are re-specified by applying the 2nd derivative method of gravitational potential for such zones.