RESEARCH ON THE POSSIBILITY OF USING THE MEDIAN GRADIENT METHODIC WHILE EXPLORING OF CONTEMPORARY GEODYNAMIC ACTIVITY

Abstract

The article presents the results of analytical studies in order to research the possibility of using electrical exploration by the resistivity method with installing a median gradient in the complex of geodynamic diagnostics of a rock massif for monitoring changes in the stress-strain state.
Current geodynamic activity changes the volume of pores
and cracks which are filled to some extent with an aqueous
solution of various salts and which are an electrolyte. This reflects in the change of the values of the apparent electrical resistivity. But in addition to current geodynamic activity, the formation of the electrical conductivity of rocks in the near-surface zone is significantly affected by meteorological conditions (atmospheric precipitation, air temperature, wind speed), which are different in periods between series of measurements. At the same time, the influence of meteorological conditions on the area is distributed evenly. Thus, the apparent electrical resistivity of rocks in the near-surface zone changes under the influence of two factors: meteorological conditions and current geodynamics. To determine only the geodynamic
component of the formation of apparent electrical resistivity values while monitoring by the median gradient method, we propose to use normalization. The obtained results are a prerequisite for continuing research on the use of the median gradient technique in the complex of geodynamic diagnostic.