ON THE INFLUENCE OF EXOGENEOUS PROCESSES ON THE RESULTS OF MEASURING MOVEMENTS OF GEODESIC MARKINGS

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The influence of exogenous processes on geodetic marks is multifactorial, and in modern observation practice there is no clear scientifically based system of engineering and geodetic forecasting of neotectonics influence on the results of repeated high-precision leveling, on the basis of which it would be possible to solve the issues of stability of depth, soil and rock leveling marks, as well as modeling the mechanism of influence of exogenous processes on the results of repeated leveling. Therefore, the study of their influence is an urgent task. The study is aimed at determining the influence of exogenous processes on the results of measurements of geodetic marks displacements during observations at local geodynamic polygons in the Kryvyi Rih region. The work performed has shown that the temperature factor is periodic in nature and therefore its influence on the stability of the reps also naturally varies over time: it changes linearly in the time interval March-May and September-November, sinusoidally in June-August, if divided into separate parts. Although, in general, the temperature change can be described as a sinusoid. A linear correlation has been established, but it should be noted that it can be broken by the imposition of a stronger factor that determines the dynamics of the movement of the rappers. There is no clear connection between temperature changes Δt and exceedances Δh in the time interval May-July. The intensive increase in temperature corresponds to the lowering of soil references, which is inconsistent with the general theory of their stability. The phase shift is more than two months, which indicates the influence of another, stronger factor than temperature on the stability of soil references. Periodic changes in atmospheric temperature cause thermal deformations of rocks, which, due to differences in thermal properties and temperature conditions of rocks, have a complex differentiated structure in space and time, which is manifested in heterogeneous vertical displacements of the references underlying these rocks. The revealed regularities of the temperature factor and the instability of the references caused by this factor made it possible to predict its value and recommend a scheme of time periods for field measurements in repeated cycles.