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The purpose of this work is to calculate theoretical transfer characteristics of the sedimentary layers under the seismic station of the Carpathian seismic network “Uzhgorod” by finite element method. These results will be used for comparison with the dynamic parameters of the near-surface layers obtained experimentally. Based on the correlation of the resonance properties obtained by these methods, the possibility of their use in regional seismological studies was substantiated. In this work, the simulation was carried out by solving the direct dynamic seismic problem by the finite element method. Using the developed wave field simulation technique, oscillations for models of the seismic section under the «Uzhgorod» station were investigated. According to the simulation results for this seismic station, theoretical spectral relations were calculated. The results obtained by the experimental and model methods showed identical behavior throughout the frequency range. According to these graphs, a stable source of noise within the city was allocated. The knowledge about the dynamic parameters of the upper sediment layers under the seismic station, which are the largest filter of oscillation frequencies in the spectral range, will allow more accurate interpretation of registered by this station occurrences. The calculated spectral ratios give a possibility to estimate the degree of environmental influence on station’s seismic signals recording, which will be the largest at frequencies corresponding to the received resonance maxima and minima. These results should be taken into account when evaluating the parameters of possible seismic effects on the territory.

Experimental and FEM Calculation of Spectral Characteristics of Near-surface Layers under the Seismic Station Uzhgorod