ASSESSMENT OF THE DYNAMIC CHARACTERISTICS AND SEISMIC VULNERABILITY OF SOILS IN THE TERRITORY OF TERMEZ CITY BASED ON MICROSEISMIC VIBRATIONS
This study presents the assessment of soil seismic vulnerability in the city of Termez based on ambient microtremor measurements. The Horizontal-to-Vertical Spectral Ratio (HVSR) method proposed by Nakamura was applied to determine the fundamental resonance frequency, spectral amplification factor, and soil vulnerability index (Kg). The recorded microtremor data were processed using the Geopsy and SESAME software packages, and a GIS-based seismic vulnerability map of the study area was developed. The results indicate that loess and water-saturated soils exhibit relatively high Kg values, reflecting greater susceptibility to seismic loading and potential soil instability. The obtained vulnerability map provides valuable information for seismic microzonation, engineering geological investigations, and earthquake-resistant urban planning.
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