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Study on the Characteristics of Ground Vibrations During Earthquakes Near Focal Zones in Dagestan

Study on the Characteristics of Ground Vibrations During Earthquakes Near Focal Zones in Dagestan The paper analyzes the parameters of ground vibrations under seismic loading observed on the territory of Dagestan. A close correlation was revealed between the duration, amplitude level, and frequency content of vibrations depending on the parameters of a focus and ground conditions at the point of interest. The conducted spectral analysis of the envelopes of body wave tails revealed a 3 to 4 times amplitude increase for medium-density soils as compared to bedrock across the entire spectrum width and an up to 8 to 15 times amplitude increase at resonant frequencies. For soft waterlogged soils, the amplitude was found to increase by 5–6 and 20 times, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Soil Mechanics and Foundation Engineering Springer Journals

Study on the Characteristics of Ground Vibrations During Earthquakes Near Focal Zones in Dagestan

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References (35)

Publisher
Springer Journals
Copyright
Copyright © Springer Science+Business Media, LLC, part of Springer Nature 2022
ISSN
0038-0741
eISSN
1573-9279
DOI
10.1007/s11204-022-09789-5
Publisher site
See Article on Publisher Site

Abstract

The paper analyzes the parameters of ground vibrations under seismic loading observed on the territory of Dagestan. A close correlation was revealed between the duration, amplitude level, and frequency content of vibrations depending on the parameters of a focus and ground conditions at the point of interest. The conducted spectral analysis of the envelopes of body wave tails revealed a 3 to 4 times amplitude increase for medium-density soils as compared to bedrock across the entire spectrum width and an up to 8 to 15 times amplitude increase at resonant frequencies. For soft waterlogged soils, the amplitude was found to increase by 5–6 and 20 times, respectively.

Journal

Soil Mechanics and Foundation EngineeringSpringer Journals

Published: Mar 1, 2022

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