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http://dx.doi.org/10.9720/kseg.2013.4.435

A Comparison Study of the Amplification Characteristics of the Seismic Observation Sites using Coda wave, Background Noise, and S-wave Energy from Fukuoka Earthquakes Series  

Kim, Jun Kyoung (Semyung University)
Publication Information
The Journal of Engineering Geology / v.23, no.4, 2013 , pp. 435-445 More about this Journal
Abstract
Since design response spectrum does not reflect local soil characteristics, site specific response spectrum of observed ground motions appears relatively higher than design response spectrum at high frequency range. These problems have been pointed out from the domestic seismic design industry. Among various estimation methods, this study used the method H/V ratio of ground motion for estimating site amplification. This method has been extended to background noise, Coda waves and S waves recently for estimating site amplification. This study applied this method to the background noise and Coda wave energy. This study analysed more than 267 background noises from 15 macro earthquakes including main Fukuoka earthquake (2005/03/20, M=6.5) and then compared to results from S waves, at 8 main domestic seismic stations. The results showed that most of the domestic seismic stations gave similar results to those from S waves. Each station showed its own characteristics of site amplification property in low, high and specific resonance frequency ranges. Comparison of this study to other studies using different method can give us much information about dynamic amplification of domestic sites characteristics and site classification.
Keywords
Background noise; S wave; Coda wave; Site amplification; H/V spectral ratio; Resonance frequency;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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