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http://dx.doi.org/10.5000/EESK.2009.13.6.011

The Statistical Model of Fourier Acceleration Spectra according to Seismic Intensities for Earthquakes in Korea  

Yun, Kwan-Hee (한전 전력연구원)
Pakr, Dong-Hee (한전 전력연구원)
Park, Se-Moon (한국수력원자력(주) 발전기술원)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.13, no.6, 2009 , pp. 11-25 More about this Journal
Abstract
A method of instrumentally estimating the seismic intensity (MMI) based on Fourier Acceleration Spectrum, which is the so-called 'FAS MMI method' of Sokolov and Wald (2002), was considered for its applicability to Korea. In order to implement the FAS MMI method, the empirical models of mean (m) and standard deviation (${\sigma}$) for Korea were derived for MMI ${\leq}$ IV according to individual seismic intensity by using the site-consistent horizontal FAS of 580 records from 65 isoseismal maps prepared based on the reported MMI of Korea Meteorological Administration. The site-consistent FAS at a site were obtained by correcting the observed FAS for the difference of the site amplification function relative to that of the target site of Class D station (Yun and Suh, 2007) which was evaluated to be a representative site for the generic soil profile of Korea. The FAS m model for MMI ${\leq}$ IV follows the overall linear relation in log space according to seismic intensities, featuring the FAS mean model for MMI = IV similar to that of the global model of Sokolov and Wald (2002). The ${\sigma}$-values of the FAS model are found to be greater than those of the global model for MMI ${\geq}$ V, while significantly lower than those of the global model for MMI = IV.
Keywords
Fourier acceleration spectrum; Seismic intensity; Isoseismal map; Site classification;
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Times Cited By KSCI : 1  (Citation Analysis)
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