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Appl. Sci. 2018, 8(2), 314; https://doi.org/10.3390/app8020314

Geo-Proxy-Based Site Classification for Regional Zonation of Seismic Site Effects in South Korea

1
Geological Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea
2
Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea
*
Author to whom correspondence should be addressed.
Received: 24 January 2018 / Revised: 5 February 2018 / Accepted: 17 February 2018 / Published: 24 February 2018
(This article belongs to the Special Issue Seismic Metamaterials)
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Abstract

Seismic site effects and topographic effects related to ground motion occur during an earthquake due to site-specific geotechnical or geological characteristics, including the geological or geographical structure and the characteristics of near-surface sub-soil layers. Site-specific site effects due to geological conditions have been confirmed in recent earthquake events. Earthquake-induced damage has mainly occurred at accumulated soft soil layers under basins or along coasts and rivers. An alternative method has recently been proposed for evaluating regional seismic site effects and amplification factors using digital elevation models (DEM). High-quality DEMs at high resolutions may be employed to resolve finer-scale variations in topographic gradients and consequently, correlated site response parameters. Because there are many regions in South Korea lacking borehole datasets, which are insufficient for site classification only using borehole datasets, a DEM-based proxy for seismic zonation can be effective. Thus, in this study, geo-proxy-based site classification was proposed based on empirical correlations with site response parameters and conducted for regional zonation of seismic site effects to identify the amplification of characteristics in the western metropolitan areas of South Korea, depending on the site-specific geo-spatial conditions. View Full-Text
Keywords: site classification; site response; geo-proxy; seismic zonation; geo-spatial grid site classification; site response; geo-proxy; seismic zonation; geo-spatial grid
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Sun, C.-G.; Kim, H.-S.; Cho, H.-I. Geo-Proxy-Based Site Classification for Regional Zonation of Seismic Site Effects in South Korea. Appl. Sci. 2018, 8, 314.

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