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http://dx.doi.org/10.11108/kagis.2016.19.4.017

Site Classification for Incheon According to Site-Specific Seismic Response Parameters by Estimating Geotechnical Spatial Information Based on GIS  

SUN, Chang-Guk (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources)
KIM, Han-Saem (Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.19, no.4, 2016 , pp. 17-35 More about this Journal
Abstract
Earthquake-induced disasters are often more severe in locations with soft soils than firm soils or rocks due to differences in ground motion amplification. On a regional scale, such differences can be estimated by spatially predicting subsurface soil thickness over the entire target area. In general, soil deposits are generally deeper in coastal or riverside areas than in inland regions. In this study, a coastal metropolitan area, Incheon, was selected to assess site effects and provide information on seismic hazards. Spatial prediction of geotechnical layers was performed for the entire study area within the GIS framework. Approximately 7,000 existing borehole drilling data in the Incheon area were gathered and archived into the GIS Database (DB). In addition, surface geotechnical data were acquired from a walkover survey. Based on the built geotechnical DB, spatial zoning maps of site-specific seismic response parameters were created and presented for use in a regional seismic strategy. Site response parameters were performed to determine site coefficients for seismic design over the entire target area and compared with each other. Site classifications and subsequent seismic zoning were assigned based on site coefficients. From this seismic zonation case study in Incheon, we verified that geotechnical GIS-DB can create spatial zoning maps of site-specific seismic response parameters that are useful for seismic hazard mitigation particularly in coastal metropolitan areas.
Keywords
Site Classification; Geotechnical Layers; Seismic Response; Spatial Zonation; Coastal City;
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Times Cited By KSCI : 13  (Citation Analysis)
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