Development of Geographical Information System (GIS) for Seismic Hazard Study of Charleston, SCby James R. Martin, II, Virginia Polytechnic Inst & SU, Blacksburg, United States,
Document Type: Proceeding Paper
Part of: Geographic Information Systems and their Application in Geotechnical Earthquake Engineering
One of the most prominent areas of seismicity in the eastern U.S. is near Charleston, SC. The 1886 Charleston earthquake (M=7,5) and liquefaction evidence from at least five prehistoric earthquakes demonstrate the potential for strong seismic shaking in the region. Much of the city and surrounding areas are founded on liquefiable sand deposits. Some areas also contain deep soft soils that could amplify ground motions. This paper outlines the plan to use GIS technology in this effort. The GIS database will include geologic and geotechnical data, seismic analysis and probability models, and overlays of lifelines and critical facilities. The GIS system will allow mapping and identification of areas vulnerable to earthquake-induced damage, including soil liquefaction and amplification effects.
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