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CPT site characterization for seismic hazards in the New Madrid seismic zone |
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| Authors: | T P W M P E S R B |
| Institution: | a School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive, Atlanta, GA 30332-0355, USA b M. Tuttle and Associates, 128 Tibbetts Lane, Georgetown, ME 04548, USA c US Geological Survey, 3876 Central Avenue, Ste. 2, Memphis, TN 38152-3050, USA d Department of Earth Sciences, The University of Memphis, 402 J.M. Smith Building, Memphis, TN 38152, USA |
| Abstract: | A series of cone penetration tests (CPTs) were conducted in the vicinity of the New Madrid seismic zone in central USA for quantifying seismic hazards, obtaining geotechnical soil properties, and conducting studies at liquefaction sites related to the 1811–1812 and prehistoric New Madrid earthquakes. The seismic piezocone provides four independent measurements for delineating the stratigraphy, liquefaction potential, and site amplification parameters. At the same location, two independent assessments of soil liquefaction susceptibility can be made using both the normalized tip resistance (qc1N) and shear wave velocity (Vs1). In lieu of traditional deterministic approaches, the CPT data can be processed using probability curves to assess the level and likelihood of future liquefaction occurrence. |
| Keywords: | Cone-penetration test In situ tests Site characterization Liquefaction Paleoliquefaction Porewater pressures Seismic hazard Shear waves |
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