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SH-wave refraction/reflection and site characterization

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Abstract

Traditionally, nonintrusive techniques used to characterize soils have been based on P-wave refraction/reflection methods. However, near-surface unconsolidated soils are oftentimes water-saturated, and when groundwater is present at a site, the velocity of the P-waves is more related to the compressibility of the pore water than to the matrix of the unconsolidated soils. Conversely, SH-waves are directly relatable to the soil matrix. This makes SH-wave refraction/reflection methods effective in site characterizations where groundwater is present. SH-wave methods have been used extensively in site characterization and subsurface imaging for earthquake hazard assessments in the central United States and western Oregon. Comparison of SH-wave investigations with geotechnical investigations shows that SH-wave refraction/reflection techniques are viable and cost-effective for engineering site characterization.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
SH-wave refraction/reflection and site characterization
Issue:
108
Year Published:
2000
Language:
English
Publisher:
ASCE
Publisher location:
Reston, VA, United States
First page:
126
Last page:
140
Number of Pages:
15
Conference Title:
GeoDenver 2000 'Use of Geophysical Methods in Construction'
Conference Location:
Denver, CO, USA
Conference Date:
5 August 2000 through 8 August 2000