Application of SASW Method Underwater
- 1 June 1998
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Geotechnical and Geoenvironmental Engineering
- Vol. 124 (6) , 523-531
- https://doi.org/10.1061/(asce)1090-0241(1998)124:6(523)
Abstract
The spectral analysis of surface waves (SASW) method is a nonintrusive testing technique for determining shear wave velocity (VS) profiles of geotechnical sites using seismic interface waves (also called surface waves). Both small-scale and full-scale experiments have been conducted to develop the SASW technique for use underwater. The small-scale tests were performed to validate theoretical predictions regarding dominant types of seismic waves at the water/substrate interface. The tests clearly show a difference between soft and stiff substrates, where the definition of substrate stiffness is based on the value of the velocity of the Rayleigh-type interface wave (VR) relative to the velocity of compression waves in water (VW). In the simplest case, where the substrate is soft (VRVW), the dominant wave was found to be a generalized Rayleigh wave, the mea...Keywords
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