Comparison of underwater MASW, seismic CPT and downhole methods offshore Croatia

摘要

Shear wave velocity (V_s) is a key parameter for seismic amplification analyses, and for assessment of liquefaction potential of loose offshore sands. A number of methods are available to measure V_s offshore, including Seismic Cone Penetration Testing (SCPT), Multichannel Analysis of Surface Waves, and Downhole methods. A marine investigation was carried out offshore Croatia for a new bridge connecting the Croatian mainland to the Peljesac peninsula. During the investigation, underwater V_s measurements were taken with the three methods outlined above. This paper presents the data acquisition, processing and results. Advantages and limitations of the three methods used are discussed.