Liquefaction Risk Assessment by the Use of Seismic Techniques – The Test Area of Nafplion City, Peloponnesus, Greece

Abstract

Combined seismic surveys of P and S waves (seismic reflection, refraction, modelling, MASW and crosshole investigations) with geotechnical borehole testing effectively evaluated the land where the Nafplion city, Greece is expanding. Since the area was suspected for high liquefaction potential, a study was performed using all the modern tools for this evaluation. The study area was too large to be examined by the standard laboratory and borehole testing, therefore the aid of geophysics was proved to be valuable. We present the methodology we followed and the main results of the study for the test area of Nafplion city. Evidence was found indicating a low factor of safety against liquefaction at specific sites within the area of interest.