Citation:
Abstract:
The present study aims to present the results of a near-surface geophysical investigation carried out at
a construction site in the area of Goudi (Athens) along with its contribution to the determination of the
geotechnical characteristics. For this purpose, the Ground Penetrating Radar (GPR), Electrical
Resistivity Tomography (ERT), Seismic Refraction Tomography (SRT) and Multichannel Analysis of
Surface Waves (MASW) techniques were implemented in the area. The cores of three geotechnical
boreholes existing in the area have also been taken into account. The application of the GPR and ERT
techniques did not reached a satisfactory investigation depth, however the existence of a possible
mechanically degraded zone have been adumbrated at the south part of the excavation area. Through
the application of the SRT and MASW techniques, the seismic waves velocities of the investigated
lithological formations were calculated and the subsurface structure of the study area was outlined.
Additionally, lateral variations in the P-wave seismic velocities, especially in the first investigated
seismic layer, provided further evidence for the existence of mechanically unstable zones, which
necessitate a more detailed investigation. Finally, from the laboratory determination of the formations’
densities and their seismic wave velocities, their elastic moduli and geotechnical parameters have been
calculated.