Περίληψη:
The present work explores the ability of a GIS platform based tool to estimate potential losses of
geotechnical earthquake hazard. Phenomena, such as liquefaction, dynamic settlements, lateral
spreading, landslides and permanent ground displacements are assessed in both qualitative and
quantitative way, under a probabilistic hazard scenario that corresponds to the earthquake of 14th
August 2003 that stroke the island of Lefkada. Post earthquake observations of geotechnical failures
triggered by the above seismic event, meticulously registered in situ, are directly compared to
theoretical scenarios of anticipated losses of geotechnical earthquake hazards, as depicted in relevant
thematic maps. Theoretical results directly compared to observed geotechnical earthquake hazards are
quite concluding in a considerable number if issues. However, a certain number of discrepancies that
have been detected between calculations and observations are qualitatively explained, whilst
perspectives for improvement of the computational GIS based approach are highlighted.