Predictability of sea wave anomalous (microtsunamis modeling) by submarine landslides applied to Cirò Marina coast along the Calabro Ionian margin

Di Fiore V., Amato L., Cavuoto G., Marsella E., Punzo M., Tarallo D.

Abstract

The Calabria’s Ionian continental slope is deeply incised by canyons which are characterized by V-shape cross-sections in their upper parts and Ushape cross-sections in their terminal parts. These conditions are favorable, under seismic action, it may give rise to submarine landslides. In this study, we propose a 3D numerical modeling of tsunami waves generated by an underwater slump with “Geowave” software. The simulated gravity instability zone is near the “Venere 1” head Canyon situated close Cirò Marina coastal area. The availability of a detailed bathymetric map both with a good knowledge of the local geology allowed us to obtain reliable simulation results. Interesting results of tsunami simulation, in the abovementioned shoreline areas, show that the amplitude of wave run-up ranges from 0.50 m up to 0.90 m. This difference in run-up is ascribed to the directional effects and to the different coastal morphology.

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DOI

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IMEKO TC

TC19 - Environmental Measurements

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