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An observational and numerical case study of a flash sea storm over the Gulf of Genoa

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Author(s): A. Orlandi | F. Pasi | L. F. Onorato | S. Gallino

Journal: Advances in Science and Research
ISSN 1992-0628

Volume: 2;
Start page: 107;
Date: 2008;
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ABSTRACT
During the night between the 8 and 9 December 2006 the seawall of the Savona harbour (Liguria Region in north west of Italy) was overtopped by waves. In this work the "Savona flash sea storm" has been studied by analyzing the data recorded by meteo-marine observing stations and the data produced by high resolution meteo-marine numerical models. The data show that, due to the presence of a fast moving low pressure system, the event was characterized by a rapid transition and interaction between two different regimes of winds and related sea states. The results of the study suggest that the most damaging dynamics of the event could be correlated to a bi-modal structure of the wave spectrum. Based on this the authors suggest that a deeper study of the spectral structure of sea storms could lead to define new operational forecasting tools for the preventive evaluation of sea storms damaging potential.
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