In the context of wave climate variability, longterm alterations in the wave storminess pattern of the Catalan coast (northwestern Mediterranean Sea) are analysed in terms of wave energy content and wave direction, on the basis of wave hindcast data (from 44-year time series). In general, no significant temporal trends are found for annual mean and maximum energy. However, the same analysis carried out separately for different wave directions reveals a remarkable increase in the storm energy of events from the south, which is partly due to a rise in the annual percentage of such storms. A case study of Tarragona Port (on the southern Catalan coast) highlights the importance of including changes in wave direction in the study of potential impacts of climate change. In particular, an increase in the frequency of storms from the south leads to greater agitation inside the Port.
CitationCasas-Prat, M.; Sierra, J. Trend analysis of wave storminess: wave direction and its impact on harbour agitation. "Natural Hazards and Earth System Sciences", 19 Novembre 2010, vol. 10, p. 2327-2340.
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