engleski

Storm surges in the Adriatic Sea: an impact on the coastal infrastructure

The paper reveals some recent findings considering global sea level rise, and the vulnerability for some regions in the world. Sea level rise in the Adriatic is given in contest of storm surge activity, and their influence on the coastal infrastructure. Risk analysis performed on the data collected at Rovinj outlines that the occurrence of storm surges with certain heights will be multiplied within next 100 years, if the projections of sea level rise will take place. Case studies in December 1997 and November 1999 are presented, by analyzing sea level data from tide gauge stations placed on the east Adriatic and some meteorological parameters. The first case reveals the occurrence of free oscillations – seiches – and its possible impact on the coastal areas, while the second gives an example of strong storm occurring locally, but producing a considerable damages on the coastal infrastructure. The main meteorological elements (air temperature, precipitation, relative humidity, insolation duration, cloudiness, wind and occurrences of dew, fog, hail and thunder) on the nearest meteorological stations have been analysed. The analysis is based on the data of the Rovinj station for the future marine park of the islands of Vrsar, the Pula station for the external islands of Medulin, the Cres station for Veli and Mali Ćutin and the Senj and Rab stations for Goli, Prvić and Grgur. There are climatological stations on the islands of Silba and Palagruža and their data have been used for this purpose. In order to establish the climatic variations of temperature air, relative humidity, precipitation and insolation duration, the linear trends have been analysed in the future marine parks. It is shown that each of six locations of the future marine parks is specific considering the wind, thermal or precipitation regimes. According to linear trend analyses and the nonparametric Mann-Kendall test, the existence of a significant linear trend relative humidity of air (decreasing chronology) has been established in the annual values. A tendency towards a decrease in precipitation amount and increase in insolation duration has also been observed and it could have a negative influence on the land-island flora and fauna.

Storms surges; Adriatic Sea

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