Long term wave hindcast in the Adriatic Sea

Bertotti, Luciana; Cavaleri, Luigi; Tescaro, N.

doi:10.1007/bf02511835

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Data relevant to the study are: the significant wave height (Hs), the maximum wave height calculated according to the statistical distributions proposed by Battjes and Groenendijk [47] (Hmax is the height with probabilities of exceedance equal to 0.1 %), the peak period (Tp) and the wind speed (vw) evaluated for a return period of 1 year and 100 years. The data relevant to the extreme conditions are consistent with previous measurements carried out north to the area of study [48,49]. [50].…”

Section: Geological Aspectssupporting

confidence: 90%

Investigating the potential and feasibility of an offshore wind farm in the Northern Adriatic Sea

et al. 2016

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Section: Geological Aspectssupporting

confidence: 90%

Investigating the potential and feasibility of an offshore wind farm in the Northern Adriatic Sea

et al. 2016

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“…The first (Bertotti et al, 1996) identifies a marine storm as a time series of sea states characterised by a maximum significant wave height higher than 2 m. The time interval between two subsequent storm peaks should be at least 24 h. Finally, to separate two successive peaks, the significant wave height should become lower than 50% of the first peak. The Table 1 Location and characteristics of wave gauges used for the analysis.…”

Section: Forcing Input: Marine Storm Identification and Isolationmentioning

confidence: 99%

Critical storm thresholds for significant morphological changes and damage along the Emilia-Romagna coastline, Italy

Armaroli

Ciavola

Perini³

et al. 2012

Geomorphology

115

118

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The definition of storm morphological thresholds along the coast of the Emilia-Romagna Region strictly depends on its configuration and variability. The region is located in northern Italy, facing the Adriatic Sea. The coastline is characterised by very different levels of economic development, ranging from natural zones with dunes to highly developed stretches protected by breakwaters and groynes. The Integrated Coastal Zone Management effort is mainly concentrated on preserving urban areas that generate significant income for the regional economy. Natural areas, while small in comparison to the urbanised zone, are important for environment preservation. Because of such a multiplicity of issues at stake, it was decided to produce two different thresholds: one for the morphological impact on natural sectors and another for inundation and damage to structures along urbanised zones. The “forcing” component of the threshold definition for natural areas was calculated by summing the effects of surge + tide + waves (run-up elevation) to find the Maximum Water Level (MWL) reached by the sea during one, ten and one-hundred year storm return periods. For urbanised zones, historical storm information was collected starting from the 1960s in order to identify the forcing conditions causing real damages. Each storm was classified in terms of wave height, period, direction and surge level. Morphological information were obtained from Lidar flights performed in 2003 and 2004 and from direct surveys undertaken in September 2008 and February 2009 as part of the monitoring programme for the MICORE Project. The computed MWL for each return period was then compared to beach elevations along natural areas in order to calculate the Dune Stability Factor (DSF), an index that accounts for the eroded sediment volume above the MWL during a storm. Based on analysis along 41 profile lines at a 500 m spacing, it was found that the 1-in-1 year return period wave height + 1-in-1 year return period surge are able to erode and/or overwash 2/3 of the dunes. The historical storm hydrodynamic information was used to estimate which wave and surge conditions are able to inundate at least 2/3 of the beach profiles. The MWL was again compared to beach elevations, this time along 63 anthropogenic profiles spaced 500 m apart (or 1/3 of the urbanised coastline). It was found that a wave heights >= 2 m and surge + tide levels >= 0.7 m are able to flood between 18% and 36% of the built-up coast. The defined thresholds are related to the present coastal characteristics and are not “static”, meaning that they are likely to change according to future evolution of the coastline. They are very important because they can be used as thresholds to issue warnings and alert the Civil Protection. Moreover they are the first thresholds defined for the Emilia-Romagna coastline and will be used as starting values to generate “dynamic” thresholds based on numerical model predictions of morphological change for a given wave and surge level

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