Return Period of a Sea Storm with at Least Two Waves Higher than a Fixed Threshold

Arena, Felice; Barbaro, Giuseppe; Romolo, Alessandra

doi:10.1155/2013/416212

Cited by 17 publications

(12 citation statements)

References 22 publications

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“…Nevertheless, it was seen by processing hundreds of data that even the distributions are quite close to each other. Thus, real storm statistics can be investigated by their EPS counterparts, as they are equivalent in a probabilistic sense [21,[29][30][31][32][33]. The EPS shape is commonly determined a priori.…”

Section: The Equivalent Power Storm Modelmentioning

confidence: 99%

“…Such a replacement allows constructing an "equivalent sea", that is a sequence of equivalent storms, which is used for deriving relevant wave statistics and has the crucial feature of providing an analytical solution for the determination of the storm peak distribution, thus circumventing the best fit of the data. In this regard, it is worth mentioning that this approach allowed deriving closed-form solutions for the calculation of return values of interest in structural reliability analysis, such as the return period of significant wave heights, of individual wave heights and of nonlinear crest heights [31][32][33]. Further, it provided simple expressions for the determination of average persistence above a certain significant wave height threshold, which are not yet validated against recorded data.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of Downtime and of Missed Energy Associated with a Wave Energy Converter by the Equivalent Power Storm Model

et al. 2015

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Abstract:The design of any wave energy converter involves the determination of relevant statistical data on the wave energy resource oriented to the evaluation of the structural reliability and energy performance of the device. Currently, limited discussions concern the estimation of parameters connected to the energy performance of a device. Thus, this paper proposes a methodology for determining average downtime and average missed energy, which is the energy that is not harvested because of device deactivations during severe sea storms. These quantities are fundamental for evaluating the expected inactivity of a device during a year or during its lifetime and are relevant for assessing the effectiveness of a device working at a certain site. For this purpose, the equivalent power storm method is used for their derivation, starting from concepts pertaining to long-term statistical analysis. The paper shows that the proposed solutions provide reliable estimations via comparison with results obtained by processing long wave data.

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Section: The Equivalent Power Storm Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimation of Downtime and of Missed Energy Associated with a Wave Energy Converter by the Equivalent Power Storm Model

et al. 2015

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“…The increase in anthropogenic pressure observed in Italy over the last 50 years has increased the vulnerability of the territory under the action of natural events such as floods [1]- [3], debris flow [4], storms [5], [6] and coastal erosion [7], [8]. In fact, the increase in anthropogenic pressure has mainly resulted in an increase in soil waterproofing [9], with a consequent reduction in hydrological losses and an increase in river discharge with the same rainfall event.…”

Section: Introductionmentioning

confidence: 99%

Morphodynamic Analysis of the Tuccio River, South Calabria, Italy

Geria

Foti

Puntorieri

2018

WIT Transactions on the Built Environment

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The paper describes a case study of the Tuccio River, which models and analyses its discharge, sediment transport and morphological evolution, and also identifies the possible causes of evolutionary and flooding phenomena. The Tuccio River is situated in the southern extremity of Calabria, on the Ionian coast, about 30 km from Reggio Calabria. Adjacent to the river there is a town (Melito Porto Salvo), an aqueduct, and varied economic activity, most of which is related to agriculture and breeding. This is an interesting case study because the riverbed has displayed several morphological changes, many of which were recent and related to the construction of hydraulic works. The entire riverbed study area was divided into two subsections. The downstream subsection is about 3.5 km long, it is heavily anthropised and has an elevation from the riverbed. Flooded areas were evaluated for this section. The second subsection is located about 10 km upstream from the river mouth, its length is over 3 km long and it is characterised by an erosive phenomena. The sediment transport in the section was modelled and the modelling became complex. In fact, the following software was used: MapWindow (to characterise the river basin), Google Earth Pro, QGIS and the GPS Visualizer application (for the reconstruction of the DEM), HEC-HMS (for hydrological modelling), HEC-RAS2D (for hydraulic and sediment transport modelling). From the results of the HEC-RAS2D modelling it was possible to observe that in the mountain section, 50,000 t/year were eroded on average. Moreover, a significant percentage of this material was deposited downstream. This situation, together with the presence of hydraulic structures, caused an elevation of the river bed, with an increase in flood risk. In conclusion, it is possible to state that large-scale modelling as described above is particularly useful for an effective understanding of river dynamics.

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“…[12]. Among the natural factors influencing the temporal and spatial evolution of the shoreline [13], [14], the action of wave motion [15]- [21] and the interaction between longshore and river transport [22]- [28].…”

Section: Introductionmentioning

confidence: 99%

Shoreline Evolution Near the Mouth of the Petrace River, Reggio Calabria, Italy

Borrello¹,

Foti²,

Puntorieri³

2017

WIT Transactions on Ecology and the Environment

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The paper shows the shoreline evolution near the mouth of the Petrace River, which is located in the southern part of Calabria (Italy) and is the largest in the province of Reggio Calabria besides the Mesima River, whose watershed, however, mostly belongs to the province of Vibo Valentia. From a morphometric point of view, it has an area of over 420 km 2 , has a maximum height of 1900 m (originating in the massive of Aspromonte) and has an average height of about 550 m. From a hydrographic point of view, it has a main stream length of more than 40 km, has Horton's order of 7, and is characterized by a torrential regime with an annual average flow rate of about 8 m 3 /h. The river mouth is situated in the Tyrrhenian Sea between the municipalities of Palmi and Gioia Tauro. The shoreline evolution over the last 60 years has been studied using the QGIS software and analyzing the free cartography data of the National Cartographic Portal, the cartographies provided by the Calabria Basin Authority and satellite imagery provided by Google Earth. At the mouth of the Petrace River, both positive (in the last 10 years, in the order of tens of meters) and negative (between the 1950s and 1980s, in the order of hundreds of meters) variations of the shoreline have been observed. The paper also analyzes the main factors influencing the coastal dynamics, in particular the longshore and river transport, the deep-water wave climate, the rainfall regime, the variations in soil use and the presence of hydraulic structures.

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Return Period of a Sea Storm with at Least Two Waves Higher than a Fixed Threshold

Cited by 17 publications

References 22 publications

Estimation of Downtime and of Missed Energy Associated with a Wave Energy Converter by the Equivalent Power Storm Model

Estimation of Downtime and of Missed Energy Associated with a Wave Energy Converter by the Equivalent Power Storm Model

Morphodynamic Analysis of the Tuccio River, South Calabria, Italy

Shoreline Evolution Near the Mouth of the Petrace River, Reggio Calabria, Italy

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