scholarly journals Coastal Flooding Hazard Due to Overflow Using a Level II Method: Application to the Venetian Littoral

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 134 ◽  
Author(s):  
Chiara Favaretto ◽  
Luca Martinelli ◽  
Piero Ruol
Keyword(s):  
Regional Scale ◽  
Coastal Flooding ◽  
Processing Unit ◽  
Hazard Maps ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Flooding Hazard ◽  
Level Ii ◽  
Reliability Method ◽  
Inland Flooding

In recent years, marine flooding and its impacts have become a question of growing interest, since coastal areas are the most heavily populated and developed land zones in the world. This paper presents a rapid tool for mapping at regional scale the hazard associated with coastal flooding due to overflow. The tool merges a recently developed numerical model that solves a simplified form of the Shallow-Water Equations and is suited for Graphic Processing Unit (GPU) acceleration, with a Level II reliability method that allows producing hazard maps of inland flooding propagation. The procedure was applied to two stretches of the Venetian littoral, i.e., Valle Vecchia and Caorle, located in the northern Adriatic Sea. The application includes the site descriptions and the resulting hazard maps that show the probability of failure in each point of the coast for a given inland inundation level.

A methodology to estimate wave-induced coastal flooding hazard maps in Spain

2015 ◽  
Vol 9 (3) ◽  
pp. 289-305 ◽  
Author(s):  
A. Tomás ◽  
F.J. Méndez ◽  
R. Medina ◽  
F.F. Jaime ◽  
P. Higuera ◽  
...  
Keyword(s):  
Coastal Flooding ◽  
Hazard Maps ◽  
Flooding Hazard ◽  
Wave Induced

scholarly journals VULNERABILITY TO COASTAL FLOODING INDUCED BY TROPICAL CYCLONES

2011 ◽  
Vol 1 (32) ◽  
pp. 19 ◽  
Author(s):  
Gregorio Posada-Vanegas ◽  
Gerardo Durán-Valdez ◽  
Rodolfo Silva-Casarin ◽  
Maria Elena Maya-Magaña ◽  
Jose Antonio Salinas-Prieto
Keyword(s):  
Tropical Cyclones ◽  
Storm Surge ◽  
Natural Hazard ◽  
Numerical Models ◽  
Coastal Flooding ◽  
Return Periods ◽  
Hazard Maps ◽  
Flooding Hazard ◽  
Reduce Risk ◽  
2D Numerical Model

Hurricanes are a recurrent feature on Mexican coasts; they create floods whose economic and social damages are evident. The necessity to evaluate the natural hazard related to storm surge is fundamental to reduce risk in coastal areas. In order to generate flooding hazard maps, storm surge associated to different return periods is computed with a 2D numerical model. The first part of this work is related with the data and numerical models used to calculate the storm surge, the second part contain the results obtained with the simulations. This work has been done for the entire Mexican coastline but only results for the Gulf of Mexico are presented

A trail of crumbs: ancient geomorphological indicators of past sea-level rise in the Northern Adriatic Sea (Italy)

2021 ◽  
Author(s):  
Livio Ronchi ◽  
Alessandro Fontana ◽  
Annamaria Correggiari
Keyword(s):  
Sea Level ◽  
Adriatic Sea ◽  
Regional Scale ◽  
Seismic Profiles ◽  
Tidal Inlets ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
Marine Transgression ◽  
Sea Levels ◽  
Sediment Dispersal

<p>The reconstruction of timing and modes of the last marine transgression is often hampered by the scarceness of available indicators, which is caused by bad preservation, lack of formation or difficult accessibility.</p><p>This is particularly true for the first period of the Holocene, between 7 ka and 11 ka cal, when the rate of transgression was high (hence little to absent formation of possible indicators) and the sea level was placed below ca. -20 m MSL (hence scarce accessibility).</p><p>Shoreline deposits and erosional landforms have long been recognized as geomorphological indicators of past sea levels. Such indicators (e.g. beach ridges, tidal notches) can be both submerged or exposed due to RSL variations of coastal progradation.</p><p>A major group of potential indicators which, up to date, is largely underrepresented, is constituted by paleo tidal inlets. Being excavated up to several meters below the surrounding lagoon and filled during the migration or deactivation of the inlet, such landforms may represent outstanding archives with a potentially high chance of preservation from erosion. Paleo tidal inlets can be easily recognized and cataloged through shallow sub-bottom profiling methods.</p><p>The analysis of almost 7000 km of high resolution seismic profiles collected in the northern Adriatic Sea allowed to recognized almost 100 paleo tidal inlets dating to the early Holocene, which constitute the only widespread witnesses of the post-LGM marine transgression in the area. Paleo tidal inlets are essential features to the paleo-geographic and -environmental reconstruction and provide new data to constrain the position of the transgressive coastlines. The presence of widespread lagoon environments during a phase of strong RSL rise comes from the interplay between sediment dispersal operated by the main fluvial actors of the area and phases of slowdown of the RSL rise. This study sheds light on the phenomena affecting coastal plains in response to RSL rise and constitutes the first report of an extensive distribution of paleo tidal inlets on a regional scale.</p>

Analisys of recent snow volumic mass and elevation of the threshold of natural skiability (lan) in the frioulan alps

2020 ◽  
Author(s):  
Massimiliano Fazzini ◽  
Alessandro Cecili ◽  
Enrico Miccadei ◽  
Daniele Moro ◽  
Carlo Bisci
Keyword(s):  
Regional Scale ◽  
Winter Season ◽  
Thermal Characteristics ◽  
Northern Adriatic Sea ◽  
Northern Adriatic ◽  
The North ◽  
Historical Series ◽  
Positive Variation ◽  
Julian Alps ◽  
Northern Side

<p>The Friulian Alps show peculiar meteorologica and climatic features, deriving also from their geographic position between the northern Adriatic Sea to the South, the main Alpine watershed to the North (Tauern Alps) and the Carpathian belt to the East. Furthermore, there are many topoclimatic situations in relation to the geographic setting of the valleys carved between the main reliefs. This makes the Frioulian territory among the wettest in the entire Alpine region, with very abundant snowfall in relation to the moderate average altitude. Thanks to the availability of continuous and fairly homogeneously distributed historical series, a nivological characterization was carried out at the regional scale, with particular attention to the trend of the density of fresh snow, of the number of days with snow thickness higher than 30 cm and the consequent average elevation of the threshold of 100 skiable days (LAN). The ten snow fields under examination are located at elevations between 603 m. (Claut, Carnic Prealps) and 1843 m. (Rifugio Gilberti, Julian Alps); the analysed timespan goes from the winter season 1990-91 to the 2018-19. Surprising data resulted from this analysis. First of all, we noted that the volume mass (Kg /m<sup>3</sup>), which cannot be correlated with altitude, tends to a very light decrease (about 1.3 km/mc for year) in all the recording stations: this seems to be in contrast with the strong thermal increase that is occurring also on the Frioulian Alps (about 1.1°C in the same time span). Therefore, it’s very probable that in the last few years the thermal characteristics have changed, maybe together with the main origin of the air masses bringing snow in the study area. We also noted for all the stations an increase in the number of days with Hs> 30 cm: consequently, the average elevation of the limit of 100 days with natural ski possible is at about 1780 m a.s.l. and tends to decrease by about 7 meters per year (14 m in the nearby Slovenian Alps), even though it cannot be correlated with the aforementioned positive variation in temperatures and is in disagreement with the corresponding signals calculated for the northern side of the Alps.</p>

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