Exploring the shelf-slope dynamics in the Adriatic Sea using numerical models and seismic oceanography

2013 ◽  
Vol 133 (5) ◽  
pp. 3313-3313
Author(s):  
Andrea Bergamasco ◽  
Francesco Falcieri ◽  
Jeff W. Book ◽  
Sandro Carniel ◽  
Warren W. Wood ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Numerical Models ◽  
Seismic Oceanography ◽  
Shelf Slope

scholarly journals Exploring the shelf-slope dynamics in the Adriatic Sea using numerical models and seismic oceanography (SO)

2013 ◽  
Author(s):  
Andrea Bergamasco ◽  
Francesco M. Falcieri ◽  
Jeffrey W. Book ◽  
Sandro Carniel ◽  
Warren T. Wood ◽  
...  
Keyword(s):  
Adriatic Sea ◽  
Numerical Models ◽  
Seismic Oceanography ◽  
Shelf Slope

scholarly journals The Adriatic Sea modelling system: a nested approach

2003 ◽  
Vol 21 (1) ◽  
pp. 345-364 ◽  
Author(s):  
M. Zavatarelli ◽  
N. Pinardi
Keyword(s):  
General Circulation ◽  
Adriatic Sea ◽  
Numerical Models ◽  
Pilot Project ◽  
Northern Adriatic ◽  
Dense Water Formation ◽  
Main Circulation ◽  
Forecasting System ◽  
Modelling System ◽  
Circulation Characteristics

Abstract. A modelling system for the Adriatic Sea has been built within the framework of the Mediterranean Forecasting System Pilot Project. The modelling system consists of a hierarchy of three numerical models (whole Mediterranean Sea, whole Adriatic Sea, Northern Adriatic Basin) coupled among each other by simple one-way, off-line nesting techniques, to downscale the larger scale flow field to highly resolved coastal scale fields. Numerical simulations have been carried out under climatological surface forcing. Simulations were aimed to assess the effectiveness of the nesting techniques and the skill of the system to reproduce known features of the Adriatic Sea circulation phenomenology (main circulation features, dense water formation,flow at the Otranto Strait and coastal circulation characteristics over the northern Adriatic shelf), in view of the pre-operational use of the modelling system. This paper describes the modelling system setup, and discusses the simulation results for the whole Adriatic Sea and its northern basin, comparing the simulations with the observed climatological circulation characteristics. Results obtained with the northern Adriatic model are also compared with the corresponding simulations obtained with the coarser resolution Adriatic model. Key words. Oceanography: general (continental shelf processes; numerical modelling) – Oceanography: physical (general circulation)

scholarly journals Coupled Wave-2D Hydrodynamics Modeling at the Reno River Mouth (Italy) under Climate Change Scenarios

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1380 ◽  
Author(s):  
Maria Gabriella Gaeta ◽  
Davide Bonaldo ◽  
Achilleas G. Samaras ◽  
Sandro Carniel ◽  
Renata Archetti
Keyword(s):  
Climate Change ◽  
Open Source ◽  
Climate Changes ◽  
Adriatic Sea ◽  
Numerical Study ◽  
Numerical Models ◽  
Joint Probability ◽  
River Mouth ◽  
Climate Change Scenarios ◽  
Coupled Wave

This work presents the results of the numerical study implemented for the natural area of Lido di Spina, a touristic site along the Italian coast of the North Adriatic Sea, close to the mouth of River Reno. High-resolution simulations of nearshore dynamics are carried out under climate change conditions estimated for the site. The adopted modeling chain is based on the implementation of multiple-nested, open-source numerical models. More specifically, the coupled wave-2D hydrodynamics runs, using the open-source TELEMAC suite, are forced at the offshore boundary by waves resulting from the wave model (SWAN) simulations for the Adriatic Sea, and sea levels computed following a joint probability analysis approach. The system simulates present-day scenarios, as well as conditions reflecting the high IPCC greenhouse concentration trajectory named RCP8.5 under predicted climate changes. Selection of sea storms directed from SE (Sirocco events) and E–NE (Bora events) is performed together with Gumbel analysis, in order to define ordinary and extreme sea conditions. The numerical results are here presented in terms of local parameters such as wave breaking position, alongshore currents intensity and direction and flooded area, aiming to provide insights on how climate changes may impact hydrodynamics at a site scale. Although the wave energy intensity predicted for Sirocco events is expected to increase only slightly, modifications of the wave dynamics, current patterns, and inland flooding induced by climate changes are expected to be significant for extreme conditions, especially during Sirocco winds, with an increase in the maximum alongshore currents and in the inundated area compared to past conditions.

Techniques in coastal seismic oceanography: An example in the Adriatic Sea

2011 ◽  
Vol 130 (4) ◽  
pp. 2340-2340
Author(s):  
Warren Wood ◽  
Richard Hobbs ◽  
Jeffrey Book ◽  
Sandro Carniel
Keyword(s):  
Adriatic Sea ◽  
Seismic Oceanography

scholarly journals Modelling origin and transport fate of waste materials on the south-eastern Adriatic coast (Croatia)

2014 ◽  
Vol 11 (6) ◽  
pp. 2939-2969
Author(s):  
M. Tudor ◽  
I. Janeković
Keyword(s):  
Adriatic Sea ◽  
Flash Flood ◽  
Numerical Models ◽  
Remote Sensing Data ◽  
Water Levels ◽  
Waste Material ◽  
Ocean Current ◽  
The South ◽  
South Eastern ◽  
Adriatic Coast

Abstract. The south-eastern parts of the Adriatic Sea coastline were severely polluted by large amounts of accumulated waste material in the second half of November 2010. The waste, reported by major news agencies, accumulated dominantly during 21 November 2010 by favourable wind – ocean current transport system. In the study we analysed meteorological and oceanographic conditions that lead to the waste deposition using available in situ measurements, remote sensing data as well numerical models of the ocean and the atmosphere. The measured data reveal that an intensive rainfall event from 7 till 10 November 2010, over the parts of Montenegro and Albania, was followed by a substantial increase of the river water levels indicating flash floods that possibly splashed the waste material into a river and after to the Adriatic Sea. In order to test our hypothesis we set a number of numerical drifter experiments with trajectories initiated off the coast of Albania during the intensive rainfall events following their faith in space and time. One of the numerical drifter trajectory experiment resulted with drifters reached right position (south-eastern Adriatic coast) and time (exactly by the time the waste was observed) when initiated on 00:00 and 12:00 UTC of 10 November 2010 during the mentioned flash flood event.

scholarly journals Flux and fate of river-discharged sediments to the Adriatic Sea

2016 ◽  
Vol 1 (1S) ◽  
Author(s):  
John D. Milliman ◽  
Davide Bonaldo ◽  
Sandro Carniel
Keyword(s):  
Adriatic Sea ◽  
Numerical Models ◽  
Small Rivers ◽  
Geochemical Data ◽  
Seismic Profiling ◽  
Sediment Loads ◽  
Ocean Sediment ◽  
The Impact ◽  
High Sediment ◽  
Small Mountainous Rivers

<p>Small rivers, particularly those draining mountainous terrain, discharge disproportionately large quantities of sediment to the globalocean. Because small mountainous rivers are more susceptible to catastrophic events, they tend to discharge their sediments over relatively short periods of time, such as during floods. The impact of small mountainous rivers is especially evident on the coastal ocean, such as the Adriatic Sea where fully 75% of the estimated 145 million tons (Mt) of discharged sediment comes from rivers with basin areas smaller than 7000 km2. Within this semi-enclosed basin in the northeast of the Mediterranean Sea, of particular note are the high sediment loads of five Albanian rivers (located in the southeast), which, prior to dam construction, collectively discharged about 85 Mt yr<sup>–1</sup> perhaps much of it at hyperpycnal concentrations, which would have allowed the sediment to bypass the shelf and be deposited at greater depths. Geochemical data confirm that Albanian river sediment extends well into the southern and central Adriatic Sea. Delineating and understanding the flux and fate of Adriatic Sea sediments may be best facilitated through the reanalysis of existing river datasets and the acquisition of new river data, particularly during periodic floods, high-resolution seismic profiling coupled with sitespecific coring, as well as application of integrated ocean-sediment numerical models</p>

scholarly journals Wintertime dynamics in the coastal northeastern Adriatic Sea: the NAdEx 2015 experiment

Ocean Science ◽  
2018 ◽  
Vol 14 (2) ◽  
pp. 237-258 ◽  
Author(s):  
Ivica Vilibić ◽  
Hrvoje Mihanović ◽  
Ivica Janeković ◽  
Cléa Denamiel ◽  
Pierre-Marie Poulain ◽  
...  
Keyword(s):  
Coastal Area ◽  
Adriatic Sea ◽  
Numerical Models ◽  
Coastal Region ◽  
Dense Water ◽  
In Situ Data ◽  
Thermal Changes ◽  
Dense Water Formation ◽  
Acoustic Doppler Current Profilers

Abstract. The paper investigates the wintertime dynamics of the coastal northeastern Adriatic Sea and is based on numerical modelling and in situ data collected through field campaigns executed during the winter and spring of 2015. The data were collected with a variety of instruments and platforms (acoustic Doppler current profilers, conductivity–temperature–depth probes, glider, profiling float) and are accompanied by the atmosphere–ocean ALADIN/ROMS modelling system. The research focused on the dense-water formation (DWF), thermal changes, circulation, and water exchange between the coastal and open Adriatic. According to both observations and modelling results, dense waters are formed in the northeastern coastal Adriatic during cold bora outbreaks. However, the dense water formed in this coastal region has lower densities than the dense water formed in the open Adriatic due to lower salinities. Since the coastal area is deeper than the open Adriatic, the observations indicate (i) balanced inward–outward exchange at the deep connecting channels of denser waters coming from the open Adriatic DWF site and less-dense waters coming from the coastal region and (ii) outward flow of less-dense waters dominating in the intermediate and surface layers. The latter phenomenon was confirmed by the model, even if it significantly underestimates the currents and transports in the connecting channels. The median residence time of the coastal area is estimated to be approximately 20 days, indicating that the coastal area may be renewed relatively quickly by the open Adriatic waters. The data that were obtained represent a comprehensive marine dataset that can be used to calibrate atmospheric and oceanic numerical models and point to several interesting phenomena to be investigated in the future.

scholarly journals Storm surge in the Adriatic Sea: observational and numerical diagnosis of an extreme event

2006 ◽  
Vol 7 ◽  
pp. 371-378 ◽  
Author(s):  
L. Zampato ◽  
G. Umgiesser ◽  
S. Zecchetto
Keyword(s):  
High Resolution ◽  
Sea Level ◽  
Storm Surge ◽  
Hydrodynamic Model ◽  
Adriatic Sea ◽  
Extreme Event ◽  
Numerical Models ◽  
Limited Area ◽  
Wind Fields ◽  
Northern Adriatic

Abstract. Storm surge events occur in the Adriatic Sea, in particular during autumn and winter, often producing flooding in Venice. Sea levels are forecasted by numerical models, which require wind and pressure fields as input. Their performances depend crucially on the quality of those fields. The storm surge event on 16 November 2002 is analysed and simulated through a finite element hydrodynamic model of the Mediterranean Sea. Several runs were carried out, imposing different atmospheric forcings: wind fields from ECMWF analysis, high resolution winds from the limited area model LAMI and satellite observed winds from QuikSCAT (NASA). The performance of the hydrodynamic model in each case has been quantified. ECMWF fields are effective in reproducing the sea level in the northern Adriatic Sea, if the wind speed is enhanced by a suitable multiplying factor. High resolution winds from LAMI give promising results, permitting an accurate simulation of the sea level maxima. QuikSCAT satellite wind fields produce also encouraging results which claim, however, for further research.

scholarly journals Numerical models sea surface wind compared to scatterometer observations for a single Bora event in the Adriatic Sea

2014 ◽  
Vol 11 (1) ◽  
pp. 41-48 ◽  
Author(s):  
F. De Biasio ◽  
M. M. Miglietta ◽  
S. Zecchetto ◽  
A. della Valle
Keyword(s):  
Adriatic Sea ◽  
Numerical Models ◽  
Single Case ◽  
Surface Wind ◽  
Circulation Model ◽  
Sea Surface ◽  
Limited Area ◽  
Global Circulation Model ◽  
Statistical Parameters ◽  
Sea Surface Wind

Abstract. We compare the sea surface wind fields forecasted by a Global Circulation Model (GCM) and three Limited Area Models (LAMs) in an operational-like set-up, with the wind remotely sensed by the NASA QuikSCAT scatterometer. The comparison is performed for a single case of Bora wind in the Adriatic Sea, with the purpose to understand the ability of the model forecasts in reproducing the mesoscale features captured by the scatterometer, and to investigate on the suitability of LAM and GCM forecasts as possible forcing in storm surge models (SSMs). The performance is evaluated by means of statistical parameters regarding wind speed and direction showing that, at least in terms of classical statistical parameters, the GCM offer the most advantageous choice in terms of cost/benefit.

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