High-resolution wave and hydrodynamics modelling in coastal areas: operational applications for coastal planning, decision support and assessment

Samaras, Achilleas G.; Gaeta, Maria Gabriella; Miquel, Adrià Moreno; Archetti, Renata

doi:10.5194/nhess-16-1499-2016

Cited by 28 publications

(19 citation statements)

References 41 publications

(41 reference statements)

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“…Most of the numerical models used in predictive operational oceanography allow us to reproduce and predict the hydrodynamic processes, considering regional, sub-regional, and coastal scales, but do not reach spatial resolutions lower than a few hundred metres (Samaras et al, 2016). As a consequence, difficulties are encountered when typical features of coastal engineering need to be studied on a local scale.…”

Section: Introductionmentioning

confidence: 99%

“…As a consequence, difficulties are encountered when typical features of coastal engineering need to be studied on a local scale. Reliable modelling systems that can scale down from the ocean to the coastal scale have emerged as a need and the recent tendency is to develop multiscale modelling systems, based on a multiple-nesting approach (Samaras et al, 2016). All these models have to face three difficult limitations to provide reliable results on the circulation in the basin.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of data characterizing tide and current fluxes in coastal basins

Armenio

Serio

Mossa

2017

Hydrol. Earth Syst. Sci.

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Abstract. Many coastal monitoring programmes have been carried out to investigate in situ hydrodynamic patterns and correlated physical processes, such as sediment transport or spreading of pollutants. The key point is the necessity to transform this growing amount of data provided by marine sensors into information for users. The present paper aims to outline that it is possible to recognize the recurring and typical hydrodynamic processes of a coastal basin, by conveniently processing some selected marine field data. The illustrated framework is made up of two steps. Firstly, a sequence of analysis with classic methods characterized by low computational cost was executed in both time and frequency domains on detailed field measurements of waves, tides, and currents. After this, some indicators of the hydrodynamic state of the basin were identified and evaluated. Namely, the assessment of the net flow through a connecting channel, the time delay of current peaks between upper and bottom layers, the ratio of peak ebb and peak flood currents and the tidal asymmetry factor exemplify results on the vertical structure of the flow, on the correlation between currents and tide and flood/ebb dominance. To demonstrate how this simple and generic framework could be applied, a case study is presented, referring to Mar Piccolo, a shallow water basin located in the inner part of the Ionian Sea (southern Italy).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of data characterizing tide and current fluxes in coastal basins

Armenio

Serio

Mossa

2017

Hydrol. Earth Syst. Sci.

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“…T R = 2 years 1.00 8.5 260 T R = 100 years 1.70 11.0 265 gular meshes as recently applied by Samaras et al (2016) and Gaeta et al (2016). The adopted bathymetric and shoreline data result from the digitisation of nautical charts acquired from the Italian Hydrographic Institute.…”

Section: Design Waves From Nwmentioning

confidence: 99%

Wave simulation for the design of an innovative quay wall: the case of Vlorë Harbour

Antonini

Archetti

Lamberti

2017

Nat. Hazards Earth Syst. Sci.

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Abstract. Sea states and environmental conditions are basic data for the design of marine structures. Hindcasted wave data have been applied here with the aim of identifying the proper design conditions for an innovative quay wall concept. In this paper, the results of a computational fluid dynamics model are used to optimise the new absorbing quay wall of Vlorë Harbour (Republic of Albania) and define the design loads under extreme wave conditions. The design wave states at the harbour entrance have been estimated analysing 31 years of hindcasted wave data simulated through the application of WaveWatch III. Due to the particular geography and topography of the Bay of Vlorë, wave conditions generated from the north-west are transferred to the harbour entrance with the application of a 2-D spectral wave module, whereas southern wave states, which are also the most critical for the port structures, are defined by means of a wave generation model, according to the available wind measurements. Finally, the identified extreme events have been used, through the NewWave approach, as boundary conditions for the numerical analysis of the interaction between the quay wall and the extreme events. The results show that the proposed method, based on numerical modelling at different scales from macro to meso and to micro, allows for the identification of the best site-specific solutions, also for a location devoid of any wave measurement. In this light, the objectives of the paper are two-fold. First, they show the application of sea condition estimations through the use of wave hindcasted data in order to properly define the design wave conditions for a new harbour structure. Second, they present a new approach for investigating an innovative absorbing quay wall based on CFD modelling and the NewWave theory.

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“…Coupled wave-2-D hydrodynamics modeling was discussed and validated in Samaras et al (2016), based on the intercomparison of the TELEMAC suite and the well-known commercial software MIKE21 by the DHI © group.…”

Section: Multiple-nesting Approach and Model Descriptionmentioning

confidence: 99%

“…The wave spectra are discretized to 16 directions, with a bandwidth of 24 • . Nonlinear energy conservative processes are included in the model setup according to the authors' experience reported in Samaras et al (2016). The model of Hasselmann et al (1973) is used for bottom friction dissipation using a constant friction coefficient.…”

Section: Field Data Collectionmentioning

confidence: 99%

A coupled wave–3-D hydrodynamics model of the Taranto Sea (Italy): a multiple-nesting approach

Gaeta

Samaras

Federico

et al. 2016

Nat. Hazards Earth Syst. Sci.

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Abstract. The present work describes an operational strategy for the development of a multiscale modeling system, based on a multiple-nesting approach and open-source numerical models. The strategy was applied and validated for the Gulf of Taranto in southern Italy, scaling large-scale oceanographic model results to high-resolution coupled wave-3-D hydrodynamics simulations for the area of Mar Grande in the Taranto Sea. The spatial and temporal high-resolution simulations were performed using the open-source TELEMAC suite, forced by wind data from the COSMO-ME database, boundary wave spectra from the RON buoy at Crotone and results from the Southern Adriatic Northern Ionian coastal Forecasting System (SANIFS) regarding sea levels and current fields. Model validation was carried out using data collected in the Mar Grande basin from a fixed monitoring station and during an oceanographic campaign in October 2014. The overall agreement between measurements and model results in terms of waves, sea levels, surface currents, circulation patterns and vertical velocity profiles is deemed to be satisfactory, and the methodology followed in the process can constitute a useful tool for both research and operational applications in the same field and as support of decisions for management and design of infrastructures.

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High-resolution wave and hydrodynamics modelling in coastal areas: operational applications for coastal planning, decision support and assessment

Cited by 28 publications

References 41 publications

Analysis of data characterizing tide and current fluxes in coastal basins

Analysis of data characterizing tide and current fluxes in coastal basins

Wave simulation for the design of an innovative quay wall: the case of Vlorë Harbour

A coupled wave–3-D hydrodynamics model of the Taranto Sea (Italy): a multiple-nesting approach

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