An unstructured-grid finite-volume surface wave model (FVCOM-SWAVE): Implementation, validations and applications

Qi, Jianhua; Chen, Changsheng; Beardsley, Robert C.; Perrie, Will; Cowles, Geoffrey W.; Lai, Zhigang

doi:10.1016/j.ocemod.2009.01.007

Cited by 149 publications

(94 citation statements)

References 20 publications

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“…Relative to buoy observations along the Northeast coast of USA, the model was shown to have a RMS error of 0.5 m and 3.6 s, and bias of -0.15 m and -2.2 s, for significant wave heights and peak periods, respectively. These results are comparable to those of other modern wave models, such as an unstructured grid version of WW3 described by Roland et al (2012), and an unstructured version of SWAN wave model described by Qi et al (2009).…”

Section: Wave Modelsupporting

confidence: 81%

Modelling seabed shear stress, sediment mobility, and sediment transport in the Bay of Fundy

et al. 2015

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Information about seabed stability and sediment dynamics is part of the fundamental geoscience knowledge required for the extraction of tidal energy in the Bay of Fundy and for the integrated management of the Bay. Waves, tidal currents, and wind-driven and circulation currents were obtained from oceanographic models to assess the wave and current processes for the broader Bay of Fundy. The wave and current outputs were coupled with observed grain size in a sediment transport model to predict, for the first time, the seabed shear stresses, sediment mobility, and sediment transport patterns for the entire Bay. The root mean square tidal current, highest in the upper Bay (>1.4 m·s −1 ), is reduced to moderate in the central Bay (0.5-0.8 m·s −1 ) and decreases further in the outer Bay (0.2-0.5 m·s −1 ). The maximum tidal current occurs in the Minas Passage and is >5 m·s −1 . The mean significant wave height, in contrast, is the greatest in the outer Bay (ϳ1.3 m) and gradually decreases to the northeast in the central and upper Bay (<0.5 m). Seabed shear in the Bay of Fundy is mostly due to tides, and wave effects are only important in coastal areas. The strongest mean shear velocity of 10 cm·s −1 occurs in the Minas Passage area. Strong shear velocity of 4-5 cm·s −1 also occurs in Minas Basin, in the central Bay, and in the narrows around Grand Manan Island. Sediment mobilization in the Bay of Fundy is predominantly by tidal current. Mobilization frequency is >30% of the time over most of the Bay and reaches 100% of the time in some areas. The maximum total-load sediment transport rate under spring tide can reach ϳ5 kg·m −1 ·s −1 and is to the northeast during flood and to the southwest during ebb. Net sediment transport flux, however, is dominantly to the northeast and reaches 2 kg·m −1 ·s −1 . Eddies of net transport are found to occur around headlands and at the narrows of Grand Manan Island, largely due to the occurrence of eddies of residual tidal flows. The regional distribution of substrate types and bedform fields and patterns of seabed erosion and deposition are well correlated with tidal current strength and sediment transport patterns.Résumé : Des données concernant la stabilité du plancher océanique et la dynamique des sédiments constituent une partie fondamentale des connaissances géologiques requises pour l'extraction de l'énergie marémotrice dans la baie de Fundy et pour une gestion intégrée de la baie. Les vagues, les courants de marée, les courants poussés par les vents et les courants de circulation ont été obtenus de modèles océanographiques afin d'évaluer les processus des vagues et des courants pour l'ensemble de la baie de Fundy. Les données de sortie sur les vagues et les courants ont été jumelées aux granulométries observées dans un modèle de transport de sédiments afin de prédire, pour la première fois, les contraintes de cisaillement sur le plancher océanique, la mobilité des sédiments et les patrons de transport pour toute la baie. Le courant de marée moyen quadratique, plus éle...

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Section: Wave Modelsupporting

confidence: 81%

Modelling seabed shear stress, sediment mobility, and sediment transport in the Bay of Fundy

et al. 2015

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“…NECOFS is a coupled atmospheric-ocean model system, with a mesoscale meteorological model (MM5 or WRF) [Chen et al, 2005] for surface forcing, the Gulf of Maine FVCOM (GoM-FVCOM) [Chen et al, 2011] for oceanic currents, temperature and salinity; and SWAVE [Qi et al, 2009] for surface waves. MM5 is the fifth-generation NCAR/Penn State non-hydrostatic mesoscale model [Dudhia et al, 2002] and WRF is the Weather Research and Forecast model [Skamarock et al, 2008].…”

Section: Necofsmentioning

confidence: 99%

“…SWAVE is an unstructured grid version of SWAN that was implemented into FVCOM [Qi et al, 2009]. SWAN was developed originally by Booij et al [1999] and improved by the SWAN Team [2006a;.…”

mentioning

confidence: 99%

Surface circulation in Block Island Sound and adjacent coastal and shelf regions: A FVCOM-CODAR comparison

Sun

Chen

Beardsley

et al. 2016

Progress in Oceanography

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CODAR-derived surface currents in Block Island Sound over the period of June 2000 throughSeptember 2008 were compared to currents computed using the Northeast Coastal Ocean Forecast System (NECOFS). The measurement uncertainty of CODAR-derived currents, estimated using statistics of a screened nine-year time series of hourly-averaged flow field, ranged from 3-7 cm/s in speed and 4°-14° in direction. The CODAR-derived and model-computed kinetic energy spectrum densities were in good agreement at subtidal frequencies, but the NECOFS-derived currents were larger by about 28% at semi-diurnal and diurnal tidal frequencies. The short-term (hourly to daily) current variability was dominated by the semidiurnal tides (predominantly the M 2 tide), which on average accounted for ~87% of the total kinetic energy. The diurnal tidal and subtidal variability accounted for ~4% and ~9% of the total kinetic energy, respectively. The monthly-averaged difference between the CODAR-derived and model-computed velocities over the study area was 6 cm/s or less in speed and 28° or less in direction over the study period. An EOF analysis for the low-frequency vertically-averaged model current field showed that the water transport in the Block Island Sound region was dominated by modes 1 and 2, which accounted for 89% and 7% of the total variance, respectively. Mode 1 represented a relatively stationary spatial and temporal flow pattern with a magnitude that varied with season. Mode 2 was characterized mainly by a secondary cross-shelf flow and a relatively strong along-shelf flow. Process-oriented model experiments indicated that the relatively stationary flow pattern found in mode 1 was a result of tidal rectification and its magnitude changed with seasonal stratification. Correlation analysis between the flow and wind stress suggested that the cross-shelf water transport and its 3 temporal variability in mode 2 were highly correlated to the surface wind forcing. The mode 2 derived onshore and offshore water transport, and was consistent with wind-driven Ekman theory.The along-shelf water transport over the outer shelf, where a large portion of the water flowed from upstream Nantucket Shoals, was not highly correlated to the surface wind stress.

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“…It is a 3-D model, which provides an obvious advantage over ADCIRC, which is 2-D model. Recently, an unstructured-grid and finite-volume version of the surface wave model SWAN has been developed, which is called FVCOM-SWAVE (Qi et al, 2009) and is linked with FVCOM. Moreover, its capability has been extended to enable coupled simulation combined with the effect of wavecurrent-sediment interaction (Wu et al, 2011).…”

Section: Storm Surges and Surface Wave Modelsmentioning

confidence: 99%

Numerical experiments of storm winds, surges, and waves on the southern coast of Korea during Typhoon Sanba: the role of revising wind force

Yoon

Shim

Park

et al. 2014

Nat. Hazards Earth Syst. Sci.

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Abstract. The southern coastal area of Korea has often been damaged by storm surges and waves due to the repeated approach of strong typhoons every year. The integrated model system is applied to simulate typhoon-induced winds, storm surges, and surface waves in this region during Typhoon Sanba in 2012. The TC96 planetary boundary layer wind model is used for atmospheric forcing and is modified to incorporate the effect of the land's roughness on the typhoon wind. Numerical experiments are carried out to investigate the effects of land-dissipated wind on storm surges and waves using the three-dimensional, unstructured grid, Finite Volume Coastal Ocean Model (FVCOM), which includes integrated storm surge and wave models with highly refined grid resolutions along the coastal region of complex geometry and topography. Compared to the measured data, the numerical models have successfully simulated storm winds, surges, and waves. Better agreement between the simulated and measured storm winds has been found when considering the effect of wind dissipation by land roughness. In addition, this modified wind force leads to clearly improved results in storm surge simulations, whereas the wave results have shown only slight improvement. The study results indicate that the effect of land dissipation on wind force plays a significant role in the improvement of water level modeling inside coastal areas.

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An unstructured-grid finite-volume surface wave model (FVCOM-SWAVE): Implementation, validations and applications

Cited by 149 publications

References 20 publications

Modelling seabed shear stress, sediment mobility, and sediment transport in the Bay of Fundy

Modelling seabed shear stress, sediment mobility, and sediment transport in the Bay of Fundy

Surface circulation in Block Island Sound and adjacent coastal and shelf regions: A FVCOM-CODAR comparison

Numerical experiments of storm winds, surges, and waves on the southern coast of Korea during Typhoon Sanba: the role of revising wind force

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