The Influence of Unsteady Depths and Currents of Tides on Wind-Wave Propagation in Shelf Seas

Tolman, H. L.

doi:10.1175/1520-0485(1990)020<1166:tiouda>2.0.co;2

Cited by 55 publications

(28 citation statements)

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“…Fig.7 also qualitatively confirms that wave energy increases in a direction opposite to current and decreases in the same direction as the current due to changes in group velocity. This result is consistent with the previous findings by Tolman (1990).…”

Section: Wave Resultssupporting

confidence: 94%

A FVCOM-based unstructured grid wave, current, sediment transport model, I. Model description and validation

Chen

Peifang

et al. 2011

J. Ocean Univ. China

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An effort was made to couple FVCOM (a three-dimensional (3D), unstructured grid, Finite Volume Coastal Ocean Model) and FVCOM-SWAVE (an unstructured grid, finite-volume surface wave model) for the study of nearshore ocean processes such as tides, circulation, storm surge, waves, sediment transport, and morphological evolution. The coupling between FVCOM and FVCOM-SWAVE was achieved through incorporating 3D radiation stress, wave-current-sediment-related bottom boundary layer, sea surface stress parameterizations, and morphology process. FVCOM also includes a 3D sediment transport module. With accurate fitting of irregular coastlines, the model provides a unique tool to study sediment dynamics in coastal ocean, estuaries, and wetlands where local geometries are characterized by inlets, islands, and intertidal marsh zones. The model was validated by two standard benchmark tests: 1) spectral waves approaching a mild sloping beach and 2) morphological changes of seabed in an idealized tidal inlet. In Test 1, model results were compared with both analytical solutions and laboratory experiments. A further comparison was also made with the structured grid Regional Ocean Model System (ROMS), which provides an insight into the performance of the two models with the same open boundary forcing.

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Section: Wave Resultssupporting

confidence: 94%

A FVCOM-based unstructured grid wave, current, sediment transport model, I. Model description and validation

Chen

Peifang

et al. 2011

J. Ocean Univ. China

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“…Tolman [19,20] derived closed-form relations valid over short space/time scales and also attempted to explain observations in the North Sea. He used the principle of conservation of wave action, following Phillips [21].…”

Section: Previous Wave-current Interaction Studiesmentioning

confidence: 99%

Brahan Project High Frequency Radar Ocean Measurements: Currents, Winds, Waves and Their Interactions

et al. 2014

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Abstract:We describe radar measurements of waves, currents and winds made on the coast of northern Scotland during two 2013/14 winter storms, giving methods, results and interpretation. Wave parameters (height, period, direction and short-wave/wind direction) were derived and compared with measurements made by a neighboring buoy and local weather stations. Wind direction and current velocity maps were produced and the interactions of winds and currents discussed. Significant oscillations in wave parameters were observed, which appear to be due to forcing by tidal current velocity variations. The oscillations in waveheight are explained using hydrodynamic analysis and derived amplitudes are compared with radar measurements.

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“…Wave-current interactions have mainly been investigated within the framework of linear theory based on the wave-ray model (e.g., Kenyon 1971;Mei 1989) or the propagation equation of wave-action density (e.g., Tolman 1990;Jonsson 1990;Hubbert and Wolf 1991). These studies provided us with a good understanding of the mechanisms of ray focusing, spectral modulation, and energy convergence due to wave refraction and/or straining.…”

Section: Introductionmentioning

confidence: 99%

Current-Induced Modulation of the Ocean Wave Spectrum and the Role of Nonlinear Energy Transfer

Tamura

Waseda

Miyazawa

et al. 2008

Journal of Physical Oceanography

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Numerical simulations were performed to investigate current-induced modulation of the spectral and statistical properties of ocean waves advected by idealized and realistic current fields. In particular, the role of nonlinear energy transfer among waves in wave-current interactions is examined. In this type of numerical simulation, it is critical to treat the nonlinear transfer function (Snl) properly, because a rigorous Snl algorithm incurs a huge computational cost. However, the applicability of the widely used discrete interaction approximation (DIA) method is strictly limited for complex wave fields. Therefore, the simplified RIAM (SRIAM) method is implemented in an operational third-generation wave model. The method approximates an infinite resonant quadruplet with 20 optimized resonance configurations. The performance of the model is assessed by applying it to fetch-limited wave growth and wave propagation against a shear current. Numerical simulations using the idealized current field revealed that the Snl retained spectral form by redistributing the refracted wave energy; this suggests that energy concentration due to ray focusing is dispersed via the self-stabilization effect of nonlinear transfer. A hindcast simulation using wind and current reanalysis data indicated that the difference in the average monthly wave height was substantial and that instantaneous wave-current interactions were highly sensitive to small current structures. Spectral shape was also modulated, and the spatial distributions of the directional bandwidth with or without current data were completely different. Moreover, the self-stabilization effect of the Snl was also confirmed in a realistic situation. These results indicate that a realistic representation of the current field is crucial for highresolution wave forecasting.

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The Influence of Unsteady Depths and Currents of Tides on Wind-Wave Propagation in Shelf Seas

Cited by 55 publications

References 0 publications

A FVCOM-based unstructured grid wave, current, sediment transport model, I. Model description and validation

A FVCOM-based unstructured grid wave, current, sediment transport model, I. Model description and validation

Brahan Project High Frequency Radar Ocean Measurements: Currents, Winds, Waves and Their Interactions

Current-Induced Modulation of the Ocean Wave Spectrum and the Role of Nonlinear Energy Transfer

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