Modelling the influence of currents on wave propagation at the entrance of the Tagus estuary

Rusu, Liliana; Bernardino, Mariana; Soares, C. Guedes

doi:10.1016/j.oceaneng.2011.05.016

Cited by 44 publications

(25 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The similar results have also been found in the Altamaha River [6] and the Tagus Estuary [8]. Our main findings can provide reference for the different estuaries in the world.…”

Section: Discussionsupporting

confidence: 89%

See 1 more Smart Citation

Wave–current interaction in a river and wave dominant estuary: A seasonal contrast

Liu

Wen

Pan

et al. 2015

Applied Ocean Research

View full text Add to dashboard Cite

a b s t r a c tThe dynamic feature of the Modaomen Estuary (ME) in the Pearl River Delta in southern China has been the subject of extensive research. In previous studies, wave-current interaction (WCI) was often neglected due to its complexity. This study uses a coupled hydrodynamic module TELEMAC-2D and wave propagation module TOMAWAC in the TELEMAC-Mascaret modeling system to quantify the effects of WCI on the hydrodynamics in the ME. The coupled wave and current modeling system was well validated against the field measurements at selected locations. The model results show that WCI varies with the seasonal change in runoff in the ME. The effect of waves on the currents is insignificant during the wet season with a current change of no more than 0.07 m/s; but, in contrast, the currents have a noticeable effect on waves. However, during the dry season, the interactions of waves and currents on each other are found to be equally significant. When wave model and current model are coupled, the velocity could increase up to a maximum of 0.30 m/s and decrease up to a maximum of 0.17 m/s. WCI is greatly affected by the propagation directions of wave and current in both seasons. Generally, wave height decreases and current increases for a following wave and current; wave height increases and current decreases for an opposing wave and current. The effects of waves on currents change with the tide. Changes are larger during neap tide than during spring tide, and stronger during ebb tide than during flood tide.

show abstract

“…The similar results have also been found in the Altamaha River [6] and the Tagus Estuary [8]. Our main findings can provide reference for the different estuaries in the world.…”

Section: Discussionsupporting

confidence: 89%

“…The numerical applications demonstrated the significant influence of tidal flow on wave height variation in estuaries (e.g. [6][7][8][9]). It is widely found that wave height modulates with the tide, and an opposing tidal flow increases wave height whereas a following tidal flow decreases wave height in a coastal region.…”

Section: Introductionmentioning

confidence: 99%

Wave–current interaction in a river and wave dominant estuary: A seasonal contrast

Liu

Wen

Pan

et al. 2015

Applied Ocean Research

View full text Add to dashboard Cite

show abstract

“…[38] Among the effects of currents on the incident wavefield, summarized for instance by Wolf and Prandle [1999], the current-induced refraction, the Doppler shift of wave frequency, and the wave blocking (in the case of countercurrents) are all represented in the formulation of wave action conservation in phase-averaged wave models, with some limitations though (see section 6). Several authors tested the skills of coupled wave-current modeling systems by comparing model results either with laboratory measurements [Ris and Holthuijsen, 1996;Rusu et al, 2011] or with field data [Westhuysen, 2012]. In general, the models were able to reproduce the main effects of the ambient current on the wavefield, although some inaccuracies remained, particularly in the presence of strong opposing currents [Ris and Holthuijsen, 1996;Van Dongeren et al, 2010].…”

Section: Impact Of Currents On Wave Propagationmentioning

confidence: 99%

“…In particular, the process of wave blocking when a wavefront encounters a strong facing current has been the subject of several studies [Lai et al, 1989;Chawla and Kirby, 2002;Suastika, 2012) but remains only partially understood. Observations of the effects of currents on waves in natural environments are also mentioned in several studies [Wolf and Prandle, 1999;Rusu et al, 2011, Westhuysen, 2012], yet they are still too sparse to give a significant overview of this mechanism in complex coastal systems such as tidal inlets. Based on the results of a fully coupled ocean-atmospherewave-sediment transport modeling system, Olabarrieta et al [2011] identified the effects of wave-current interactions on the circulation of Willapa Bay (Washington State).…”

Section: Introductionmentioning

confidence: 99%

Wave‐current interactions in a wave‐dominated tidal inlet

et al. 2013

View full text Add to dashboard Cite

[1] Wave-current interactions play a major role in the dynamics of shallow tidal inlets. This study investigates these interactions at a natural inlet, with a strong focus on current-induced changes on wave propagation. The analysis of hydrodynamic data collected at the Albufeira lagoon, Portugal, revealed spatiotemporal variations of water levels and wave heights along the inlet, attributed to wave-current interaction processes. We compared the simulations of a coupled wave-circulation modeling system, computed with and without waves, and propagated with and without current feedback. The wave-induced setup inside the lagoon represented 7%-15% of the offshore significant wave height. The accuracy of the wave's predictions improved when current feedback was included. During ebb, the currents increased the wave height at the mouth of the inlet (up to 20%) and decreased the wave height in the inlet (up to 40%), due to current-induced refraction, steepness dissipation, and partial blocking. During flood, the currents decreased the wave height in the inlet (up to 10%) and increased the wave height at the exterior parts of the ebb shoal (up to 10%), due to current-induced refraction. These effects significantly attenuate seaward sediment fluxes during ebb and contribute to the sediment accretion in the inlet.Citation: Dodet, G., X. Bertin, N. Bruneau, A. B. Fortunato, A. Nahon, and A. Roland (2013), Wave-current interactions in a wave-dominated tidal inlet,

show abstract

“…At the same time, extended validations have been carried out against nearshore in situ measurements [21,22]. The tide influence was also considered in some high-resolution computational domains [23].…”

Section: Wave Modelling In the Portuguese Nearshorementioning

confidence: 99%

High-Resolution Wave Energy Assessment in Shallow Water Accounting for Tides

Silva¹,

Rusu²,

Soares³

2016

Energies

View full text Add to dashboard Cite

The wave energy in a shallow water location is evaluated considering the influence of the local tide and wind on the wave propagation. The target is the coastal area just north of the Portuguese city of Peniche, where a wave energy converter operates on the sea bottom. A wave modelling system based on SWAN has been implemented and focused on this coastal environment in a multilevel computational scheme. The first three SWAN computational belonging to this wave prediction system were defined using the spherical coordinates. In the highest resolution computational domain, Cartesian coordinates have been considered, with a resolution of 25 m in both directions. An in-depth analysis of the main characteristics of the environmental matrix has been performed. This is based on the results of eight-year model system simulations (2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012). New simulations have been carried out in the last two computational domains with the most relevant wave and wind patterns, considering also the tide effect. The results show that the tide level, together with the wind intensity and direction, may influence to a significant degree the wave characteristics. This especially concerns the wave power in the location where the wave converter operates.

show abstract

Modelling the influence of currents on wave propagation at the entrance of the Tagus estuary

Cited by 44 publications

References 15 publications

Wave–current interaction in a river and wave dominant estuary: A seasonal contrast

Wave–current interaction in a river and wave dominant estuary: A seasonal contrast

Wave‐current interactions in a wave‐dominated tidal inlet

High-Resolution Wave Energy Assessment in Shallow Water Accounting for Tides

Contact Info

Product

Resources

About