Comparing a quasi-3D to a full 3D nearshore circulation model: SHORECIRC and ROMS

Haas, Kevin A.; Warner, John C.

doi:10.1016/j.ocemod.2008.09.003

Cited by 71 publications

(51 citation statements)

References 31 publications

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“…We reproduce test B experiments of Haller et al (2002) performed in the basin of the Ocean Engineering Laboratory (University of Delaware). Previous modelers have reproduced this experiment with the SHORECIRC model (Haas et al, 2003), with MARS (Bruneau, 2009), and also with ROMS using the wave forcing radiation stress approach of Haas and Warner (2009). The size of the modeled basin is 15.8 m in the cross-shore direction x and 18.6 m in the alongshore direction y.…”

Section: A Barred Beach With Rip Currentmentioning

confidence: 97%

“…It was initially posed by Haas and Warner (2009), hereinafter named HW09 and more recently by Uchiyama et al (2010), hereinafter called UMS10. HW09 compared two hydrodynamic models: the quasi-3-D model SHORECIRC and the 3-D model ROMS (Shchepetkin and McWilliams, 2005), where wave forcing followed the depth-dependent radiation stress formalism of Mellor (2003).…”

Section: A Normal Plane Beach Test Casementioning

confidence: 99%

“…The wave forcing is performed by wave generation and propagation models WAVEWATCH III ® (Tolman, 2008(Tolman, , 2009Ardhuin et al, 2010) and SWAN (Booij et al, 1999). The model is tested and compared with other models for a plane beach test case, previously tested by Haas and Warner (2009) and Uchiyama et al (2010). A comparison is also made with the laboratory measurements of Haller et al (2002) of a barred beach with channels.…”

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confidence: 99%

“…Uchiyama et al, 2010;Haas and Warner, 2009;Weir et al, 2011). Few studies and measurements have been dedicated to the mid-shelf zone (with water depths of order 100 m), or at least to the inner shelf (between the surf zone and mid shelf): Lentz et al (1999Lentz et al ( , 2008 were one of the first to study the influence of waves on the inner shelf.…”

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confidence: 99%

“…Section 3 describes two academic test cases of the surf zone. The first is on an idealized plane beach submitted to obliquely incident spectral waves (a case also tested by Warner, 2009, andUchiyama et al, 2010). The second case tests the ability of the model to correctly reproduce rip currents generated by a barred beach, by simulating the test B experiment of Haller et al, 2002).…”

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confidence: 99%

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Three-dimensional modelling of wave-induced current from the surf zone to the inner shelf

et al. 2012

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Abstract. We develop and implement a new method to take into account the impact of waves into the 3-D circulation model SYMPHONIE (Marsaleix et al., 2008(Marsaleix et al., , 2009a following the simplified equations of , which use glm2z-RANS theory (Ardhuin et al., 2008c). These adiabatic equations are completed by additional parameterizations of wave breaking, bottom friction and wave-enhanced vertical mixing, making the forcing valid from the surf zone through to the open ocean. The wave forcing is performed by wave generation and propagation models WAVEWATCH III ® (Tolman, 2008(Tolman, , 2009Ardhuin et al., 2010) and SWAN (Booij et al., 1999). The model is tested and compared with other models for a plane beach test case, previously tested by Haas and Warner (2009) Finally, a realistic case is simulated with energetic waves travelling over a coast of the Gulf of Lion (in the northwest of the Mediterranean Sea) for which currents are available at different depths as well as an accurate bathymetric database of the 0-10 m depth range. A grid nesting approach is used to account for the different forcings acting at different spatial scales. The simulation coupling the effects of waves and currents is successful to reproduce the powerful northward littoral drift in the 0-15 m depth zone. More precisely, two distinct cases are identified: When waves have a normal angle of incidence with the coast, they are responsible for complex circulation cells and rip currents in the surf zone, and when they travel obliquely, they generate a northward littoral drift. These features are more complicated than in the test cases, due to the complex bathymetry and the consideration of wind and non-stationary processes. Wave impacts in the inner shelf are less visible since wind and regional circulation seem to be the predominant forcings. Besides, a discrepancy between model and observations is noted at that scale, possibly linked to an underestimation of the wind stress.This three-dimensional method allows a good representation of vertical current profiles and permits the calculation of the shear stress associated with waves and currents. Future work will focus on the combination with a sediment transport model.

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Section: A Barred Beach With Rip Currentmentioning

confidence: 97%

Section: A Normal Plane Beach Test Casementioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Three-dimensional modelling of wave-induced current from the surf zone to the inner shelf

et al. 2012

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Surf zone bathymetry and circulation predictions via data assimilation of remote sensing observations

Wilson

Özkan-Haller

Holman

et al. 2014

J. Geophys. Res. Oceans

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Bathymetry is a major factor in determining nearshore and surf zone wave transformation and currents, yet is often poorly known. This can lead to inaccuracy in numerical model predictions. Here bathymetry is estimated as an uncertain parameter in a data assimilation system, using the ensemble Kalman filter (EnKF). The system is tested by assimilating several remote sensing data products, which were collected in September 2010 as part of a field experiment at the U.S. Army Corps of Engineers Field Research Facility (FRF) in Duck, NC. The results show that by assimilating remote sensing data alone, nearshore bathymetry can be estimated with good accuracy, and nearshore forecasts (e.g., the prediction of a rip current) can be improved. This suggests an application where a nearshore forecasting model could be implemented using only remote sensing data, without the explicit need for in situ data collection.

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Effects of waves on coastal water dispersion in a small estuarine bay

et al. 2014

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[1] A three-dimensional wave-current model is used to investigate wave-induced circulations in a small estuarine bay and its impact on freshwater exchanges with the inner shelf, related to stratified river plume dispersion. Modeled salinity fields exhibit a lower salinity surface layer due to river outflows, with typical depth of 1 m inside the bay. The asymmetric wave forcing on the bay circulation, related to the local bathymetry, significantly impacts the river plumes. It is found that the transport initiated in the surf zone by the longshore current can oppose and thus reduce the primary outflow of freshwater through the bay inlets. Using the model to examine a high river runoff event occurring during a high-energy wave episode, waves are found to induce a 24 h delay in freshwater evacuation. At the end of the runoff event, waves have reduced the freshwater flux to the ocean by a factor 5, and the total freshwater volume inside the bay is increased by 40%. According to the model, and for this event, the effect of the surf zone current on the bay flushing is larger than that of the wind. The freshwater balance is sensitive to incident wave conditions. Maximum freshwater retention is found for intermediate offshore wave heights 1 m < H s < 2 m. For higher-energy waves, the increase in the longshore current reduces the retention, which is two times lower for H s 5 4 m than for H s 5 2 m.

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Comparing a quasi-3D to a full 3D nearshore circulation model: SHORECIRC and ROMS

Cited by 71 publications

References 31 publications

Three-dimensional modelling of wave-induced current from the surf zone to the inner shelf

Three-dimensional modelling of wave-induced current from the surf zone to the inner shelf

Surf zone bathymetry and circulation predictions via data assimilation of remote sensing observations

Effects of waves on coastal water dispersion in a small estuarine bay

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