Simulation of wave damping during a cold front over the muddy Atchafalaya shelf

Siadatmousavi, Seyed Mostafa; Allahdadi, Mohammad Nabi; Chen, Qin; Jose, Felix; Roberts, Harry H.

doi:10.1016/j.csr.2012.07.012

Cited by 24 publications

(9 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Siadatmousavi et al [18] applied Muller's method for the root finding of the dispersion relation. The Muller's method is a trial method, which requires three initial values for starting the iterations.…”

Section: Solution Techniquementioning

confidence: 99%

A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

et al. 2019

View full text Add to dashboard Cite

The interactions between free surface waves and layers of cohesive sediments including wave height attenuation and mud movement are of great importance in coastal and marine engineering. In this study, the results from a new analytical model were compared with those from literature experimental works and analytical models in terms of wave height dissipation rate and mud velocity. It was found that the new model provided good agreements in the case of coexisting waves and currents, while the literature model of Ng (explained in Section 2 of the text) —assuming the mud layer as a highly viscous layer with high shear rates—matched well with the experimental data for high viscosity (mud viscosity, νm = O [0.01 m2/s]). In addition, it was found that the new model is able to successfully simulate particles velocity in the presence of co-current.

show abstract

Section: Solution Techniquementioning

confidence: 99%

A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

et al. 2019

View full text Add to dashboard Cite

show abstract

“…From October to the following April every year, the northern Gulf of Mexico (NGOM) experiences intensified cold fronts, sometimes with severe storms (Roberts et al, ). These weather systems affect the coastal NGOM significantly (e.g., Feng & Li, ; Li et al, ; Lin et al, ; Siadatmousavi et al, ; Siadatmousavi & Jose, ; Walker & Hammack, ), as well as other areas (e.g., Li & Chen, ). The passage of cold fronts can result in wind regime shifts across the area.…”

Section: Introductionmentioning

confidence: 99%

“…Studies on cold front induced sediment transport and concentration distribution in the shelf water of Gulf of Mexico and in the coastal estuaries were investigated by Perez et al(2000) and Kineke et al (2006). Siadatmousavi et al (2012) studied wave energy during a cold front and examined the thickness, density, kinematic viscosity of the mud layer.…”

Section: Introductionmentioning

confidence: 99%

Cold Front Driven Flows Through Multiple Inlets of Lake Pontchartrain Estuary

Huang

2017

JGR Oceans

View full text Add to dashboard Cite

With in situ observations using acoustic Doppler current profilers (ADCPs) and numerical experiments using the Finite Volume Coastal Ocean Model (FVCOM), this study investigates atmospheric cold front induced exchange of water between Lake Pontchartrain Estuary and coastal ocean through multiple inlets. Results show that the subtidal hydrodynamic response is highly correlated with meteorological parameters. Northerly and westerly winds tend to push water out of Lake Pontchartrain, while south and east winds tend to produce currents flowing into it. For most cases, the subtidal water level is inversely correlated with the east wind, with the correlation coefficient being ∼0.8. The most important finding of this work is that, contrary to intuition, the cold front induced remote wind effect has the greatest contribution to the overall water level variation, while the local wind stress determines the surface slope inside the estuary. It is found that wind driven flow is roughly quasi steady state: the surface slope in the north‐south direction is determined by the north‐south wind stress, explaining ∼83% of the variability but less so in the east‐west direction (∼43%). In other words, the north‐south local wind stress determines the water level gradient in that direction in the estuary while the overall water level change is pretty much controlled by the open boundary which is the “remote wind effect,” a regional response that can be illustrated only by a numerical model for a much larger area encompassing the estuary.

show abstract

“…Especially, terrestrial LiDAR has not been used for object oriented beach evolution analysis in a wave tank environment, and resolution impact has not been assessed for CMA method. In addition, although different topographic models have been used for wave modeling on various scales, the impact of resolution on wave modeling has not been discussed [23,24]. Moreover, with increasing popularity of high-resolution mapping based on terrestrial LiDAR and UAV, many users face a practical question regarding the choice of resolution to interpolate various topographic products.…”

Section: Introductionmentioning

confidence: 99%

Impact of High-Resolution Topographic Mapping on Beach Morphological Analyses Based on Terrestrial LiDAR and Object-Oriented Beach Evolution

Meng

Zhang

Silva³

et al. 2017

IJGI

View full text Add to dashboard Cite

This research applied terrestrial LiDAR for laboratory beach evolution experiments to quantify the impact of resolution on topographic mapping and change analyses. The multi-site registration and multi-temporal scanning processes produced high accuracy (−0.002 ± 0.003 m) topographic models in a wave tank environment. Morphological analyses based on surface change and profiles showed that models of all resolutions were capable of capturing major sediment changes in relatively smooth areas. However, higher resolution models were necessary in areas with rough surfaces and sudden elevation changes, while coarser resolution models smoothed the roughness and underestimated feature height (e.g., peaks and troughs). Decreasing resolutions from 1 to 10 cm resulted in a 2% underestimation of erosional volumes with a linear regression of y = −0.0964x + 0.4185 (R 2 = 0.9651) and 3.5% overestimation of depositional volumes with a linear regression of y = 0.0664x + 0.3308 (R 2 = 0.3645). However, its impact on erosion and deposition volume assessment based on object-oriented beach evolution analysis is less significant, except when fragment objects dominate the sediment changes. For Coastal Morphology Analyst (CMA), the impact of resolution is more observable through 2D object mapping in terms of object size, number, and spatial distribution. Finally, wave modeling experiments proved that resolutions caused significant changes on the behavior of the maximum wave height, the shape of the wave fronts and magnitudes of the currents.

show abstract

Simulation of wave damping during a cold front over the muddy Atchafalaya shelf

Cited by 24 publications

References 41 publications

A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

A Study of Wave Dissipation Rate and Particles Velocity in Muddy Beds

Cold Front Driven Flows Through Multiple Inlets of Lake Pontchartrain Estuary

Impact of High-Resolution Topographic Mapping on Beach Morphological Analyses Based on Terrestrial LiDAR and Object-Oriented Beach Evolution

Contact Info

Product

Resources

About