Modeling how a hurricane barrier in New Bedford Harbor, Massachusetts, affects the hydrodynamics and residence times

Abdelrhman, Mohamed A.

doi:10.1007/bf02691306

Cited by 32 publications

(24 citation statements)

References 6 publications

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“…The highest residual current, hardly exceeded 0.06 m/s. The residual currents evaluated in this study are of the same order of magnitude than those predicted by Abdelrhman (2002) who describes residual currents with maxima value of 0.07 m/s in New Bedford Harbor Massachusetts. The magnitude of residual velocities predicted in our work, also agree with the order of magnitude of residual currents (0.01 m/s) Fig.…”

Section: Discussionmentioning

confidence: 94%

“…A value for the diffusion coefficient A, have to be provided on the base of experiences of other studies: in Long Island New York, USA (Carter 1981;Wong 1993), in New Bedford Harbor, Massachusetts, USA (Abdelrhman 2002), in Rhone River, France (Periañez 2005) and in Topolobampo lagoon, México (Montaño-Ley et al 2007). In this investigation the diffusion coefficient (8 m 2 s −1 ) has been taken as equal in the x and y direction.…”

Section: The Numerical Modelmentioning

confidence: 99%

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Tidal Hydrodynamics and their Implications for the Dispersion of Effluents in Mazatlán Harbor: An Urbanized Shallow Coastal Lagoon

Montaño-Ley

Peraza-Vizcarra²,

Páez‐Osuna

2008

Water Air Soil Pollut

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In order to investigate the Urias Coastal Lagoon (UCL) hydrodynamics, a vertically integrated semi-implicit, non-linear, finite difference model, has been applied. The flow dynamics in this model has been described by the depth integrated shallow water equations and has been forced by prescribed free surface elevations at the open boundary in the inlet of the lagoon. The predicted instantaneous tidal elevation and the vector field of tidal velocities, reflect reasonably well the flood and ebb conditions in the coastal lagoon. Maximum tidal velocities of 0.6 m/s at the navigation channel of the lagoon and tidal ranges of 1.2 m were predicted for spring tides. Residual current of 0.01-0.06 m/s have also been predicted. The advection-diffusion process of a hypothetical pollutant released at two discrete points in the UCL depended on the intensity of water circulation; sites with slow instantaneous tidal velocities and residual currents of small magnitude presented slow advection and diffusion of the pollutant and may be considered vulnerable to the contamination, specifically the head of the lagoon where the pollutant was difficult to be removed by the tidal currents. The main channel, where the tidal currents exceed 0.6 m/s and the residual currents reached 0.06 m/s, behaved as a natural conduct for the pollutant motion. The forces involved in water circulation within the channel would be the best driving mechanism to flush contaminants from the UCL into the Ocean.

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Section: Discussionmentioning

confidence: 94%

Section: The Numerical Modelmentioning

confidence: 99%

Tidal Hydrodynamics and their Implications for the Dispersion of Effluents in Mazatlán Harbor: An Urbanized Shallow Coastal Lagoon

Montaño-Ley

Peraza-Vizcarra²,

Páez‐Osuna

2008

Water Air Soil Pollut

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“…In this sense, water renewal in harbours has been studied under different approaches and methodologies, in order to mitigate water quality degradation. For example, Abdelrhman (2002) investigated changes in water renewal behaviour in a harbour, due to the construction of a protection barrier. Grifoll et al (2010) elucidated the spatial variability of water renewal, in a micro-tidal harbour.…”

Section: Introductionmentioning

confidence: 99%

Water renewal and risk assessment of water pollution in semi-enclosed domains: Application to Bilbao Harbour (Bay of Biscay)

Grifoll

Campo

Espino

et al. 2013

Journal of Marine Systems

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“…Calculated by the numerical model as the average volume over a few tidal cycles c Presented in previous studies as LRT (e.g.,Abdelrhman 2005Abdelrhman , 2002 d Measured during sediment profile imaging in 2001 and 2003 e Station locations may shift between surveys in 2000, 2001, and 2003. Systems with stations in italics are amenable to…”

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confidence: 99%

Relationships between Nutrient Enrichment and Benthic Function: Local Effects and Spatial Patterns

Abdelrhman

Cicchetti

2011

Estuaries and Coasts

Self Cite

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Eutrophication-induced changes to benthic faunal activities are problems of significant ecological impact, affecting global nutrient budgets as well as local trophic connections. We address the question of how nitrogen loads to estuarine embayments alter the bioturbation activities of benthic fauna. Specifically, we related local benthic activities to calculated local nitrogen concentrations for 22 northeastern US estuaries. These local nitrogen concentrations were derived from the calculated nitrogen loading for the embayment together with the spatial distribution of the local flushing time. Our results showed a maximum bioturbation rate at intermediate nitrogen concentrations or a "hump-shaped" pattern of response. This behavior was evident in all embayments that had a range of concentrations including low, intermediate, and high values. Embayments where sampling did not include this full range did not show this behavior. This work provides methods and guidance to help managers make decisions concerning the effects of nitrogen loading on the activities and wellbeing of benthic fauna in coastal embayments. The novelty of this approach lies in identifying the response of bioturbation to nitrogen loading in many systems, without costly and time-consuming speciation of benthic fauna, and also in rapidly identifying embayments and aquatic areas with vulnerable fauna. These results are ecologically significant in supporting the hypothesis that benthic organism abundance and activity will peak at mid-levels of nitrogen due to the interplay of food availability and oxygen levels, noting that the critical levels of these factors differ among water bodies.

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Modeling how a hurricane barrier in New Bedford Harbor, Massachusetts, affects the hydrodynamics and residence times

Cited by 32 publications

References 6 publications

Tidal Hydrodynamics and their Implications for the Dispersion of Effluents in Mazatlán Harbor: An Urbanized Shallow Coastal Lagoon

Tidal Hydrodynamics and their Implications for the Dispersion of Effluents in Mazatlán Harbor: An Urbanized Shallow Coastal Lagoon

Water renewal and risk assessment of water pollution in semi-enclosed domains: Application to Bilbao Harbour (Bay of Biscay)

Relationships between Nutrient Enrichment and Benthic Function: Local Effects and Spatial Patterns

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