The tidal hydrodynamics modeling of the Topolobampo coastal lagoon system and the implications for pollutant dispersion

Montaño-Ley, Yovani; Peraza-Vizcarra, R.; Páez‐Osuna, Federico

doi:10.1016/j.envpol.2006.07.007

Cited by 29 publications

(9 citation statements)

References 14 publications

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“…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%

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: 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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“…Sinaloa is located in the southern region of the Gulf of California and is characterized by highly variable oceanographic conditions attributable to the occurrence of intense upwelling events during the winter season and interannual global events, such as the El Niño Southern Oscillation . Locally, the coastal lagoons of Sinaloa present internal circulation patterns strongly influenced by tidal currents that determine the spatial and temporal distributions of pollutants .…”

Section: Introductionmentioning

confidence: 99%

Local and interannual variations in mercury and cadmium in eggs of eight seabird species of the Sinaloa coast, México

Ceyca

Castillo-Guerrero

Garcı́a-Hernández³

et al. 2016

Environmental Toxicology and Chemistry

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Mercury (Hg) and cadmium (Cd) concentrations in eggs of 8 seabird species inhabiting 5 coastal ecosystems in Sinaloa, México were determined during 2 breeding seasons (2012 and 2013): blue-footed booby (Sula nebouxii), brown booby (Sula leucogaster), double-crested cormorant (Phalacrocorax auritus), magnificent frigatebird (Fregata magnificens), brown pelican (Pelecanus occidentalis), royal tern (Thalasseus maximus), laughing gull (Leucophaeus atricilla), and Heermann's gull (Larus heermanni). The interspecific differences found in the concentrations of both metals were attributed to the diet and foraging ecology of the species. The highest Hg concentrations were detected in piscivorous species (brown pelican, 0.42 µg/g; brown booby, 0.31 µg/g; blue-footed booby, 0.26 µg/g; and double-crested cormorant, 0.23 µg/g); whereas species with more varied diets presented the highest Cd concentrations (Heermann's gull, 0.31 µg/g; laughing gull, 0.27 µg/g; and magnificent frigatebird, 0.27 µg/g). Cadmium concentrations were significantly greater in 2013 than 2012 for most species, and brown pelican and laughing gull also had higher Hg concentrations in 2013 in Santa María Bay, suggesting a relationship as a result of the changes either in oceanographic conditions or in continental runoff. Mercury concentrations in brown pelican and Cd concentrations in Heermann's gull and laughing gull were above threshold levels for adverse effects on reproduction and survival. Environ Toxicol Chem 2016;35:2330-2338. © 2016 SETAC.

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“…The energy available for water circulation in coastal lagoons is provided primarily by tidal pumping (Carbajal, Souza & Durazo 1997;Montañ o-Ley et al 2007). In SAMARE coastal lagoon, according to the predictions of the present study, tidal pumping generates tidal velocities up to 0.70 ms À1 at the main channel.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

Ley

Osuna

2012

Aquac Res

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The pollutant dispersion induced by the tidal hydrodynamics was investigated through a modified model in Santa María-La Reforma coastal lagoon, a body water that receives effluents containing chemicals that are used in shrimp aquaculture. Maxima tidal currents (0.7 ms À1 ) were predicted within the main channel. Residual currents, of the order of 0.01 ms À1 , were also predicted. The hypothetical pollutant, released at four selected sites that receive effluents from shrimp aquaculture and agriculture within the lagoon, spread towards the northern and southern inlets. The advection and diffusion processes allow the pollutant in most of the cases, to reach the inlets in about 120 h. The spreading of the pollutant in the coastal lagoon seems to be modulated by the tidal velocity fields. The presence of an area where tidal currents converge in the eastern part of Talchichitle Island suggests that a potential accumulation of pollutants occurs in this site.

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The tidal hydrodynamics modeling of the Topolobampo coastal lagoon system and the implications for pollutant dispersion

Cited by 29 publications

References 14 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

Local and interannual variations in mercury and cadmium in eggs of eight seabird species of the Sinaloa coast, México

Assessment of the tidal currents and pollutants dynamics associated with shrimp aquaculture effluents in SAMARE coastal lagoon (NW Mexico)

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