Tidal hydrodynamics in a two-inlet coastal lagoon in the Gulf of California

Serrano, David; Ramírez-Félix, Evlin; Valle‐Levinson, Arnoldo

doi:10.1016/j.csr.2013.04.038

Cited by 22 publications

(12 citation statements)

References 33 publications

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“…In this vein, the wellknown categorisation of Kjerfve (1986) has helped to forge a better understanding of the different types of lagoons and how these respond over different time scales to different hydrological and geomorphological processes. Second, of interest to many researchers are the fundamental processes connected with the hydrodynamics and related water quality within the lagoon (Jewell et al, 2012;Dussaillant et al, 2009;Serrano et al, 2013). In deeper lagoons vertical density stratification can also be a consideration in the trapping or release of chemical species in deeper waters (Albarakati & Ahmad, 2012).…”

Section: Introductionmentioning

confidence: 99%

Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Mitchell¹,

Couceiro²,

Boateng³

2017

Ocean & Coastal Management

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The challenges associated with managing systems of shallow coastal lagoons along a rapidly evolving coastline are illustrated in a case study of small lagoon systems in Ghana where these important structures are relied on by a range of different stakeholders for a variety of different purposes including fishing, tourism and salt production. Results of some water quality measurements are presented, showing that these lagoons have poor ecological status where they experience either a lack of flushing by the tide, or large amounts of anthropogenic inputs, or both. A vulnerability assessment is applied to the lagoons in question and this reveals a varying degree of threat from climate change to the operation and use of the lagoons. Our understanding of these systems suggests that a set of 1D hydrodynamic models, underpinned by an understanding of the local coastal sediment transport in each case, is appropriate, and could then be used to inform stakeholders and management in decision making. Integrated, broad-ranging management strategies must adapt to the realities of climate change in order to allow the sustainable use of these lagoons in providing economic benefits, ecosystem services, and elements of coastline protection for the benefit of the local and regional population and its economy.

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Section: Introductionmentioning

confidence: 99%

Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Mitchell¹,

Couceiro²,

Boateng³

2017

Ocean & Coastal Management

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“…Examples of such embayments are the Western Wadden Sea in the Netherlands, with the Marsdiep and Vlie inlets (e.g. Ridderinkhof 1988, also considered here), the Laguna de Términos in México (David and Kjerfve 1998) and the Santa María La Reforma in California (Serrano et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of tidal characteristics in double inlet systems to momentum dissipation on tidal flats: a perturbation analysis

et al. 2018

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In a tidal channel with adjacent tidal flats, along-channel momentum is dissipated on the flats during rising tides. This leads to a sink of along-channel momentum. Using a perturbative method, it is shown that the momentum sink slightly reduces the M 2 amplitude of both the sea surface elevation and current velocity and favours flood dominant tides. These changes in tidal characteristics (phase and amplitude of sea surface elevations and currents) are noticeable if widths of tidal flats are at least of the same order as the channel width, and amplitudes and gradients of along-channel velocity are large. The M 2 amplitudes are reduced because stagnant water flows from the flats into the channel, thereby slowing down the current. The M 4 amplitudes and phases change because the momentum sink acts as an advective term during the fall of the tide, such a term generates flood dominant currents. For a prototype embayment that resembles the Marsdiep-Vlie double-inlet system of the Western Wadden Sea, it is found that for both the sea surface elevation and current velocity, including the momentum sink, lead to a decrease of approximately 2% in M 2 amplitudes and an increase of approximately 25% in M 4 amplitudes. As a result, the net import of coarse sediment is increased by approximately 35%, while the transport of fine sediment is hardly influenced by the momentum sink. For the Marsdiep-Vlie system, the M 2 sea surface amplitude obtained from the idealised model is similar to that computed with a realistic three-dimensional numerical model whilst the comparison with regard to M 4 improves if momentum sink is accounted for.

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“…They noted that fine sediments (silt and clay) typically accumulate in areas with low hydrodynamic energy, whereas sandy sediments typically accumulate in high-hydrodynamic environments. Serrano et al (2013) observed that the SAMARE coastal lagoon system has two high hydrodynamic energy zones, one in the north (Perihuete mouth) and one more in the south (Yameto mouth). The SAMARE coastal lagoon also has a low-energy zone (dominated by friction) in the central region of the system, which is mainly influenced by shallow waters.…”

Section: Resultsmentioning

confidence: 97%

Strong Acid Mixture and Sequential Geochemical Arsenic Extractions in Surface Sediments from the Santa Maria La Reforma Coastal Lagoon, Mexico: A Bioavailability Assessment

Rivera-Hernández

Green-Ruíz

2016

Arch Environ Contam Toxicol

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Thirty-three sediment samples were collected from the Santa Maria La Reforma coastal lagoon and digested by way of a strong acid mixture and sequential arsenic (As)-extraction method to determine the arsenic (As) content and bioavailability. The As content was determined by atomic fluorescence spectrometry. In addition, grain-size analyses were performed, and organic carbon, carbonate, and iron (Fe) and manganese (Mn) concentrations were determined. Fe and Mn determination was performed by atomic absorption spectroscopy. A Pearson correlation matrix and As enrichment factors were calculated. Sediment concentrations from Santa Maria La Reforma ranged from 3.6 to 25 µg As g(-1) with an average of 13.4 ± 7.6 µg As g(-1). The highest values were observed in the northern (Playa Colorada), north-central (Mocorito River discharge zone), and southern zones ("El Tule" agricultural drain). Most samples were classified as exhibiting no or minor As enrichment and were lower than the threshold effect level (TEL; 7.24 µg g(-1)) for biota (MacDonald et al. in Ecotoxicology 5:253-278, 1996). Low bioavailable As values (<3 %) were measured in the majority of the sediment. The highest As percentages were associated with the oxyhydroxide fraction (F5). The results indicate that As bioavailability is negligible.

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Tidal hydrodynamics in a two-inlet coastal lagoon in the Gulf of California

Cited by 22 publications

References 33 publications

Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Influence of flushing and other characteristics of coastal lagoons using data from Ghana

Sensitivity of tidal characteristics in double inlet systems to momentum dissipation on tidal flats: a perturbation analysis

Strong Acid Mixture and Sequential Geochemical Arsenic Extractions in Surface Sediments from the Santa Maria La Reforma Coastal Lagoon, Mexico: A Bioavailability Assessment

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