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JMSE
Special Issues
Hydrodynamics and Mixing Processes in Estuaries and Lagoons
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Hydrodynamics and Mixing Processes in Estuaries and Lagoons

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Coastal Engineering".

Deadline for manuscript submissions: closed (10 August 2022) | Viewed by 4487

Special Issue Editor

Dr. Ana Picado

E-Mail Website
Guest Editor
Physics Department, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
Interests: numerical modelling of coastal systems; physical/biological/chemical interactions; remote sensing; estuaries and lagoons; coastal zone monitoring; atmosphere–ocean processes; water quality
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Estuaries and lagoons represent some of the most dynamic interfaces on Earth, at the boundary between land and open sea, and support some of the most diverse and productive habitats. Their circulation is mainly determined by the fluvial inflow and the introduction of seawater through tidal currents and turbulent mixing. The nature of the mixing depends on the system’s morphological characteristics, the magnitude of freshwater discharge, and tidal forcing. Therefore, the understanding of coastal system circulation and salinity patterns is a necessary step towards the development of sound management practices.

This Special Issue seeks to gather a series of publications that highlight recent findings and contribute to improving the knowledge on hydrodynamics and mixing processes in estuaries and lagoons, either through numerical modeling, in situ measurements, or both. Research articles, review articles, and case studies are welcome.

Contributions should focus on estuaries and lagoon circulation, transport and mixing, hydrodynamic and hydrographic characteristics (tidal propagation, tidal currents, tidal asymmetries, water salinity, water temperature), salt intrusion and freshwater inflow, mixing processes, stratification, transport timescales (residence time, freshwater fraction).

Dr. Ana Picado
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • estuaries and lagoons
  • tidal processes
  • tidal propagation
  • salinity and circulation patterns
  • transport and mixing processes

Published Papers (2 papers)

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Research

20 pages, 5479 KiB  
Article
Circulation and Transport Processes during an Extreme Freshwater Discharge Event at the Tagus Estuary
by Ana Filipa Ribeiro, Magda Sousa, Ana Picado, Américo Soares Ribeiro, João Miguel Dias and Nuno Vaz
J. Mar. Sci. Eng. 2022, 10(10), 1410; https://doi.org/10.3390/jmse10101410 - 2 Oct 2022
Cited by 2 | Viewed by 1548
Abstract
During the winter of 2013, the Tagus estuary was under the influence of intense winds and extreme freshwater discharge that changed its hydrodynamics and, consequently, the salt and heat transport. Moreover, the dynamics of the estuary may change due to climate change which [...] Read more.
During the winter of 2013, the Tagus estuary was under the influence of intense winds and extreme freshwater discharge that changed its hydrodynamics and, consequently, the salt and heat transport. Moreover, the dynamics of the estuary may change due to climate change which will increase the frequency of heat waves and increase the mean sea level. Therefore, it is of utmost importance to study the impact of the future increase in air temperature and mean sea level under extreme events, such as that in the winter of 2013, to ascertain the foreseen changes in water properties transport within the estuary and near coastal zone. Several scenarios were developed and explored, using the Delft3D model suite, considering the results of the CMIP6 report as forcing conditions. Before the event, the mixing region of the estuary presented well-mixed conditions and its marine area a slight stratification. During the event, the estuary was filled with freshwater and the mixing region migrated toward the coast, leading to lower water temperature values inside the estuary. SLR has a higher impact on the salinity and stratification patterns than the air temperature increase. The response of water temperature is directly related to the increase in air temperature. The estuary mouth and the shallow regions will be more prone to changes than the upstream region of the estuary. The projected changes are directly linked to the future CO2 emissions scenarios, being intensive with the highest emission scenario. Full article
(This article belongs to the Special Issue Hydrodynamics and Mixing Processes in Estuaries and Lagoons)
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22 pages, 5467 KiB  
Article
Dynamics of Water, Salt, and Nutrients Exchange at the Inlets of Three Coastal Lagoons
by Maria Zoidou, Nikolaos Kokkos and Georgios Sylaios
J. Mar. Sci. Eng. 2022, 10(2), 205; https://doi.org/10.3390/jmse10020205 - 2 Feb 2022
Cited by 2 | Viewed by 1602
Abstract
The intertidal patterns at the inlet of three coastal lagoons (Agiasma, Porto Lagos, and Xirolimni) in Northern Greece were investigated by combining in situ samplings and computational efforts. These lagoons are Mediterranean, microtidal coastal systems, connected with the adjacent open sea (Thracian Sea) [...] Read more.
The intertidal patterns at the inlet of three coastal lagoons (Agiasma, Porto Lagos, and Xirolimni) in Northern Greece were investigated by combining in situ samplings and computational efforts. These lagoons are Mediterranean, microtidal coastal systems, connected with the adjacent open sea (Thracian Sea) through their inlet canals and are highly affected by the lagoon–sea exchange processes. Limited freshwater enters their basins, mostly due to precipitation and agricultural drainage. An intense monitoring program of water flow and quality at the mouth of the three lagoons was carried out, aiming to quantify the transport mechanisms of water, salt, and nutrients across the inlet canal under different tidal/meteorological conditions. Ebb currents were recorded higher than flood currents, and the temporal variability of the longitudinal velocity was characterized by asymmetries. Residual currents were important to the water exchange, with the Eulerian water, salt, and nutrient fluxes being an order of magnitude larger than the Stokes drift. Eulerian transport and tidal pumping are considered as important mechanisms for salt and nutrients exchange through the inlets. The return flow factor varied from 1 to 17.5% of the water exiting the lagoons in ebb, while the residence time ranged from 0.7 days to 4.2 days. Full article
(This article belongs to the Special Issue Hydrodynamics and Mixing Processes in Estuaries and Lagoons)
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