Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.5
3.4
Journals
Water
Special Issues
Hydrogeochemistry in Coastal Aquifers
share announcement

Hydrogeochemistry in Coastal Aquifers

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Oceans and Coastal Zones".

Deadline for manuscript submissions: closed (10 November 2021) | Viewed by 10322

Special Issue Editor

Dr. Linda Luquot

E-Mail Website
Guest Editor
Department of Geosciences, Université Montpellier, CNRS, 34095 Montpellier, France
Interests: reactive transport processes; porous medium; laboratory experiments; fate of contaminents; X-ray microtomography images

Special Issue Information

Coastal zones concentrate human activities, and, thus, water production and water needs are increasing in these areas. Coastal aquifer systems are of particular interest for their large water resource capacities. Nevertheless, the hydrogeochemistry of coastal aquifers is very complex, in part due to local heterogeneity, and flow localization, but also because coastal aquifers are at the interface between two opposite systems characterized by fresh water on one hand and seawater on the other. Coastal aquifers are thus affected by both submarine groundwater discharge, which has a key role in the marine environment, and seawater intrusion, which damages the water quality. The resulting mixing zone at the interface between fresh water and seawater is complex and hard to characterize as are the hydrogeochemistry processes occurring in this dynamic interface.

In this Special Issue, original research papers as well as reviews dedicated to the hydrogeochemistry of coastal aquifers are welcomed. Potential topics include, but are not limited to, the following:

  • Field-scale monitoring;
  • Numerical modeling of the hydrogeochemical processes in coastal aquifers;
  • Laboratory experiments reproducing the mixing zone;
  • Pumping test experiments in coastal aquifers.

Dr. Linda Luquot
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. Water is an international peer-reviewed open access semimonthly 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

  • mixing zone
  • reactive transport processes
  • local heterogeneities
  • numerical modeling of hydrogeochemical processes
  • SGD and SWI quantification
  • density-driven flows

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

15 pages, 3860 KiB  
Article
Seasonal Variability of Nutrients and Radium Isotope Fluxes from Submarine Karstic Spring at the Southwest of Crimea, Black Sea
by Illarion I. Dovhyi, Ol’ga N. Kozlovskaia, Nikolay A. Bezhin, Iuliia G. Shibetskaia, Aleksey I. Chepyzhenko and Ivan G. Tananaev
Water 2022, 14(4), 568; https://doi.org/10.3390/w14040568 - 13 Feb 2022
Viewed by 2087
Abstract
The groundwaters of the southwestern region of Crimea are formed on the karst plateaus of the Crimean Mountains, and a significant amount of them is discharged into the Black Sea. The Crimean Peninsula is a water-deficient region; therefore, the study of its hydrogeology [...] Read more.
The groundwaters of the southwestern region of Crimea are formed on the karst plateaus of the Crimean Mountains, and a significant amount of them is discharged into the Black Sea. The Crimean Peninsula is a water-deficient region; therefore, the study of its hydrogeology is an urgent task, since groundwater is a valuable freshwater resource. Through submarine groundwater discharge (SGD), the transfer of chemical compounds to the sea in the event of anthropogenic interference may also occur. In this work the fluxes of submarine groundwaters in the area of Cape Peleketo in different seasons, and also the fluxes of nutrients within them, are evaluated for the first time, as well as the factors determining their variability. During the study, hydrological (temperature, salinity (S), current velocity) and hydrochemical (concentration of biogenic elements) parameters, as well as the concentration of long-lived isotopes of 226Ra and 228Ra, were measured. The SGD fluxes were estimated through the mixing formula. As the endmember, we used groundwater concentrations of nutrients or radiotracers, defined by extrapolation of nutrients or radium concentrations to zero salinity. Significant differences in the studied region’s SGD flux values (from 4100 to 13,900 m3/day) are shown; maximum values are in winter and summer, and minimum values are in autumn and spring. The relationship between the seasonal variability of the discharge intensity and the amount of precipitation in the groundwater formation area is shown. The data obtained show that this source makes a significant contribution to the local supply of nutrients. Substantial amounts of nitrates come from the karst cavity, which can lead to eutrophication and limit the primary production of phosphorus in the local coastal sea region. Full article
(This article belongs to the Special Issue Hydrogeochemistry in Coastal Aquifers)
►▼ Show Figures

Figure 1

24 pages, 6885 KiB  
Article
Spatial and Temporal Changes of Groundwater Storage in the Quaternary Aquifer, UAE
by Mohsen Sherif, Ahmed Sefelnasr, Abdel Azim Ebraheem, Mohamed Al Mulla, Mohamed Alzaabi and Khaled Alghafli
Water 2021, 13(6), 864; https://doi.org/10.3390/w13060864 - 22 Mar 2021
Cited by 13 | Viewed by 7488
Abstract
To study the temporal and spatial variations of the groundwater quantity and quality in response to intensive groundwater exploitation from the Quaternary aquifer in UAE, a water budget model with a cell size of one km2 was developed. The available historical records [...] Read more.
To study the temporal and spatial variations of the groundwater quantity and quality in response to intensive groundwater exploitation from the Quaternary aquifer in UAE, a water budget model with a cell size of one km2 was developed. The available historical records of groundwater levels and salinity have been used to develop the water table and salinity maps of UAE for the years 1969, 2005, 2010, and 2015. The available water resources and soil information system was used to facilitate validity, cogency, and consistency of the groundwater analysis. The spatial analysis module of GIS was used to define the aquifer setting, saturated thickness, aquifer base elevation, effective porosity, and groundwater salinity at each grid cell. The obtained results indicated that the volume of fresh groundwater resources in the Quaternary aquifer in UAE has decreased from 238 km3 in 1969 to around 10 km3 in 2015. A major part of these depleted fresh groundwater resources was replaced by brackish water, and, therefore, the total groundwater storage in this aquifer has only decreased from 977 in 1969 to 922 km3 in 2015, respectively. If the same groundwater exploitation continues, the freshwater storage in the surficial aquifer might be totally depleted in agricultural areas. Most probably, the brackish groundwater resources will be exploited. In such areas, more attention should be devoted to the management of brackish water resources to avoid the exacerbation of the saltwater intrusion problem. Despite the fact that the obtained results indicate the negative impacts of the improper water resources management in a small part of the arid area, the learned lessons are valid for other arid countries, in particular, using the proper steady state boundary conditions for the initial conditions in modeling the available future management alternatives. Full article
(This article belongs to the Special Issue Hydrogeochemistry in Coastal Aquifers)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop