A study on the impact of anthropogenic and geogenic factors on groundwater salinization and seawater intrusion in Gaza coastal aquifer, Palestine: An integrated multi-techniques approach

Naeem, Madhat Farouk Abu Al; Yusoff, Ismail; Ng, Tham Fatt; Maity, Jyoti Prakash; Alias, Yatimah; May, Raksmey; Alborsh, Hussam

doi:10.1016/j.jafrearsci.2019.05.006

Cited by 36 publications

(17 citation statements)

References 77 publications

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“…The FP-1 factor explains 33% of the total variance and presents a positive correlation between EC, TDS, Cl − , Na + , and K + . Figure 9 a shows its spatial distribution parallel to the sea line, the location of high charges on these variables represents the main ions in seawater, which would reflect the influence of marine intrusion on groundwater [ 2 , 49 ]. The FP-2 factor explains 32% of the total variance presents a positive correlation between Ca 2+ , Mg 2+ , SO 4 2− and negative pH.…”

Section: Resultsmentioning

confidence: 99%

“…The high charge of NO 3 − in this factor, evidence nitrification product of microbial oxidation of NH 4 + in the study area due to wastewater input. This flow leads to acidity [ 49 ], decreasing the pH, causing dissolution of carbonate minerals, and enriching the water with HCO 3 − . However, another source of bicarbonate would come from the oxidation process of decaying organic matter and the respiration of roots [ 54 ].…”

Section: Resultsmentioning

confidence: 99%

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Hydrogeochemical Characterization and Identification of Factors Influencing Groundwater Quality in Coastal Aquifers, Case: La Yarada, Tacna, Peru

Chucuya

Vera

Pino-Vargas

et al. 2022

IJERPH

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The coastal aquifer La Yarada has anthropogenic and geogenic contamination that adversely affect the quality of groundwater for population and agricultural use. In this scenario, multivariate statistical methods were applied in 20 physicochemical and isotopic parameters of 53 groundwater pumping wells in October 2020, with the aim of characterizing the hydrogeochemical processes that dominate the groundwater of the coastal aquifer and the factors that cause them to optimize the effective management of water resources, delimiting areas affected by more than one salinization process. The samples were grouped into three clusters (C1, C2, and C3) with cluster analysis, the spatial distribution of C2 and C3 (reclassified in stiff diagrams), evidenced hydrogeochemical facies associated with the flow and recharge directions governed by the structural lineaments (NE-SO), favoring some areas more than others, arising different facies and hydrogeochemical processes. Factor analysis was applied from three different approaches: (1) main elements, (2) trace elements, and (3) physicochemical and isotopic parameters; exposing 6 distinguishable hydrogeochemical processes in the aquifer and factors that cause them: (i) salinization—marine intrusion, (ii) fertilizer leaching and dissolution of (Ca2+, Mg2+), (iii) wastewater mixture (NO3−), (iv) reducing conditions (Fe, Mn, Al), (v) contributions of (B, Sr), (vi) conservative mixtures and dissolution (As, F). It was validated with water quality indices (WQI) according to the national limits, delimiting 67 km2 parallel to the coast with “bad” to “very bad” quality for human consumption and unsuitable for irrigation according to the Wilcox diagram thus pre-treatment in this area is indispensable.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hydrogeochemical Characterization and Identification of Factors Influencing Groundwater Quality in Coastal Aquifers, Case: La Yarada, Tacna, Peru

Chucuya

Vera

Pino-Vargas

et al. 2022

IJERPH

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“…Again, only two papers recognized the geothermal sources as the main salinization mechanism in coastal aquifers [203,204]. Finally, some studies encompass the recognition of multiple sources of salinity such as geothermal fluids, actual and paleo-seawaters, evaporitic rocks dissolution, and anthropogenic sources [205][206][207][208][209][210]. It is worth remembering here that these latter processes are much more relevant in inland areas.…”

Section: Groundwater Salinization Origins and Mechanismsmentioning

confidence: 99%

The Issue of Groundwater Salinization in Coastal Areas of the Mediterranean Region: A Review

Mastrocicco

Colombani

2021

Water

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The Mediterranean area is undergoing intensive demographic, social, cultural, economic, and environmental changes. This generates multiple environmental pressures such as increased demand for water resources, generation of pollution related to wastewater discharge, and land consumption. In the Mediterranean area, recent climate change studies forecast large impacts on the hydrologic cycle. Thus, in the next years, surface and ground-water resources will be gradually more stressed, especially in coastal areas. In this review paper, the historical and geographical distribution of peer-review studies and the main mechanisms that promote aquifer salinization in the Mediterranean area are critically discussed, providing the state of the art on topics such as actual saltwater wedge characterization, paleo-salinities in coastal areas, water-rock interactions, geophysical techniques aimed at delineating the areal and vertical extent of saltwater intrusion, management of groundwater overexploitation using numerical models and GIS mapping techniques for aquifer vulnerability to salinization. Each of the above-mentioned approaches has potential advantages and drawbacks; thus, the best tactic to tackle coastal aquifer management is to employ a combination of approaches. Finally, the number of studies focusing on predictions of climate change effects on coastal aquifers are growing but are still very limited and surely need further research.

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“…However, the identification of pollution sources is not an easy task because of the presence of: (1) more than one source, (2) point and diffuse sources and (3) several biogeochemical processes which can alter contaminant concentration [25]. The management of water resources in a coastal area requires an accurate characterization of aquifers' recharge, groundwater pathways and identification of groundwater contamination sources which can be effectively carried out by an integrated hydrogeological, hydrostratigraphical, hydrochemical and isotopic assessment [26][27][28][29]. In many cases, the use of stable isotopes of elements allows the identification of sources characterized by different isotopic compositions [14,[30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Natural and Anthropogenic Groundwater Contamination in a Coastal Volcanic-Sedimentary Aquifer: The Case of the Archaeological Site of Cumae (Phlegraean Fields, Southern Italy)

Stellato

Coda

Arienzo

et al. 2020

Water

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Archeological sites close to coastal volcanic-sedimentary aquifers are threatened by groundwater contaminated by natural and anthropogenic processes. The paper reports on a hydrogeological, chemical (major, minor and trace elements) and isotopic (δD-H2O, δ18O-H2O, δ15N-NO3, δ18O-NO3, δ11B, 222Rn) survey of groundwater at the Cumae archaeological site, which is located in the coastal north-western sector of the volcanic district of Phlegraean Fields (southern Italy), where groundwater flooding phenomena occur. Results show the presence of a complex coastal volcanic-sedimentary aquifer system where groundwater quality is influenced mainly by: (i) aquifer lithology and localized ascent of magmatic fluids along buried volcano-tectonic discontinuities, (ii) mixing of groundwater, deep mineralized fluids and seawater during groundwater pumping, and (iii) nitrate contamination >50 mg/L from non-point agricultural sources. Moreover, δD and δ18O point toward fast recharge from seasonal precipitations, while the isotopic ratios of N and O in nitrate reveal the contribution of mineral and organic fertilizers as well as leakage from septic tanks. Results can assist the local archaeological authority for the safeguarding and management of the archaeological heritage of the Cumae site.

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A study on the impact of anthropogenic and geogenic factors on groundwater salinization and seawater intrusion in Gaza coastal aquifer, Palestine: An integrated multi-techniques approach

Cited by 36 publications

References 77 publications

Hydrogeochemical Characterization and Identification of Factors Influencing Groundwater Quality in Coastal Aquifers, Case: La Yarada, Tacna, Peru

Hydrogeochemical Characterization and Identification of Factors Influencing Groundwater Quality in Coastal Aquifers, Case: La Yarada, Tacna, Peru

The Issue of Groundwater Salinization in Coastal Areas of the Mediterranean Region: A Review

Natural and Anthropogenic Groundwater Contamination in a Coastal Volcanic-Sedimentary Aquifer: The Case of the Archaeological Site of Cumae (Phlegraean Fields, Southern Italy)

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