scholarly journals Groundwater Monitoring Systems to Understand Sea Water Intrusion Dynamics in the Mediterranean: The Neretva Valley and the Southern Venice Coastal Aquifers Case Studies

Water ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 561
Author(s):  
Ivan Lovrinović ◽  
Alessandro Bergamasco ◽  
Veljko Srzić ◽  
Chiara Cavallina ◽  
Danko Holjević ◽  
...  
Keyword(s):  
Real Time ◽  
Coastal Aquifers ◽  
Sea Water ◽  
Quantitative Information ◽  
Water Dynamics ◽  
Monitoring Systems ◽  
Driving Mechanism ◽  
Sea Water Intrusion ◽  
Water Intrusion ◽  
Aquifer Systems

Sea water intrusion (SWI) has been widely recognized as a global problem, significantly influencing coastal aquifers, mostly through reduced water quality and agricultural production indicators. In this paper, we present the outcomes of the implementation of two independent real-time monitoring systems, planned and installed to get insights on groundwater dynamics within the adjacent coastal aquifer systems, one located in the Neretva Valley, southeastern Croatia, the other located south of the Venice lagoon, northeastern Italy. Both systems are presented with technical details and the capacity to observe, store, and transmit (Neretva site) observed values in real-time. Analysis of time series reveals the significant influence of the sea level oscillations onto the observed groundwater electrical conductivity (EC) and piezometric head values, while precipitation rate is detected as a driving mechanism for groundwater parameters in shallow geological units. The installed monitoring systems are shown to be of great importance to provide qualitative and quantitative information on the processes influencing groundwater and surface water dynamics within two coastal systems.

scholarly journals Impact of Sea-Level Rise on Sea Water Intrusion in Coastal Aquifers

Ground Water ◽  
2009 ◽  
Vol 47 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Adrian D. Werner ◽  
Craig T. Simmons
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Aquifers ◽  
Sea Water ◽  
Sea Water Intrusion ◽  
Water Intrusion

Conceptualisation of Sea-Water Intrusion in an Island Aquifer System

2020 ◽  
Author(s):  
Manuel Sapiano ◽  
Leticia Baena-Ruiz ◽  
Henry Debattista ◽  
David Pulido-Velazquez
Keyword(s):  
Sea Water ◽  
Numerical Models ◽  
Data Availability ◽  
Mitigation Measures ◽  
Sea Water Intrusion ◽  
Aquifer System ◽  
Water Intrusion ◽  
Aquifer Systems ◽  
The Impact ◽  
Analytical Approaches

<p>A method to conceptualise the assessment of the impact of sea-water intrusion in island and coastal aquifer systems is being proposed.  The method will enable the undertaking of a first assessment of the sea-water intrusion problem, hence providing an early-stage and simple to apply “warning system” enabling the informed and timely application of mitigation measures intended to protect the quantitative and qualitative status of the aquifer system. The method proposes the discretization of the aquifer to enable the correlation of the current aquifer “freshwater domain” with reference conditions representing the aquifer system under undisturbed conditions.  The “freshwater domain” is defined by the volume of water between the piezometric surface and the seawater interface, and can be obtained from numerical models, where available, or the application of simple analytical approaches such as the Ghyben-Herzberg solution. . The dynamic of the seawater intrusion is defined as the change in natural “freshwater domain” and chloride concentrations within it. Therefore, the method is applicable to island and coastal aquifers with low-data availability, and in particular to cases where a numerical-model is not-yet developed. The application of the method will enable the quantification of sea-water intrusion impacts at an aquifer scale, enabling the visual-conceptual representation of the sea-water intrusion affected area, as well as identify the level of intrusion.  The method also enables the temporal assessment of sea-water intrusion, identifying the evolution of intrusion throughout the exploitation period of the aquifer system.  The method has been implemented in a GIS tool, and applied to the Mean Sea Level Aquifer system in Malta.</p><p> </p><p>Aknowledgement: This research has been partially supported by the GeoE.171.008-TACTIC project from GeoERA organization funded by European Union’s Horizon 2020 research and innovation program and by the SIGLO-AN project (RTI2018-101397-B-I00) from the Spanish Ministry of Science, Innovation and Universities (Programa Estatal de I+D+I orientada a los Retos de la Sociedad)</p><p> </p>

scholarly journals Salinity problems in Mediterranean and island coastal aquifers in Spain

2018 ◽  
Vol 54 ◽  
pp. 00005
Author(s):  
Emilio Custodio
Keyword(s):  
Canary Islands ◽  
Coastal Aquifers ◽  
Sea Water ◽  
Mediterranean Coast ◽  
Mountainous Areas ◽  
Sea Water Intrusion ◽  
Water Intrusion ◽  
Littoral Sediments ◽  
Carbonate Formations

The Spanish coastal aquifers are often complex and bounded by or inside mountainous areas. Most of them are in Quaternary and Miocene littoral sediments or highly karstified carbonate formations, or in the case of the Canary Islands in volcanic formations. Along the Spanish Mediterranean coast and the Balearic and Canarian archipelagos coasts, 95 groundwater bodies have been identified, often including several aquifers. Some kind of marine salinization problems have been identified in 70 groundwater bodies (20 with generalized problems) but only a few aquifers have detailed, specific studies on sea water intrusion. Information on salinization is often based on scarce and occasional data.

An Application of HFE‐D for Evaluating Sea Water Intrusion in Coastal Aquifers of Southern Vietnam

Ground Water ◽  
2020 ◽  
Vol 58 (6) ◽  
pp. 1012-1022
Author(s):  
Thi Thuy Van Le ◽  
Rungruang Lertsirivorakul ◽  
Tran Vuong Bui ◽  
Marcia K. Schulmeister
Keyword(s):  
Coastal Aquifers ◽  
Sea Water ◽  
Sea Water Intrusion ◽  
Water Intrusion ◽  
Southern Vietnam

scholarly journals Geochemical variations due to salinization in groundwater along the southeast coast of India

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Thilagavathi Rajendiran ◽  
Chidambaram Sabarathinam ◽  
Thivya Chandrasekar ◽  
Banajarani Panda ◽  
Mahalakshmi Mathivanan ◽  
...  
Keyword(s):  
Coastal Aquifers ◽  
Sea Water ◽  
Saline Water ◽  
Exchange Process ◽  
Northeast Monsoon ◽  
Sea Water Intrusion ◽  
Fresh Groundwater ◽  
Study Region ◽  
Water Intrusion ◽  
Study Results

AbstractIn recent years, the extraction of groundwater (GW) in coastal aquifers has rendered the fragile aquifers more saline due to the sea water intrusion. Groundwater from the coastal aquifers of the Pudhucherry region were sampled to study the process of salinization. An integrated approach was adopted to identify the salinization process, by coordinating the results of borehole geophysics, rainfall pattern, water level variation, hydrochemical characters and multivariate statistical analysis. A total of 136 groundwater samples were collected during two different seasons, southwest monsoon (SWM) and northeast monsoon (NEM). The major cations and anions were analyzed adopting standard procedures. Resistivity and litholog indicate that the southeastern (SE) part of the study region has lower resistivity than in north. Based on electrical conductivity (EC) and total dissolved solids (TDS) values, most of the samples are potable, except for few samples from southeastern region. The study results indicated that higher values of Na, EC, K, SO4, Mg and Cl were observed during NEM, indicating leaching of salt into the aquifer and ion exchange process. The predominant hydrochemical facies of groundwater was Na-Cl and Ca–Mg–Cl type reflecting the saline water and the mixing process of saltwater and fresh groundwater, respectively. Though more number of samples with higher EC was noted in NEM, the results of PCA and correlation analysis indicate the predominance of leaching of salts and intense agricultural activities. The process of sea water intrusion was observed to be dominant during SWM.

scholarly journals Evaluation of Sea-Water Intrusion in Coastal Aquifers Using both Numerical Methods and Causal Research: A Case Study of Mombasa, Kenya

Engineering ◽  
2021 ◽  
Vol 13 (07) ◽  
pp. 388-398
Author(s):  
Dorcas Mutheu Musingi ◽  
Michael Mbindyo Munywoki ◽  
Benjamin Musyimi Musingi
Keyword(s):  
Numerical Methods ◽  
Coastal Aquifers ◽  
Sea Water ◽  
Sea Water Intrusion ◽  
Water Intrusion
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