Application of Time-Domain Electromagnetic method in Mapping Sea water intrusion in Al-Batinah Coastal plain, Al Batinah, Sultant of Oman

<p>Temperature depth profiles has been applied on many topics, e.g. climate change, groundwater velocity and saltwater-groundwater interface. In this study, temperature depth profiles are used to identify the origin of groundwater salinization in Pingtung coastal plain, southern Taiwan. Some monitoring wells in the coastal area have reached salty groundwater. Even some of the deeper aquifers, down to 300 m are saltwater. There are two arguments for the origin of those saltwater. One theory is those saltwater were Holocene transgression relics. The other theory is that those saltwater were sea water intrusion due to over-pumping of groundwater. Using the measured temperature depth profiles, a 2D numerical model is developed to simulate the heat transfer of sea water intrusion. The preliminary results show that the cause of salinization is not likely by the modern sea water intrusion. The sea water below a depth of 100 m is a cooler source and the intrusion of sea water should decrease temperature in aquifer. However, the measured temperature data of those salty aquifer are higher.</p>

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Study of Ground water Groundwater Potentiality and Sea Water Intrusion Along along the Coastal Plain, Wadi Thuwal, KSA- A Case Study Based on DC Resistivity

Sultan Qaboos University Journal for Science [SQUJS] ◽

10.24200/squjs.vol15iss0pp31-40 ◽

2010 ◽

Vol 15 ◽

pp. 31

Author(s):

Mansour A. Al-Garni ◽

Hamdy I.E. Hassanein

Keyword(s):

Coastal Plain ◽

Sea Water ◽

Sea Water Intrusion ◽

Resistivity Measurements ◽

Water Intrusion ◽

Number Of Layers ◽

Wide Range ◽

Final Interpretation ◽

Groundwater Potentiality

The present study mainly aims to outline zones that have groundwater potentiality with good quality and those which are affected by sea water intrusion. The electrical resistivity data were acquired over an area of about 170 km2 of a coastal plain, Wadi Thuwal, which is bounded by the Red Sea in the west and the volcanic hills in the east. In such an area, resistivity measurements, using n-layering model, reveal generally reveal a wide range of resistivity values which do not reflect the reality. Hence, the statistical analysis has to be involved to overcome this problem and to make the final interpretation reliable. In our case, the n-layer models were modified to another statistical geoelectric models (SLM), consisting of a number of layers equivalent to the stratigraphic layering beneath each VES site. The modified models were used to outline the depth to the bed rock, groundwater accumulation zones and water table as well as to define the effect of sea water intrusion through the study area. Check alignment above

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AQUIFER CHARACTERIZATION AND EVALUATION OF SEA WATER INTRUSION USING HYDROGEOCHEMICAL ANALYSES FOR MALEKULA, VANUATU

10.1130/abs/2020am-354185 ◽

2020 ◽

Author(s):

Ashley Korin ◽

◽

Shafiul Chowdhury ◽

Donald Hodder

Keyword(s):

Sea Water ◽

Aquifer Characterization ◽

Sea Water Intrusion ◽

Water Intrusion

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

Water ◽

10.3390/w13040561 ◽

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.

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