Geophysical and hydrogeological investigation for the saline water invasion in the coastal aquifers of West Bengal, India: a critical insight in the coastal saline clay–sand sediment system

Kumar, Prashant; Tiwari, Prarabdh; Biswas, Arkoprovo; Acharya, Tapas

doi:10.1007/s10661-020-08520-x

Cited by 23 publications

(4 citation statements)

References 47 publications

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“…Vertical electrical sounding and imaging have been also extensively used to study the salt water intrusion in coastal aquifers of India (e.g., [16,29,43]).…”

Section: Time-lapse Monitoring Of Contamination: Applications and Pro...mentioning

confidence: 99%

Tracking contaminant transport using time-lapse geophysics: A review on applications of electrical methods

Rani

Cassiani

2022

Water Security

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“…Vertical electrical sounding and imaging have been also extensively used to study the salt water intrusion in coastal aquifers of India (e.g., [16,29,43]).…”

Section: Time-lapse Monitoring Of Contamination: Applications and Pro...mentioning

confidence: 99%

Tracking contaminant transport using time-lapse geophysics: A review on applications of electrical methods

Rani

Cassiani

2022

Water Security

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“…pH value for this study ranges from 6.2 to 7.5 with the lowest concentration of pH at sample location GT-6 with a value of 6.2.While the highest pH value was observed at sample location GT-10 with value of 7.5 as shown in Figure 9. High concentration of pH in groundwater could be attributed to aquifer configuration and other geological or anthropogenic factors [51] . pH values obtained from the study revealed that groundwater ranges from acidic to basic.…”

Section: Comparison Of Groundwater Quality To Who (2010) Set Limit Standardmentioning

confidence: 99%

Integrated Geophysical and Hydrogeochemical Characterization and Assessment of Groundwater Studies in Adum West Area of Benue State,Nigeria

2021

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Integration of geophysical and hydrogeochemical methods has been scientifically proven to be useful in vulnerability study and groundwater characterization. Subsurface geoelectric parameters such as resistivity and thickness obtained from geophysical method (Vertical Electrical Sounding VES) was used to determine aquifers vulnerability, longitudinal resistance (ρL) and transverse unit resistance (Rt). Thirty four water samples were collected from groundwater sources for physicochemical analysis.Estimated results from longitudinal conductance (S), (Rt) and (ρL) showed that the values ranges from 0.03 to 2.5mhos, 103.64 to 1964417.8 Ω/m2 and 215.41 to 65731.68 Ω-m respectively. Result from S suggested that 50 % of groundwater is considered to be vulnerable to contamination from the earth surface, while the remaining 50 % is considered to be slightly vulnerable to surface contamination. Further findings obtained from hydrogeochemical analysis such as Gibb’s and Chadba plots revealed that groundwater is highly influenced by rock water interaction,groundwater is classified to be Na+ + HCO3¯, Ca2+ + Mg2++ HCO3¯ , Na+ + Cl¯ and Ca2+ + Mg2+ + Cl¯ water type. Deduction from Soltan classification suggested that groundwater is classified to be of Na+ ˗ HCO3¯ and Na+ ˗ SO4 2¯ water type. Results obtained from Ec and pH suggested that the values were below WHO permissible limit, while result obtained from TDS showed that at some sampling points TDS values were above WHO limit. Based on pH value obtained groundwater within the study area fell within slightly basic to acidic.

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“…These regions are planned Bshlanding points, aquaculture spots, commercial centres, and common visitor spots that have engrossed a significant incursion of peoples from India and abroad. Hence, there is a massive demand for fresh water in these areas and the area faces freshwater scarcity due to the saltwater intrusion problem (Kumar et al 2020).…”

Section: Study Areamentioning

confidence: 99%

“…However, due to lack of multidisciplinary approaches integrating different types of observational, simulated, or numerical data, the spatial distribution of saline water intrusions is not constrained eDciently (Werner et al 2013). The estimation of saline water intrusion in coastal regions has been approached by few authors employing geochemical and geophysical methods (e.g., Hughes et al 2009;Pauw et al 2012;Kumar et al 2020). Other methods include airborne electromagnetic data (e.g., Faneca S anchez et al 2012;Jørgensen et al 2012;Sulzbacher et al 2012), borehole data (e.g., Siemon et al 2009, and numerical modelling (Meyer et al 2018a, b).…”

Section: Introductionmentioning

confidence: 99%

Magnetic susceptibility investigation of the saline water intrusion problem: The LAMP-BHU protocol

et al. 2021

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A protocol is presented to perform bulk magnetic susceptibility (BMS) analysis of simulated seawater/ saline water using MFK2-FA Multi-Function Kappabridge instrument at Laboratory for Analyses of Magnetic and Petrofabric (LAMP), BHU to obtain a correlation between BMS and hydrogeological data such as salinity and conductivity. This LAMP-BHU Protocol involves the preparation of simulated saline water. It has been developed after BMS measurement of 20 simulated seawater samples in different frequencies, i.e., F1 (976 Hz), F2 (3904 Hz), and F3 (15616 Hz) to prepare a standard data. This standard data is further validated with Beld data. Fourteen water samples are collected from the Beld, and hydrogeological data (salinity and conductivity) and BMS at three different frequencies were measured. Further linear regression analysis is performed on the measured data. This protocol yields eDcient results with F3, followed by F1 and F2 having an R 2 value of 0.84, 0.60, and 0.54, respectively, for salinity, and 0.79, 0.51, and 0.40, respectively, for conductivity. Salinity and conductivity are showing a negative trend with all the frequencies. This protocol enables to delineate saline water intruded zone or extent of saline intrusion using BMS analysis. The proposed protocol is a rapid and eDcient mode of determination of the saline water intruded zones in the coastal aquifers for prioritisation of groundwater assets facilitating freshwater availability in coastal areas.

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Geophysical and hydrogeological investigation for the saline water invasion in the coastal aquifers of West Bengal, India: a critical insight in the coastal saline clay–sand sediment system

Cited by 23 publications

References 47 publications

Tracking contaminant transport using time-lapse geophysics: A review on applications of electrical methods

Tracking contaminant transport using time-lapse geophysics: A review on applications of electrical methods

Integrated Geophysical and Hydrogeochemical Characterization and Assessment of Groundwater Studies in Adum West Area of Benue State,Nigeria

Magnetic susceptibility investigation of the saline water intrusion problem: The LAMP-BHU protocol

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