Regional Simulation of a Groundwater Flow in Coastal Aquifer, Tamil Nadu, India

Elango, L.; Sivakumar, C.

doi:10.1007/978-1-4020-6540-8_18

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…This study, conducted during the dry season characterized by low rainfall, may have contributed to the oversaturation of the minerals mentioned above. This phenomenon aligns with the observations of previous studies (e.g., Garrels andMackenzie 1967, Elango andRamachandran 1991) that saturation indices can vary in response to rainfall conditions. During dry conditions, groundwater often remains supersaturated with calcite and dolomite due to factors like evaporation, leading to the precipitation of these minerals.…”

Section: Saturation Indexsupporting

confidence: 92%

Hydrogeochemical characteristic and water quality index of groundwater and streamwater at Nam Mu River basin, Lai Chau province in northwest Vietnam

Do,

Dung,

Tran

et al. 2024

Environ. Res. Commun.

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Assessing the quality of groundwater and upstream water in regions experiencing water scarcity during the dry season, such as the mountainous districts of Northern Vietnam, holds immense significance in the management, utilization, and preservation of natural water resources. In this study, we collected and analyzed 54 samples of groundwater and upstream stream water within the Nam Mu River basin in Lai Chau province during the dry season. These samples underwent thorough analysis for physicochemical parameters, major ion concentrations, and trace elements. Some results revealed a close relationship between streamwater and groundwater, indicating a similar chemical composition. These waters could be classified based on geological formations, yielding two primary water types in the area. The first type, characterized by Ca2+ - Mg2+ - HCO3- is prevalent in Triassic terrigenous sediments. The second type is a mixed water type, ranging from Ca2+ - Mg2+ - Cl- to Ca2+ - Na+ - HCO3-, primarily distributed in Permian felsic volcanic formations. These distinct water types are primarily the result of interactions between water and rock, precipitation processes, and ion exchange phenomena. Geochemical simulation results demonstrated the supersaturation of aragonite, calcite, and dolomite minerals, leading to the precipitation of carbonate minerals. Concurrently, the simulation indicated a tendency to dissolve minerals such as fluorite, gypsum, halite, and sylvite. The assessment of water quality using the WQI indicates that, in accordance with QCVN 01-1:2018/BYT 2018 standards, the majority of groundwater and streamwater are suitable for domestic use. However, exceptions exist in certain sample locations where water quality exceeds permissible standards, primarily due to elevated levels of Fe, Mn, and NO3- concentration. Hence, it is important to implement water treatment processes for the water sourced from these specific locations before their utilization in daily activities to ensure the safety and well-being of the local population.

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Section: Saturation Indexsupporting

confidence: 92%

Hydrogeochemical characteristic and water quality index of groundwater and streamwater at Nam Mu River basin, Lai Chau province in northwest Vietnam

Do,

Dung,

Tran

et al. 2024

Environ. Res. Commun.

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“…The study was conducted with the aim of developing a numerical model for this area to understand system behavior with changes in hydrological stresses. The finite difference computer code MODFLOW (Modular 3D finite difference flow) with Groundwater Modeling System (GMS) as pre-processor and postprocessor was used to simulate the groundwater flow in this study [33].…”

Section: Groundwater Simulation Modelsmentioning

confidence: 99%

Modeling the Impacts of Climate Change on Groundwater Resources: A Review

Ali

Khan

Pandey

et al. 2020

IJECC

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Global atmospheric general circulation models (GCMs) were developed to simulate the current climate and are used to predict climate change. Several Global Climate Models (GCM’s) are available for understanding and projecting climate change. GCM requires to be downscale on a basin-scale and combined with applicable hydrological models considering all components of the hydrologic process. The performance of such coupling models, such as groundwater recharge quantification, should help to make correct adaptation strategies. Climate change has the ability to affect both the quality and quantity of available groundwater, mainly through impact on recharge, evapotranspiration, pump-age and abstraction. As a consequence, groundwater is a significant contributor to the streamflow in areas with fairly shallow water resources, knowing how climate change could impact groundwater supplies is crucial for long-term water resource management. The effect of climate change on groundwater systems is very difficult to predict. Part of the uncertainty of climate predictions is embedded of possibilities. Better insights, a more profound knowledge of mechanisms and modeling skills are required to determine this critical resource’s potential in the face of predicted climate change.

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“…Coastal aquifers along the Chennai city are under stress due to excess groundwater pumping. A model was developed using groundwater modelling system (GMS) to understand the behaviour of the aquifer with the changes in hydrological stresses (Elango and Sivakumar 2008). Excessive withdrawal of groundwater without having proper planning of water recharge becomes the cause of rapid depletion of groundwater in the Ganga river basin.…”

Section: Introductionmentioning

confidence: 99%

Groundwater modelling using an analytic element method and finite difference method: An insight into Lower Ganga river basin

et al. 2019

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Groundwater flow modelling provides the water flow dynamics for the estimation and prediction of groundwater movement and its condition in the aquifer. The modelling helps for the management of the groundwater resources under various hydrological and anthropogenic stresses. In this paper, a modelling exercise was performed using the analytic element method (AEM) and finite difference method (FDM) for the part of Ganga river basin which includes the Varanasi district. Further compression was performed to understand the limitations and benefits of both AEM and FDM based on ease of model development, data requirement and their performances. The groundwater model was developed for the transient state condition based on data for the year 2004-2017. The results show that for most of the observed wells, the difference between the observed head and the simulated head is found in the 90% confidence level. It is found that the AEM does not require a fixed boundary condition which makes the development of the conceptual model less complicated. In the FDM, pumping wells are approximately located and averaged over the cell which becomes a cause of the inaccurate location of the wells. It is found that model development in the AEM is less complicated compared to the FDM. It can be concluded that in some cases AEM-based modelling is more accurate as compared to FDM-based flow modelling. This study can be very helpful for groundwater professionals in deciding the best suitable method for their study area and to avoid the complexity of the model.

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Regional Simulation of a Groundwater Flow in Coastal Aquifer, Tamil Nadu, India

Cited by 4 publications

References 1 publication

Hydrogeochemical characteristic and water quality index of groundwater and streamwater at Nam Mu River basin, Lai Chau province in northwest Vietnam

Hydrogeochemical characteristic and water quality index of groundwater and streamwater at Nam Mu River basin, Lai Chau province in northwest Vietnam

Modeling the Impacts of Climate Change on Groundwater Resources: A Review

Groundwater modelling using an analytic element method and finite difference method: An insight into Lower Ganga river basin

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