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GroMoPo Metadata for Lakshadweep atoll model


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Created: Feb 08, 2023 at 3:27 a.m.
Last updated: Feb 08, 2023 at 3:27 a.m.
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Abstract

The groundwater is the only source of availability of fresh water in tiny coral islands. In the past decades, there has been growing demand for fresh water to meet the need of domestic besides other purposes. The aquifer system on these islands is fragile besides being subjected to various stresses like high subsurface discharge, increased abstraction, improper disposal of waste water and tidal waves of ocean all of which subject the aquifer prone to sea water intrusion and thus reduction and deterioration the water quality. Therefore, understanding the aquifer's behavior and then work out a sustainable option for fresh water is essential. The paper concerns optimizing of pumping and artificial recharge paces to reduce the effects of various stresses over tiny and fragile lens-shaped coral island aquifer system. The density driven ground water flow was simulated using SEAWAT (MODFLOW and MT3D based computer program) model. Detailed hydrogeological investigations were carried out to determine the quantity of freshwater that could be pumped to avoid the seawater intrusion into the aquifer through modeling. Initial heads, physical parameters and boundary conditions of the study area have been defined in the model based on field data, geophysical measurements and interpretations and hydrogeological studies. The model was calibrated by obtaining a match of computed and observed values of the water table, as hydraulic head is much more sensitive to pumping rates than any other stress. A few sentences about: flow model were utilized to derive optimal pumping rate; the effect of artificial recharge through the model, has also proved that the salt-water intrusion could be stopped by raising the water level through temporarily storing the artificially recharged water post construction of subsurface dam near the coast. (C) 2011 Elsevier Ltd. All rights reserved.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
India
North Latitude
11.7306°
East Longitude
73.7939°
South Latitude
9.9949°
West Longitude
72.0572°

Content

Additional Metadata

Name Value
DOI 10.1016/j.pce.2011.04.014
Depth 10
Scale < 10 km²
Layers 1
Purpose Groundwater resources
GroMoPo_ID 166
IsVerified True
Model Code SEAWAT
Model Link https://doi.org/10.1016/j.pce.2011.04.014
Model Time SS
Model Year 2011
Model Authors Banerjee, P; Singh, VS
Model Country India
Data Available Report/paper only
Developer Email vns_pal@yahoo.co.in
Dominant Geology Unconsolidated sediments
Developer Country India
Publication Title Optimization of pumping rate and recharge through numerical modeling with special reference to small coral island aquifer
Original Developer No
Additional Information Detailed hydrogeological investigations were carried out on Indian atolls and islands to determine the quantity of freshwater that could be pumped to avoid the seawater intrusion into the aquifer through modeling. Initial heads, physical parameters and boundary conditions of the study area have been defined in the model based on field data, geophysical measurements and interpretations and hydrogeological studies.
Integration or Coupling Water use;Water management
Evaluation or Calibration Static water levels;Groundwater chemistry
Geologic Data Availability Yes

How to Cite

GroMoPo, E. Leijnse (2023). GroMoPo Metadata for Lakshadweep atoll model, HydroShare, http://www.hydroshare.org/resource/c7588aa11fab4a51a65e5fb1cc0f1af1

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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