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GroMoPo Metadata for Coastal fresh-saltwater interface model


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Created: Feb 07, 2023 at 6:23 p.m.
Last updated: Feb 07, 2023 at 6:24 p.m.
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Abstract

Over the past few decades, seawater desalination has become a necessity for freshwater supply in many countries worldwide, particularly in arid and semi-arid regions. One potentially high-quality feed water for desalination is saline groundwater (SGW) from coastal aquifers, which has lower fouling propensity than seawater. This study examines the effect of pumping SGW from a phreatic coastal aquifer on fresh groundwater, particularly on the dynamics of the fresh-saline water interface (FSI). Initially, we constructed a 3D finite-element model of a phreatic coastal aquifer by using the FEFLOW software, which solves the coupled variable density groundwater flow and solute transport equations. Then, we compared and validated the results of the model to those of a field-scale pumping test. The model indicates that pumping SGW from a coastal aquifer freshens the aquifer and rehabilitates parts that were salinized due to seawater intrusion - an effect that increases with increasing pumping rate. In addition, when simultaneously pumping fresh groundwater further inland and SGW from below the FSI, the freshening effect is less pronounced and the salinity of the aquifer is more stable. In line with the results of the model, the field experiment revealed that salinity in the observation well decreases over the course of pumping. Taken together, our findings demonstrate that, in addition to providing a high-quality source feed water for desalination, pumping SGW does not salinize the aquifer and even rehabilitates it by negating the effect of seawater intrusion. These findings are important for planning shoreline desalination facilities and for managing arid coastal regions with lack of water supply and over exploited aquifers. (C) 2019 Published by Elsevier Ltd.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Israel
North Latitude
31.7288°
East Longitude
34.5950°
South Latitude
31.7230°
West Longitude
34.5865°

Content

Additional Metadata

Name Value
DOI 10.1016/j.watres.2019.03.003
Depth 300
Scale < 100 km²
Layers 11-15 layers
Purpose groundwater resources;salt water intrusion
GroMoPo_ID 73
IsVerified True
Model Code Feflow
Model Link https://doi.org/10.1016/j.watres.2019.03.003
Model Time SS and scenarios
Model Year 2019
Model Authors Shaked Stein, Yoseph Yechieli, Eyal Shalev, Roni Kasher, Orit Sivan
Model Country Israel
Data Available report/paper only
Developer Email yechieli@gsi.gov.il
Dominant Geology unconsolidated
Developer Country Israel
Publication Title The effect of pumping saline groundwater for desalination on the fresh-saline water interface dynamics
Original Developer No
Additional Information
Integration or Coupling Solute transport
Evaluation or Calibration contaminant concentrations
Geologic Data Availability

How to Cite

GroMoPo, D. Zamrsky (2023). GroMoPo Metadata for Coastal fresh-saltwater interface model, HydroShare, http://www.hydroshare.org/resource/d345aa2af9124d06b689c8a7b8fc182d

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

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

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