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GroMoPo Metadata for Almeria saline groundwater model


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Created: Feb 07, 2023 at 6:25 p.m.
Last updated: Feb 07, 2023 at 6:25 p.m.
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Abstract

This study tests for the first time the long-term effects of pumping saline groundwater (SGW) as feed for a desalination plant on a coastal aquifer. Field measurements combined with 3D modeling of the hydrological conditions were conducted to examine the effects of SGW pumping on the aquifer system. The plant is next to the city of Almeria (South East Spain) and has been operating since 2006. It uses multiple beach wells along the shore to draw SGW from beneath the fresh-saline water interface (FSI) of the Andarax coastal aquifer. The long-term impact of the intensive pumping on the aquifer was assessed by electrical conductivity profiles in three observation wells dining 12 years of pumping. The FSI deepened with continuous pumping, reaching a decrease of similar to 50 m in the observation well closest to the pumping wells. A calibrated three-dimensional numerical model of the Anthrax aquifer replicates the freshening of the aquifer due to the continuous pumping, resulting in a salinity decrease of similar to 16% in the vicinity of the wells. The salinity decrease stabilizes at 17%, and the model predicts no further significant decrease in salinity for additional 20 years. Submarine groundwater discharge is lowered due to the SGW pumping and similar to 19,000,000 m(3) of freshwater has not lost to the sea during the 12 years of pumping with a rate of similar to 1,100,000 m(3) yr(-1) after 6 years of pumping. After pumping cessation, hydrostatic equilibrium would take about 20 years to recover. This work presents the complex dynamics of the HI due to the SGW pumping for desalination in the first real long-term scenario. It shows by combining field work and numerical modeling, a significant freshening of the aquifer by pumping SGW, emphasizing an additional advantage and the effectiveness of this use as a negative hydraulic barrier against seawater intrusion. (C) 2020 Elsevier B.V. All rights reserved.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Spain
North Latitude
36.8737°
East Longitude
-2.3912°
South Latitude
36.8046°
West Longitude
-2.4812°

Content

Additional Metadata

Name Value
DOI 10.1016/j.scitotenv.2020.139249
Depth 100
Scale < 100 km²
Layers >20 layers
Purpose groundwater resources;salt water intrusion
GroMoPo_ID 74
IsVerified True
Model Code Feflow
Model Link https://doi.org/10.1016/j.scitotenv.2020.139249
Model Time SS and pumping scenarios (up to 20yrs)
Model Year 2020
Model Authors Shaked Stein, Fernando Sola, Yoseph Yechieli, Eyal Shalev, Orit Sivan, Roni Kasher, Angela Vallejos
Model Country Spain
Data Available report/paper only
Developer Email shakedst@post.bgu.ac.il
Dominant Geology unconsolidated
Developer Country Israel
Publication Title The effects of long-term saline groundwater pumping for desalination on the fresh-saline water interface: Field observations and numerical modeling
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 Almeria saline groundwater model, HydroShare, http://www.hydroshare.org/resource/dd68fabcd8bf4d4a8f2c810d779a25be

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

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

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