GroMoPo Metadata for Guarani Aquifer System model

Authors:

GroMoPo David Serrano

Owners:

gromopo_admin

Type:

Resource

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The size of this resource is 2.6 KB

Created:

Feb 07, 2023 at 2:31 p.m.

Last updated:

Feb 07, 2023 at 2:31 p.m.

Citation:

See how to cite this resource

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Abstract

The Guarani Aquifer System (GAS) is a strategic transboundary aquifer system shared by Brazil, Argentina, Paraguay and Uruguay. This article presents a groundwater flow model to assess the GAS system in terms of regional flow patterns, water balance and overall recharge. Despite the continental dimension of GAS, groundwater recharge is restricted to narrow outcrop zones. An important part is discharged into local watersheds, whereas a minor amount reaches the confined part. A three-dimensional finite element groundwater-flow model of the entire GAS system was constructed to obtain a better understanding of the prevailing flow dynamics and more reliable estimates of groundwater recharge. Our results show that recharge rates effectively contributing to the regional GAS water balance are only approximately 0.6 km(3)/year (about 4.9 mm/year). These rates are much smaller than previous estimates, including of deep recharge approximations commonly used for water resources management. Higher recharge rates were also not compatible with known(81)Kr groundwater age estimates, as well as with calculated residence times using a particle tracking algorithm.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Brazil, Argentina, Paraguay, Uruguay

North Latitude

-18.0000°

East Longitude

-47.0000°

South Latitude

-32.0000°

West Longitude

-60.0000°

Streets Terrain Satelite

Spatial Extent

Content

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Additional Metadata

Name	Value
DOI	10.3390/w12092323
Depth	1200
Scale	1.2 million km2
Layers	2-5 layers
Purpose	groundwater resources;regional flow patterns, water balance and overall recharge
GroMoPo_ID	50
IsVerified	True
Model Code	Feflow
Model Link	https://doi.org/10.3390/w12092323
Model Time	steady state flow regime
Model Year	2020
Model Authors	R. GonÃ§alves 1 , E. Teramoto 2, H. Chang 3
Model Country	Brazil, Argentina, Paraguay, Uruguay
Data Available	report/paper only
Developer Email	chang.hung-kiang@unesp.br
Dominant Geology	volcanic
Developer Country	Brasil
Publication Title	Regional Groundwater Modeling of the Guarani Aquifer System
Original Developer	No
Additional Information	The Guarani Aquifer System (GAS) is a strategic transboundary aquifer system shared by Brazil, Argentina, Paraguay and Uruguay. This article presents a groundwater flow model to assess the GAS system in terms of regional flow patterns, water balance and overall recharge. Despite the continental dimension of GAS, groundwater recharge is restricted to narrow outcrop zones. An important part is discharged into local watersheds, whereas a minor amount reaches the confined part. A three-dimensional finite element groundwater-flow model of the entire GAS system was constructed to obtain a better understanding of the prevailing flow dynamics and more reliable estimates of groundwater recharge. Our results show that recharge rates effectively contributing to the regional GAS water balance are only approximately 0.6 km3/year (about 4.9 mm/year). These rates are much smaller than previous estimates, including of deep recharge approximations commonly used for water resources management. Higher recharge rates were also not compatible with known 81Kr groundwater age estimates, as well as with calculated residence times using a particle tracking algorithm.
Integration or Coupling	None of the above
Evaluation or Calibration	static water levels
Geologic Data Availability

How to Cite

GroMoPo, D. Serrano (2023). GroMoPo Metadata for Guarani Aquifer System model, HydroShare, http://www.hydroshare.org/resource/4c25ebbb8fdd41f7a5d2a2d2a84ca72b

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

http://creativecommons.org/licenses/by/4.0/

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