GroMoPo Metadata for Guarani Aquifer Uruguay-Brazil border region model

Authors:

GroMoPo Sacha Ruzzante

Owners:

gromopo_admin

Type:

Resource

Storage:

The size of this resource is 2.8 KB

Created:

Feb 08, 2023 at 2:51 a.m.

Last updated:

Feb 08, 2023 at 2:51 a.m.

Citation:

See how to cite this resource

Sharing Status:	Public
Views:	803
Downloads:	223
+1 Votes:	Be the first one to this.
Comments:	No comments (yet)

Abstract

The cities of Rivera and Santana do Livramento are located on the outcropping area of the sandstone Guarani Aquifer on the Brazil-Uruguay border, where the aquifer is being increasingly exploited. Therefore, recharge estimates are needed to address sustainability. First, a conceptual model of the area was developed. A multilayer, heterogeneous and anisotropic groundwater-flow model was built to validate the conceptual model and to estimate recharge. A field campaign was conducted to collect water samples and monitor water levels used for model calibration. Field data revealed that there exists vertical gradients between confining basalts and underlying sandstones, suggesting basalts could indirectly recharge sandstone in fractured areas. Simulated downward flow between them was a small amount within the global water budget. Calibrated recharge rates over basalts and over outcropping sandstones were 1.3 and 8.1% of mean annual precipitation, respectively. A big portion of sandstone recharge would be drained by streams. The application of a water balance yielded a recharge of 8.5% of average annual precipitation. The numerical model and the water balance yielded similar recharge values consistent with determinations from previous authors in the area and other regions of the aquifer, providing an upper bound for recharge in this transboundary aquifer.

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Brazil, Uruguay

North Latitude

-30.8000°

East Longitude

-55.4000°

South Latitude

-31.1000°

West Longitude

-55.7000°

Streets Terrain Satelite

Spatial Extent

Content

Learn more about the BagIt download

Select a file to see file type metadata.

Additional Metadata

Name	Value
DOI	10.1007/s10040-010-0630-0
Depth	350
Scale	101 - 1 000 kmÂ²
Layers	2-5 layers
Purpose	Groundwater resources
GroMoPo_ID	141
IsVerified	True
Model Code	MODFLOW
Model Link	https://doi.org/10.1007/s10040-010-0630-0
Model Time	SS
Model Year	2010
Model Authors	A. Gomez, L. B. RodrÃguez, L. S. Vives
Model Country	Brazil, Uruguay
Data Available	Report/paper only
Developer Email	aagomez@fich1.unl.edu.ar
Dominant Geology	Model focuses on multiple geologic materials
Developer Country	Argentina
Publication Title	The Guarani Aquifer System: estimation of recharge along the Uruguay-Brazil border
Original Developer	No
Additional Information	The cities of Rivera and Santana do Livramento are located on the outcropping area of the sandstone Guarani Aquifer on the Brazilâ€“Uruguay border, where the aquifer is being increasingly exploited. Therefore, recharge estimates are needed to address sustainability. First, a conceptual model of the area was developed. A multilayer, heterogeneous and anisotropic groundwater-flow model was built to validate the conceptual model and to estimate recharge. A field campaign was conducted to collect water samples and monitor water levels used for model calibration. Field data revealed that there exists vertical gradients between confining basalts and underlying sandstones, suggesting basalts could indirectly recharge sandstone in fractured areas. Simulated downward flow between them was a small amount within the global water budget. Calibrated recharge rates over basalts and over outcropping sandstones were 1.3 and 8.1% of mean annual precipitation, respectively. A big portion of sandstone recharge would be drained by streams. The application of a water balance yielded a recharge of 8.5% of average annual precipitation. The numerical model and the water balance yielded similar recharge values consistent with determinations from previous authors in the area and other regions of the aquifer, providing an upper bound for recharge in this transboundary aquifer.
Integration or Coupling
Evaluation or Calibration	Static water levels
Geologic Data Availability

How to Cite

GroMoPo, S. Ruzzante (2023). GroMoPo Metadata for Guarani Aquifer Uruguay-Brazil border region model, HydroShare, http://www.hydroshare.org/resource/7a2470dffc9d4ccdaecc9789a45fe23a

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

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

Comments

There are currently no comments

	Name:
	Organization:
	Email:
	Address:
	Phone:
	Homepage:
	Author Identifiers: