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ETDEWEB   /       /    Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina

Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina

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Abstract

The Guarani Aquifer System (GAS) is the largest aquifer in South America. Previous regional hydrochemical and isotopic studies suggested that discharge may occur at wetlands and reaches of the Parana and Uruguay Rivers. Preliminary findings of a project aimed at verifying the discharge hypothesis on the southern GAS region are presented. The hydrochemical- isotopic composition of 17 samples from surface and groundwater in that area were analysed. Some waters showed chemical facies and isotopic (stable isotope and carbon-14) signatures similar to the formerly identified as GAS+pre-GAS formations. Admixtures between modern and GAS+pre-GAS waters were found at depths between less than 100 m and 200 m. A 96 m deep well located near the Ibera lagoon showed chemical and isotopic composition indicating presence of GAS waters. The hydraulic gradient favours upward flow near the wetlands, but surface waters seem to originate from local recharge. Investigations continue, incorporating {sup 222}Rn and new sampling sites. (author)
Authors:
Vives, L., E-mail: lvives@faa.unicen.edu.ar; [1]  Rodriguez, L.; [2]  Manzano, M.; [3]  Valladares, A.; [4]  Aggarwal, P. K.; Araguas Araguas, L. [5] 
  1. Instituto de Hidrologia de Llanuras, Universidad Nacional del Centro de la Provincia de Buenos Aires, Azul (Argentina)
  2. Centro de Estudios Hidroambientales, Facultad de Ingenieria y Ciencias Hidricas, Universidad Nacional del Litoral, Santa Fe (Argentina)
  3. Escuela de Ingenieria de Caminos y de Minas, Universidad Politecnica de Cartagena, Cartagena (Spain)
  4. Subsecretaria de Recursos Hidricos (Argentina)
  5. International Atomic Energy Angency, Vienna (Austria)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/171
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 7 figs., 6 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. Vol. I. Proceedings of an International Symposium| 547 p.
Subject:
58 GEOSCIENCES; ADMINISTRATIVE PROCEDURES; AQUIFERS; ARGENTINA; CARBON 14; GROUND WATER; GROUNDWATER RECHARGE; HYPOTHESIS; ISOTOPE RATIO; RADON 222; RIVERS; SAMPLING; STABLE ISOTOPES; SURFACES; URUGUAY; WETLANDS
OSTI ID:
22122085
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0842078196
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1580_vol1_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 327-336
Announcement Date:
Aug 29, 2013

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Citation Formats

Vives, L., E-mail: lvives@faa.unicen.edu.ar, Rodriguez, L., Manzano, M., Valladares, A., Aggarwal, P. K., and Araguas Araguas, L. Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina. IAEA: N. p., 2013. Web.
Vives, L., E-mail: lvives@faa.unicen.edu.ar, Rodriguez, L., Manzano, M., Valladares, A., Aggarwal, P. K., & Araguas Araguas, L. Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina. IAEA.
Vives, L., E-mail: lvives@faa.unicen.edu.ar, Rodriguez, L., Manzano, M., Valladares, A., Aggarwal, P. K., and Araguas Araguas, L. 2013. "Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina." IAEA.
@misc{etde_22122085,
title = {Preliminary Analysis of the Role of Wetlands and Rivers in the Groundwater Discharge of the Guarani Aquifer System in NE Argentina}
 author = {Vives, L., E-mail: lvives@faa.unicen.edu.ar, Rodriguez, L., Manzano, M., Valladares, A., Aggarwal, P. K., and Araguas Araguas, L.}
 abstractNote = {The Guarani Aquifer System (GAS) is the largest aquifer in South America. Previous regional hydrochemical and isotopic studies suggested that discharge may occur at wetlands and reaches of the Parana and Uruguay Rivers. Preliminary findings of a project aimed at verifying the discharge hypothesis on the southern GAS region are presented. The hydrochemical- isotopic composition of 17 samples from surface and groundwater in that area were analysed. Some waters showed chemical facies and isotopic (stable isotope and carbon-14) signatures similar to the formerly identified as GAS+pre-GAS formations. Admixtures between modern and GAS+pre-GAS waters were found at depths between less than 100 m and 200 m. A 96 m deep well located near the Ibera lagoon showed chemical and isotopic composition indicating presence of GAS waters. The hydraulic gradient favours upward flow near the wetlands, but surface waters seem to originate from local recharge. Investigations continue, incorporating {sup 222}Rn and new sampling sites. (author)}
 place = {IAEA}
 year = {2013}
 month = {Jul}
 }