Key hydrological processes in the Del Azul Creek basin, sub-humid Pampean Plain.
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Zabala, M. Emilia; Gorocito, Martín; Dietrich, Sebastián; Varni, Marcelo; Sánchez Murillo, Ricardo; [et al.]Área de conocimiento
Explotación de MinasPatrocinadores
This research was supported by the Instituto de Hidrología de Llanuras ‘‘Dr. Eduardo J. Usunoff” (IHLLA, Argentina) and the project PICT 2016 Nº 3688. The first, third and seventh authors are funded by the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, Argentina), while the second author is funded by the Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT, Argentina). We thank the IHLLA technical staff Enrique Queupán, Joaquín Rodríguez María Fátima Altolaguirre, Ornella Floriani and Georgina Cazenave, for their assistance in carrying out the water sampling, the chemical analyses and the superficial flow rate measurements. Special thanks to Mariana Oyarzabal for English assistance. The authors welcome comments from anonymous reviewers, whose observations have been very helpful improving the manuscript.Realizado en/con
Instituto de Hidrología de Llanuras, ArgentinaFecha de publicación
2021-02-21Editorial
ElsevierCita bibliográfica
Zabala, M.E.; Gorocito, M.; Dietrich, S.; Varni, M.; SÁnchez Murillo, R.; Manzano, M.; Ceballos, E. 2020. Key hydrological processes in the Del Azul Creek basin, sub-humid Pampean Plain. Science of The Total Environment, 754 (2021) 142258. https://doi.org/10.1016/j.scitotenv.2020.142258Revisión por pares
siPalabras clave
Hydrological-physical processesStable isotopes
Rainwater
Surface water
Groundwater
Pampeano aquifer
Localización
Resumen
Groundwater plays an important role in the economic development of the Chaco-Pampean Plain (Argentina), where industry, agriculture and cattle farming are the main economic activities. The 66% of the country's popu-lation lives in this area. The low slopes of this region condition the water movement and the occurrence of phys-ical and chemical processes. The aim of this work is to update the hydrological conceptual model of the Del Azul Creek basin (Buenos Aires Province), a sub-humid and continental plain, using environmental tracers. In total, the study was based on the analysis of 201 samples (stable isotopes) and 184 samples (chemical data) including rain-water, surface water and groundwater. The temporal and spatial variation in the isotopic composition of rainfall and the hydrological physical-processes, evaporation, surface water-groundwater interaction and recharge were studied. Isotopic compositions of rainfall revealed a seasonal variation across the basin. Low δ18O rainfalls ...
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