Ricardo Oyarzún

Research Field

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Citations (8)

Forthcoming Papers

Clays and Clay Minerals (2006)

Emmanuel Laverret Patricia Patrier Mas Daniel Beaufort Philippe Kister David Quirt

10.1346/000986006776623235

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Where does the water go? Understanding geohydrological behaviour of Andean catchments in south-central Chile

Hydrological Sciences Journal (2014)

José Luis Arumí Héctor Maureira Maxime Souvignet C. Pérez Pérez Diego Rivera

Upper Diguillín and Renegado are two neighbouring Andean basins of south-central Chile, with different specific discharges that cannot be explained solely by their difference in size. To address this issue, this study considers three separate but complementary approaches: (a) long-term analysis of rainfall and flow trends; (b) determination of hydrogeological properties at the watershed scale; and (c) analysis of the temporal evolution of groundwater storage. First, a trend test detected a statistically significant discharge decrease for Renegado in summer, unrelated to a coincidental precipitation trend, which seems to be associated with an increased use of water in that season related to tourism activity in the area. Second, there were no important differences in hydraulic conductivity or drainable porosity between the two study areas. However, it was found that there is a long-term negative trend in groundwater storage for Renegado; that is, water that contributes to the lower Diguillín streamflow through numerous springs.

Water storage

10.1080/02626667.2014.934250

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Citations (12)

Geologic and metallogenic aspects concerning the Nahuelbuta mountains banded iron formation, Chile

Mineralium Deposita (1986)

Ricardo Oyarzún H. Clemmey Santiago Collao

Banded iron formation

Mineral resource classification

10.1007/bf00199808

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Citations (4)

Abandoned tailings deposits, acid drainage and alluvial sediments geochemistry, in the arid Elqui River Basin, North-Central Chile

Journal of Geochemical Exploration (2012)

Jorge Oyarzún Daniela Castillo Hugo Maturana Nicole Kretschmer Guido Soto

Acid Mine Drainage

Deposition

10.1016/j.gexplo.2012.02.008

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Citations (25)

Erratum: Assessing groundwater recharge in an Andean closed basin using isotopic characterization and a rainfall-runoff model: Salar del Huasco basin, Chile

Hydrogeology Journal (2016)

Javier Uribe José F. Muñoz Jorge Gironás Ricardo Oyarzún Evelyn Aguirre

10.1007/s10040-016-1383-1

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Assessing groundwater recharge in an Andean closed basin using isotopic characterization and a rainfall-runoff model: Salar del Huasco basin, Chile

Hydrogeology Journal (2015)

Javier Uribe José F. Muñoz Jorge Gironás Ricardo Oyarzún Evelyn Aguirre

Water cycle

10.1007/s10040-015-1300-z

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Citations (48)

The Almadén district (Spain): Anatomy of one of the world's largest Hg-contaminated sites

The Science of The Total Environment (2005)

Pablo Higueras Ricardo Oyarzún Javier Lillo Juan C. Sánchez‐Hernández José Antonio Molina

Mercury

Cinnabar

Methylmercury

Asparagus

10.1016/j.scitotenv.2005.04.042

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Citations (149)

A hydrogeochemistry and isotopic approach for the assessment of surface water–groundwater dynamics in an arid basin: the Limarí watershed, North-Central Chile

Environmental Earth Sciences (2014)

Ricardo Oyarzún Elizabeth Jofré P Morales Hugo Maturana Jorge Oyarzún

10.1007/s12665-014-3393-4

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Citations (38)

Interaction of water components in the semi-arid Huasco and Limarí river basins, North Central Chile

Advances in geosciences (2009)

Gerhard Strauch Ricardo Oyarzún Frido Reinstorf J. Oyarzún Mario Schirmer

Abstract. For sustainable water resource management in semi-arid regions, sound information is required about interactions between the different components of the water system: rain/snow precipitation, surface/subsurface run-off, groundwater recharge. Exemplarily, the Huasco and Limarí river basins as water stressed river catchments have been studied by isotope and hydrochemical methods for (i) the origin of water, (ii) water quality, (iii) relations of surface and groundwater. Applying the complex multi-isotopic and hydrochemical methodology to the water components of the Huasco and Limarí basins, a differentiation of water components concerning subsurface flow and river water along the catchment area and by anthropogenic impacts are detected. Sulphate and nitrate concentrations indicate remarkable input from mining and agricultural activities along the river catchment. The 2H-18O relations of river water and groundwater of both catchments point to the behaviour of river waters originated in an arid to semi-arid environment. Consequently, the groundwater from several production wells in the lower parts of the catchments is related to the rivers where the wells located, however, it can be distinguished from the river water. Using the hydrological water balance and the isotope mixing model, the interaction between surface and subsurface flows and river flow is estimated.

Subsurface Flow

Water balance

10.5194/adgeo-22-51-2009

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Citations (16)

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