Using H, O, Rn isotopes and hydrometric parameters to assess the surface water-groundwater interaction in coastal wetlands associated to the marginal forest of the Río de la Plata

Santucci, Lucía; Sanci, Romina; Carol, Eleonora Silvina; Villalba, Esteban; Héctor, Panarello

doi:10.1016/j.csr.2019.08.002

Cited by 16 publications

(2 citation statements)

References 25 publications

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“…La planicie costera del Río de la Plata presenta marcadas variaciones geomorfológicas donde ambientes de antiguas llanura intemareales coexisten con depósitos de barras arenosas y albardón en el estuario interior, marismas dulces y cordones litorales en el estuario medio y marismas salinas, cordones litorales y mantos arenosos en el estuario exterior (Cavallotto et al, 2005;Violante et al, 2001). Estas variaciones, sumadas a aquellas propias de la dinámica y salinidad del agua del estuario, dan lugar a cambios en la hidroquímica del agua subterránea somera (Carol et al, 2009;Carol et al, 2013;Cellone et al, 2019;Santucci et al, 2019).…”

Section: Discussionunclassified

Variaciones geomorfológicas como condicionantes de la química del agua subterránea en el litoral del estuario medio del Río de la Plata

Melo

Carol

2020

RMLP

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El objetivo del trabajo es determinar los cambios en la química del agua subterránea y los procesos geoquímicos asociados en función de las variaciones geomorfológicas en el ámbito de la planicie costera del Río de la Plata en el sector litoral del estuario medio. Para ello se estableció una red de monitoreo que involucra puntos de muestreo de agua superficial y subterránea donde se determinó el contenido de iones mayoritarios, nitrato e isótopos estables de la molécula de agua. El contenido en isótopos ambientales registra, para el caso del agua subterránea, que el agua de lluvia infiltra sin previa evaporación y recarga al agua subterránea somera. Las muestras de agua superficial presentan porcentajes de evaporación menores al 10%. Estos bajos porcentajes pueden deberse a que el muestreo se realizó en un mes de excesos hídricos. En cuanto al contenido de iones mayoritarios se registran variaciones en función de la geomorfología. Así, la antigua llanura intermareal y la planicie con cordones de conchilla presentan facies que varían según la profundidad del muestreo entre bicarbonatada sódica y clorurada sódica. Estas variaciones estarían controladas por la composición original del agua meteórica y las reacciones químicas producto de la interacción con el sedimento. Particularmente, la química del agua subterránea de la marisma está regulada por los flujos mareales provenientes del Río de la Plata.

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Section: Discussionunclassified

Variaciones geomorfológicas como condicionantes de la química del agua subterránea en el litoral del estuario medio del Río de la Plata

Melo

Carol

2020

RMLP

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“…The shallow groundwater discharges into streams and depressed areas, and the regional groundwater flow is toward the Río de la Plata [51,52]. Additionally, in coastal sectors during high tides, the aquifer may receive inputs from the estuary [53,54].…”

Section: Methodsmentioning

confidence: 99%

A Seismic Monitoring Tool for Tidal-Forced Aquifer Level Changes in the Río de la Plata Coastal Plain, Argentina

Galone,

Panzera,

Colica

et al. 2024

Sustainability

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Ambient seismic noise has gained extensive applications in seismology and plays a pivotal role in environmental seismic studies. This study focuses on the Río de la Plata Coastal Plain, employing the horizontal-to-vertical spectral ratio (HVSR) method on ambient seismic noise records to analyze subsurface dynamics. The region’s hydrogeology is complex, featuring partially interconnected coastal aquifers. The HVSR analysis reveals two peaks, with P0 associated with the sediment-basement interface and P1 linked to a shallower stratigraphic discontinuity. Temporal analysis of P1 highlights cyclical patterns correlated with estuarine levels, suggesting a relationship between variations in seismic velocities and tidal dynamics. Comparisons with aquifer data support the hypothesis that tidal variations influence subsurface mechanical properties, impacting the HVSR function. The study hints at the potential of ambient seismic noise analysis as a non-invasive and cost-effective method for studying coastal aquifers and understanding groundwater dynamics. Ongoing research aims to further explore these relationships for enhanced groundwater resource management.

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Assessment of anthropogenic pollution using multiple hydrogeochemical tools and statistical analysis in rural plain basins of the Argentinian Pampean Plain

Borzi

Idaszkin

Tanjal

et al. 2021

River Research & Apps

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Chemistry of surface water and groundwater can be conditioned by geology, anthropic influence, and exchange of flow between them. The Pampean Plain located in Argentina has gaining streams and mainly rural activities. An increase in the concentration of chemical values of surface waters with respect to groundwater can be attributed to the anthropogenic contribution. The aim of this work was to identify the natural and/or anthropic processes that determine the chemistry of surface water and groundwater in a sector of the Pampean Plain of Argentina through the analysis of major and trace elements, 18 O and 2 H isotopes, and statistical tools. A surface water and groundwater sampling network was designed, where physicochemical parameters were measured, and samples were taken to determine major and trace elements and stable isotopes of water. The results indicate that dissolution, cation exchange, and evaporation are the main processes that determine the chemistry of the major elements associated with natural processes without showing evidence of anthropic involvement. Some trace elements that are statistically associated with major ions evidence water-sediment interaction within the aquifer. On the other hand, trace elements, as heavy metals, present a higher concentration in surface water compared to groundwater. This fact, evidences an anthropogenic contribution attributable to anthropic activities. The multivariate statistical analysis allowed discriminating between those trace elements associated with natural processes from those influenced by anthropic activity, even when these elements' concentration was very low. K E Y W O R D Sgaining streams, geochemical processes, multivariate statistical analysis, Samboromb on River basin, trace pollutants | INTRODUCTIONThe chemistry of surface water and groundwater can be controlled by many factors, including atmospheric chemistry, geology, vegetation (or organic matter decay), and also anthropic factors (Jiang, Wu,

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Using H, O, Rn isotopes and hydrometric parameters to assess the surface water-groundwater interaction in coastal wetlands associated to the marginal forest of the Río de la Plata

Cited by 16 publications

References 25 publications

Variaciones geomorfológicas como condicionantes de la química del agua subterránea en el litoral del estuario medio del Río de la Plata

Variaciones geomorfológicas como condicionantes de la química del agua subterránea en el litoral del estuario medio del Río de la Plata

A Seismic Monitoring Tool for Tidal-Forced Aquifer Level Changes in the Río de la Plata Coastal Plain, Argentina

Assessment of anthropogenic pollution using multiple hydrogeochemical tools and statistical analysis in rural plain basins of the Argentinian Pampean Plain

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