Origin and dynamics of surface water - groundwater flows that sustain the Matusagaratí Wetland, Panamá

Carol, Eleonora Silvina; Álvarez, María del Pilar; Santucci, Lucía; Candanedo, Indra; Arcia, Manuel

doi:10.1007/s00027-021-00847-y

Cited by 5 publications

(2 citation statements)

References 53 publications

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“…SW-GW interaction has been studied in lagoon estuaries [23][24][25][26] and in wetlands [27]. However, the study of this effect using radioisotopes in ice-covered basins is limited to only a few publications on the Arctic region [28,29].…”

Section: Introductionmentioning

confidence: 99%

Radium Isotopes and Hydrochemical Signatures of Surface Water-Groundwater Interaction in the Salt-Wedge Razdolnaya River Estuary (Sea of Japan) in the Ice-Covered Period

Semkin

Charkin

Pavlova

et al. 2023

Water

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The interaction of surface water and groundwater is important in the ecology of coastal basins, affecting hydrological conditions, oxygen regime, carbon, and nutrient exchange. This study demonstrates a dynamic connection between the salt-wedge region and its underlying aquifer in the eutrophic estuary. In winter, this estuary is covered with ice, and the river flow is at its lowest; that is why the specific response to groundwater discharge is best marked in this season. Groundwater admixture was detected in the salt-wedge region by highly active radium isotopes: 223Ra—4.80 ± 0.42 dpm 100 L−1, 224Ra—55.37 ± 1.1 dpm 100 L−1, and 228Ra—189.71 ± 4.66 dpm 100 L−1. The temperature of groundwater and river water was about +4 °C and 0 °C, respectively; that of seawater was −1.6 °C, and temperature increased up to +2.3 °C in the surface water–groundwater interaction region. Groundwater admixture is accompanied by a lower level of oxygen concentration of 52 μmol/kg; at that time, the maximum oxygen concentration in the salt-wedge region was 567 μmol/kg. In waters with a high activity of radium isotopes, there was a maximum partial pressure of CO2—4454 μatm at the range 100–150 μatm in the salt-wedge region and also observed extremum of NH4+, NO2−, and dissolved phosphorus. The surface water–groundwater interaction through anoxic sediment can form localized anaerobic areas despite the general oxygen supersaturation of eutrophic estuary waters and also cause local recycling of nutrients from bottom sediments.

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Section: Introductionmentioning

confidence: 99%

Radium Isotopes and Hydrochemical Signatures of Surface Water-Groundwater Interaction in the Salt-Wedge Razdolnaya River Estuary (Sea of Japan) in the Ice-Covered Period

Semkin

Charkin

Pavlova

et al. 2023

Water

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“…Groundwater discharge process traditionally known as SGD was de ned as the ow from the seabed to the coastal ocean (Moore 1999; Burnett et al 2006). In coastal basins, groundwater discharge has been studied in lagoon-estuaries (Young et al 2008; Wang and Du, 2016;Rodellas et al 2017;Tamborski et al 2019) and in wetlands (Carol et al 2022). But the study of this effect using radioisotopes in the icecovered basins is limited to only a few publications on the Arctic region (see Lecher 2017 for a review; Dabrowski et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Temperature and Oxygen Response to Groundwater Discharge in the Ice-Covered Razdolnaya River Estuary (Sea of Japan)

Semkin

Tishchenko

Charkin

et al. 2022

Preprint

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The study demonstrates a dynamic connection between the saltwater wedge region and its underlying aquifer. In winter, this estuary is covered with ice and the river flow is at its lowest; that is why its hydrological and oxygen-specific response to groundwater discharge is best marked in this season. Groundwater discharge was detected in the saltwater wedge region by highly active radium isotopes: 224Ra — 66.32 ± 0.60 dpm 100L−1, 223Ra — 2.85 ± 0.17 dpm 100L−1, 228Ra — 159.15 ± 0.13 dpm 100L− 1. The temperature of ground and river waters was +4.3 °С and +0.09 °С, respectively, that of sea water −1.2 °С, and the near-bottom layer temperature increased up to +1.2 °С in the water discharge region. According to the data provided by an anchored autonomous station installed in the area of saltwater discharge influence during the freeze-up period, the temperature reaches 2.5 °С in the saltwater wedge. Groundwater discharge is accompanied by a lower level of oxygen saturation – 67%, at that time oxygen saturation in sea water was 151%. Thus, we present evidence documenting the natural process that may result in a lower level of oxygen saturation in an estuary irrespective of man-induced effects, supply of nutrients and further intensification of production-destruction processes.

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Modelling hydrological strength and alteration in moribund deltaic India

Paul¹,

Pal

2022

Journal of Environmental Management

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Origin and dynamics of surface water - groundwater flows that sustain the Matusagaratí Wetland, Panamá

Cited by 5 publications

References 53 publications

Radium Isotopes and Hydrochemical Signatures of Surface Water-Groundwater Interaction in the Salt-Wedge Razdolnaya River Estuary (Sea of Japan) in the Ice-Covered Period

Radium Isotopes and Hydrochemical Signatures of Surface Water-Groundwater Interaction in the Salt-Wedge Razdolnaya River Estuary (Sea of Japan) in the Ice-Covered Period

Temperature and Oxygen Response to Groundwater Discharge in the Ice-Covered Razdolnaya River Estuary (Sea of Japan)

Modelling hydrological strength and alteration in moribund deltaic India

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