Articles | Volume 26, issue 18
https://doi.org/10.5194/hess-26-4619-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-4619-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Extreme precipitation events induce high fluxes of groundwater and associated nutrients to coastal ocean
Institut de Ciència i Tecnologia Ambientals, UAB, Bellaterra, 08193, Spain
Valentí Rodellas
CORRESPONDING AUTHOR
Institut de Ciència i Tecnologia Ambientals, UAB, Bellaterra, 08193, Spain
Aaron Alorda-Kleinglass
Institut de Ciència i Tecnologia Ambientals, UAB, Bellaterra, 08193, Spain
Maarten Saaltink
Department of Civil and Environmental Engineering, UPC, Barcelona, 08034, Spain
Hydrogeology Group, UPC-CSIC, Barcelona, 08034, Spain
Albert Folch
Department of Civil and Environmental Engineering, UPC, Barcelona, 08034, Spain
Hydrogeology Group, UPC-CSIC, Barcelona, 08034, Spain
Jordi Garcia-Orellana
Institut de Ciència i Tecnologia Ambientals, UAB, Bellaterra, 08193, Spain
Departament de Física, UAB, Bellaterra, 08193, Spain
deceased, 5 July 2022
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During geological carbon sequestration, the injected supercritical CO2, being less dense, floats above the brine. The dissolution of CO2 into brine helps mitigate the risk of CO2 leakage. As CO2 dissolves into the brine, it increases the density of brine in the upper layer, initiating gravity-driven convection (GDC), which significantly enhances the rate of CO2 dissolution. We derived two empirical formulas to predict the asymptotic dissolution rate driven by GDC in heterogeneous fields.
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Hydrol. Earth Syst. Sci., 25, 4789–4805, https://doi.org/10.5194/hess-25-4789-2021, https://doi.org/10.5194/hess-25-4789-2021, 2021
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Satellite thermal infrared (TIR) remote sensing is a useful method for identifying coastal springs in karst aquifers both locally and regionally. The limiting factors include technical limitations, geological and hydrogeological characteristics, environmental and marine conditions, and coastal geomorphology. Also, it can serve as a tool to use for a first screening of the coastal water surface temperature to identify possible thermal anomalies that will help narrow the sampling survey.
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Our study of the chronological sequence of Monte Perdido Glacier in the Central Pyrenees (Spain) reveals that, although the intense warming associated with the Roman period or Medieval Climate Anomaly produced important ice mass losses, it was insufficient to make this glacier disappear. By contrast, recent global warming has melted away almost 600 years of ice accumulated since the Little Ice Age, jeopardising the survival of this and other southern European glaciers over the next few decades.
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Short summary
Rainwater infiltrates aquifers and travels a long subsurface journey towards the ocean where it eventually enters below sea level. In its path towards the sea, water becomes enriched in many compounds that are naturally or artificially present within soils and sediments. We demonstrate that extreme rainfall events may significantly increase the inflow of water to the ocean, thereby increasing the supply of these compounds that are fundamental for the sustainability of coastal ecosystems.
Rainwater infiltrates aquifers and travels a long subsurface journey towards the ocean where it...