Extreme precipitation events induce high fluxes of groundwater and associated nutrients to coastal ocean
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| Název: | Extreme precipitation events induce high fluxes of groundwater and associated nutrients to coastal ocean |
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| Autoři: | M. Diego-Feliu, V. Rodellas, A. Alorda-Kleinglass, M. Saaltink, A. Folch, J. Garcia-Orellana |
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània |
| Zdroj: | Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Hydrology and Earth System Sciences, Vol 26, Pp 4619-4635 (2022) |
| Informace o vydavateli: | Copernicus GmbH, 2022. |
| Rok vydání: | 2022 |
| Témata: | Technology, 0207 environmental engineering, 02 engineering and technology, 15. Life on land, Environmental technology. Sanitary engineering, 01 natural sciences, 6. Clean water, Environmental sciences, Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània, 13. Climate action, Geography. Anthropology. Recreation, SDG 13 - Climate Action, GE1-350, 14. Life underwater, Groundwater, TD1-1066, Aigües subterrànies, 0105 earth and related environmental sciences |
| Popis: | Current studies of submarine groundwater discharge (SGD) are commonly conducted under aquifer baseflow conditions, neglecting the influence of episodic events that can significantly increase the supply of nutrients and water. This limits our understanding of the social, biogeochemical, and ecological impacts of SGD. In this study, we evaluated the influence of an extreme precipitation event (EPE) on the magnitude of SGD. To do so, three seawater sampling campaigns were performed at a Mediterranean ephemeral stream-dominated basin after an EPE (∼ 90 mm in few hours) and in baseflow conditions. Results indicate that the groundwater flows after the EPE were 1 order of magnitude higher than those in baseflow conditions. The SGD induced by EPEs, which only take place a few days per year, represented up to one third of the annual discharge of groundwater and associated nutrients at the study site. This work accentuates the need to account for episodic increases in the supply of water and nutrients when aiming to provide reliable annual SGD estimates, particularly in the current context of climate change, since the occurrence of such events is expected to increase worldwide. |
| Druh dokumentu: | Article Other literature type |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| ISSN: | 1607-7938 |
| DOI: | 10.5194/hess-26-4619-2022 |
| DOI: | 10.5194/hess-2021-594 |
| Přístupová URL adresa: | https://hess.copernicus.org/preprints/hess-2021-594/hess-2021-594.pdf https://hess.copernicus.org/articles/26/4619/2022/ https://doaj.org/article/a3d2d3ba6ffe4c0c969636c3415292bb https://ddd.uab.cat/record/269305 |
| Rights: | CC BY |
| Přístupové číslo: | edsair.doi.dedup.....ec5fc773f247e6afb22d1f29662262ff |
| Databáze: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | Current studies of submarine groundwater discharge (SGD) are commonly conducted under aquifer baseflow conditions, neglecting the influence of episodic events that can significantly increase the supply of nutrients and water. This limits our understanding of the social, biogeochemical, and ecological impacts of SGD. In this study, we evaluated the influence of an extreme precipitation event (EPE) on the magnitude of SGD. To do so, three seawater sampling campaigns were performed at a Mediterranean ephemeral stream-dominated basin after an EPE (∼ 90 mm in few hours) and in baseflow conditions. Results indicate that the groundwater flows after the EPE were 1 order of magnitude higher than those in baseflow conditions. The SGD induced by EPEs, which only take place a few days per year, represented up to one third of the annual discharge of groundwater and associated nutrients at the study site. This work accentuates the need to account for episodic increases in the supply of water and nutrients when aiming to provide reliable annual SGD estimates, particularly in the current context of climate change, since the occurrence of such events is expected to increase worldwide. |
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| ISSN: | 16077938 |
| DOI: | 10.5194/hess-26-4619-2022 |