Spatial and seasonal fluctuations in fresh submarine groundwater discharge revealed by marine continuous resistivity profiling
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| Název: | Spatial and seasonal fluctuations in fresh submarine groundwater discharge revealed by marine continuous resistivity profiling |
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| Autoři: | Tur Piedra, Jose, Ledo, Juan Jose, Diego Feliu, Marc, Queralt Capdevila, Pilar, Marcuello Pascual, Alex, Rodellas, Valentí, Folch Sancho, Albert |
| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Enginyeria Ambiental, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. GHS - Grup d'Hidrologia Subterrània |
| Zdroj: | Sci Rep UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024) |
| Informace o vydavateli: | Springer Science and Business Media LLC, 2024. |
| Rok vydání: | 2024 |
| Témata: | Coastal groundwater, Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Hidrologia subterrània, SGD, Science, Mediterranean sea, Medicine, Marine geophysics, Seasonality, Electrical resistivity tomography, Article |
| Popis: | Submarine Groundwater Discharge (SGD) is a major pathway for the discharge of fresh and saline groundwater and associated dissolved compounds into marine environments. However, assessing SGD processes in coastal aquifers is challenging due to inaccessibility, dynamic conditions, complex subsurface geology, and the need for long-term monitoring to capture temporal and spatial variations in SGD rates accurately. This study employs marine continuous resistivity profiling (MCRP) as a main method to assess the presence of freshwater or brackish SGD offshore and to examine its potential seasonal variations. The method has been applied in the coastal alluvial aquifer of Maresme (Spain) and validated with other methods to trace SGD, including salinity profiles, Ra isotopes, and piezometric levels. Several MCRP transects of 700 m long, perpendicular to the coastline, were performed in a coastal marine area to obtain electrical resistivity data of the seabed covering an area of 3 km2. The data was acquired in two field campaigns with contrasting hydrological conditions (dry and wet seasons). The MCRP results allow the identification of areas of fresh SGD in marine sediments, with a clear seasonal variability that indicates a higher discharge of fresh groundwater in the wet season. |
| Druh dokumentu: | Article Other literature type |
| Popis souboru: | application/pdf |
| Jazyk: | English |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-024-75984-z |
| Přístupová URL adresa: | https://pubmed.ncbi.nlm.nih.gov/39438573 https://doaj.org/article/fafa90b6a52445b38d981d628d76ff2e https://ddd.uab.cat/record/319959 |
| Rights: | CC BY NC ND |
| Přístupové číslo: | edsair.doi.dedup.....1a89dff214c3f06ff12064e66ea2ad6a |
| Databáze: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | Submarine Groundwater Discharge (SGD) is a major pathway for the discharge of fresh and saline groundwater and associated dissolved compounds into marine environments. However, assessing SGD processes in coastal aquifers is challenging due to inaccessibility, dynamic conditions, complex subsurface geology, and the need for long-term monitoring to capture temporal and spatial variations in SGD rates accurately. This study employs marine continuous resistivity profiling (MCRP) as a main method to assess the presence of freshwater or brackish SGD offshore and to examine its potential seasonal variations. The method has been applied in the coastal alluvial aquifer of Maresme (Spain) and validated with other methods to trace SGD, including salinity profiles, Ra isotopes, and piezometric levels. Several MCRP transects of 700 m long, perpendicular to the coastline, were performed in a coastal marine area to obtain electrical resistivity data of the seabed covering an area of 3 km2. The data was acquired in two field campaigns with contrasting hydrological conditions (dry and wet seasons). The MCRP results allow the identification of areas of fresh SGD in marine sediments, with a clear seasonal variability that indicates a higher discharge of fresh groundwater in the wet season. |
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| ISSN: | 20452322 |
| DOI: | 10.1038/s41598-024-75984-z |