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Archive Ouverte HAL-IRD |  |
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Archive Ouverte HAL-IRD | |
| HAL : hal-00330843, version 1 |
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| Hydrology and Earth System Sciences Discussions 7, 1 (2003) 33-42 |
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| Characterising and modelling groundwater discharge in anagricultural wetland on the French Atlantic coast |
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| P. Weng 1F. Giraud 1 |
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| (2003) |
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| Interaction between a wetland and its surrounding aquifer was studied in the Rochefort agricultural marsh (150 km2). Groundwater discharge in the marsh was measured with a network of nested piezometers. Hydrological modelling of the wetland showed that a water volume of 770,000 m3 yr–1 is discharging into the marsh, but that this water flux essentially takes place along the lateral borders of the wetland. However, this natural discharge volume represents only 20% of the artificial freshwater injected each year into the wetland to maintain the water level close to the soil surface. Understanding and quantifying the groundwater component in wetland hydrology is crucial for wetland management and conservation. Keywords: wetland, hydrology, groundwater, modelling, marsh |
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| 1 : | Institut languedocien de recherche sur l'eau et l'environnement (ILREE) |
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CNRS : IFR123 – Institut national de la recherche agronomique (INRA) – Bureau de Recherches Géologiques et Minières (BRGM) – Institut de recherche pour le développement [IRD] – Université Montpellier I – Université Montpellier II - Sciences et techniques – Ecole Nationale Supérieure des Mines d'Alès – Ecole Nationale du Génie Rural des Eaux et Forêts |
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| 2 : | INRA-SAD |
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Institut national de la recherche agronomique (INRA) |
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| Domaine | : | Planète et Univers/Interfaces continentales, environnement Planète et Univers/Océan, Atmosphère Planète et Univers/Sciences de la Terre |
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| hal-00330843, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00330843 | |
| oai:hal.archives-ouvertes.fr:hal-00330843 | |
| Contributeur : Publication EGU | |
| Soumis le : Mercredi 1 Janvier 2003, 08:00:00 | |
| Dernière modification le : Mercredi 15 Octobre 2008, 12:27:00 | |
