Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction
The Barthelasse alluvial aquifer is used to supply water to 180,000 inhabitants. The pumping field is located less than 200 m from the Rhône and is 100% fed by water from the Rhône, which makes it particularly vulnerable to any pollution from the Rhône. Between the Rhône and the pumping field is a G...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-09-01
|
| Series: | Water |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4441/13/19/2695 |
| _version_ | 1797515652950392832 |
|---|---|
| author | Angélique Poulain Vincent Marc Marina Gillon Anne-Laure Cognard-Plancq Roland Simler Milanka Babic Marc Leblanc |
| author_facet | Angélique Poulain Vincent Marc Marina Gillon Anne-Laure Cognard-Plancq Roland Simler Milanka Babic Marc Leblanc |
| author_sort | Angélique Poulain |
| collection | DOAJ |
| description | The Barthelasse alluvial aquifer is used to supply water to 180,000 inhabitants. The pumping field is located less than 200 m from the Rhône and is 100% fed by water from the Rhône, which makes it particularly vulnerable to any pollution from the Rhône. Between the Rhône and the pumping field is a Girardon unit, an arrangement that can be found regularly along the banks of the lower and middle reaches of the Rhône, and whose role is to stabilise the banks (alluvial deposits) and to facilitate river navigation. In order to know the transfer times between the Rhône and the pumping field, fortnightly monitoring was carried out over a hydrological year, as well as hourly monitoring during a flood in the winter of 2019. The Rhône shows a cyclicality in its isotopic signature with enrichment in heavy isotopes during the winter period, particularly during floods, and a depletion during the summer period. This variation is found well within the associated alluvial aquifer. The application of LPMs models showed that the average transfer time between the Rhône and the Girardon unit was 20 days and 50 days between the Rhône and the Barthelasse pumping. This study highlighted the importance of using several sampling frequencies to consider the diversity of hydrological situations. For the Rhône, event-based monitoring (flooding) proved to be relevant to account for isotopic variability throughout the year. This work also highlighted the impact of the disruption of hydraulic exchanges between the river and the water table caused by the presence of the Girardon unit in terms of the propagation of contaminants. |
| first_indexed | 2024-03-10T06:48:02Z |
| format | Article |
| id | doaj.art-406bc80b355f490980649f493d7a2291 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T06:48:02Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-406bc80b355f490980649f493d7a22912023-11-22T17:01:12ZengMDPI AGWater2073-44412021-09-011319269510.3390/w13192695Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer InteractionAngélique Poulain0Vincent Marc1Marina Gillon2Anne-Laure Cognard-Plancq3Roland Simler4Milanka Babic5Marc Leblanc6UMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceUMR EMMAH Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes, University of Avignon, 84000 Avignon, FranceThe Barthelasse alluvial aquifer is used to supply water to 180,000 inhabitants. The pumping field is located less than 200 m from the Rhône and is 100% fed by water from the Rhône, which makes it particularly vulnerable to any pollution from the Rhône. Between the Rhône and the pumping field is a Girardon unit, an arrangement that can be found regularly along the banks of the lower and middle reaches of the Rhône, and whose role is to stabilise the banks (alluvial deposits) and to facilitate river navigation. In order to know the transfer times between the Rhône and the pumping field, fortnightly monitoring was carried out over a hydrological year, as well as hourly monitoring during a flood in the winter of 2019. The Rhône shows a cyclicality in its isotopic signature with enrichment in heavy isotopes during the winter period, particularly during floods, and a depletion during the summer period. This variation is found well within the associated alluvial aquifer. The application of LPMs models showed that the average transfer time between the Rhône and the Girardon unit was 20 days and 50 days between the Rhône and the Barthelasse pumping. This study highlighted the importance of using several sampling frequencies to consider the diversity of hydrological situations. For the Rhône, event-based monitoring (flooding) proved to be relevant to account for isotopic variability throughout the year. This work also highlighted the impact of the disruption of hydraulic exchanges between the river and the water table caused by the presence of the Girardon unit in terms of the propagation of contaminants.https://www.mdpi.com/2073-4441/13/19/2695transit timestable isotopesgroundwater/surface-water relations |
| spellingShingle | Angélique Poulain Vincent Marc Marina Gillon Anne-Laure Cognard-Plancq Roland Simler Milanka Babic Marc Leblanc Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction Water transit time stable isotopes groundwater/surface-water relations |
| title | Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction |
| title_full | Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction |
| title_fullStr | Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction |
| title_full_unstemmed | Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction |
| title_short | Multi Frequency Isotopes Survey to Improve Transit Time Estimation in a Situation of River-Aquifer Interaction |
| title_sort | multi frequency isotopes survey to improve transit time estimation in a situation of river aquifer interaction |
| topic | transit time stable isotopes groundwater/surface-water relations |
| url | https://www.mdpi.com/2073-4441/13/19/2695 |
| work_keys_str_mv | AT angeliquepoulain multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT vincentmarc multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT marinagillon multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT annelaurecognardplancq multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT rolandsimler multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT milankababic multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction AT marcleblanc multifrequencyisotopessurveytoimprovetransittimeestimationinasituationofriveraquiferinteraction |