Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging
Seven Landsat thermal infrared (TIR) images taken over the period 2000–2010 were used to establish longitudinal temperature profiles of the middle Loire River where it flows above the Beauce aquifer. The groundwater discharge along the river course was quantified for each identified groundwater catc...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-11-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/19/4479/2015/hess-19-4479-2015.pdf |
| _version_ | 1811305242512326656 |
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| author | E. Lalot F. Curie V. Wawrzyniak F. Baratelli S. Schomburgk N. Flipo H. Piegay F. Moatar |
| author_facet | E. Lalot F. Curie V. Wawrzyniak F. Baratelli S. Schomburgk N. Flipo H. Piegay F. Moatar |
| author_sort | E. Lalot |
| collection | DOAJ |
| description | Seven Landsat thermal infrared (TIR) images taken over the period 2000–2010
were used to establish longitudinal temperature profiles of the middle Loire
River where it flows above the Beauce aquifer. The groundwater discharge
along the river course was quantified for each identified groundwater
catchment area using a heat budget based on temperature variations of the
Loire River estimated from the TIR images. The results showed that 75 %
of the temperature differences, between in situ observations and TIR
image-based estimations, remained within the ±1 °C interval. The
main discharge area of the Beauce aquifer into the Loire River was located
between river kilometers 630 and 650, where there was a temperature drop of
1–1.5 °C in the summer and a rise of 0.5 °C in winter.
According to the heat budgets, groundwater discharge was higher during the
winter period (13.5 m<sup>3</sup> s<sup>−1</sup>) than during the summer period
(5.3 m<sup>3</sup> s<sup>−1</sup>). These findings are in line with the results of
both a groundwater budget and a process-based distributed hydrogeological
model. Groundwater input was also found to be higher during the Loire's flow
recession periods. |
| first_indexed | 2024-04-13T08:22:59Z |
| format | Article |
| id | doaj.art-f6c3dcdc7c904def85dfd1233f03301b |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-04-13T08:22:59Z |
| publishDate | 2015-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-f6c3dcdc7c904def85dfd1233f03301b2022-12-22T02:54:36ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382015-11-0119114479449210.5194/hess-19-4479-2015Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imagingE. Lalot0F. Curie1V. Wawrzyniak2F. Baratelli3S. Schomburgk4N. Flipo5H. Piegay6F. Moatar7Laboratoire GEHCO, UFR sciences et techniques, Université François Rabelais, Tours, FranceLaboratoire GEHCO, UFR sciences et techniques, Université François Rabelais, Tours, FrancePlateforme ISIG, CNRS – UMR 5600 EVS, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, FranceCentre de Géosciences – Systèmes hydrologiques et Réservoirs, Mines ParisTech, Fontainebleau, FranceDir. Eau Environnement et Ecotechnologies, Bureau de Recherches Géologiques et Minières (BRGM), Orléans, FranceCentre de Géosciences – Systèmes hydrologiques et Réservoirs, Mines ParisTech, Fontainebleau, FrancePlateforme ISIG, CNRS – UMR 5600 EVS, Ecole Normale Supérieure de Lyon, Université de Lyon, Lyon, FranceLaboratoire GEHCO, UFR sciences et techniques, Université François Rabelais, Tours, FranceSeven Landsat thermal infrared (TIR) images taken over the period 2000–2010 were used to establish longitudinal temperature profiles of the middle Loire River where it flows above the Beauce aquifer. The groundwater discharge along the river course was quantified for each identified groundwater catchment area using a heat budget based on temperature variations of the Loire River estimated from the TIR images. The results showed that 75 % of the temperature differences, between in situ observations and TIR image-based estimations, remained within the ±1 °C interval. The main discharge area of the Beauce aquifer into the Loire River was located between river kilometers 630 and 650, where there was a temperature drop of 1–1.5 °C in the summer and a rise of 0.5 °C in winter. According to the heat budgets, groundwater discharge was higher during the winter period (13.5 m<sup>3</sup> s<sup>−1</sup>) than during the summer period (5.3 m<sup>3</sup> s<sup>−1</sup>). These findings are in line with the results of both a groundwater budget and a process-based distributed hydrogeological model. Groundwater input was also found to be higher during the Loire's flow recession periods.http://www.hydrol-earth-syst-sci.net/19/4479/2015/hess-19-4479-2015.pdf |
| spellingShingle | E. Lalot F. Curie V. Wawrzyniak F. Baratelli S. Schomburgk N. Flipo H. Piegay F. Moatar Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging Hydrology and Earth System Sciences |
| title | Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging |
| title_full | Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging |
| title_fullStr | Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging |
| title_full_unstemmed | Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging |
| title_short | Quantification of the contribution of the Beauce groundwater aquifer to the discharge of the Loire River using thermal infrared satellite imaging |
| title_sort | quantification of the contribution of the beauce groundwater aquifer to the discharge of the loire river using thermal infrared satellite imaging |
| url | http://www.hydrol-earth-syst-sci.net/19/4479/2015/hess-19-4479-2015.pdf |
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