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Issue Hydroécol. Appl.
Volume 16, 2008
Température des eaux continentales, hydroécologie et changement climatique
Page(s) 191 - 213
DOI 10.1051/hydro/2009002
Published online 04 March 2009

Hydroécol. Appl. (2008) Tome 16, pp. 191-213
DOI: 10.1051/hydro/2009002

1977-2006 : Trente années de mesures des températures de l'eau dans le Bassin du Rhône

A. Poirel, F. Lauters and B. Desaint

EDF/DTG, 21 av. de l'Europe, BP41, 38040 Grenoble Cedex, France


Publié en ligne le 4 mars 2009

Abstract - 1977-2006 : Thirty years of water temperature measurements in the Rhône Basin. Water temperature of the Rhone and its tributaries is measured hourly since 1977 on about fifteen stations. The installation and maintenance of these stations to get reliable data required a constant effort in metrology and data validation over thirty years. The analysis of these time series data characterizes the thermal regime of the Rhone and highlight significant increases in water temperature (+1 to +2 °C on annual means). These increases are higher downstream on the Rhone and some warmer tributaries. The effect is more pronounced in spring and summer, except on sites subject to a glacial or nival hydrological regime.


Résumé - La température de l'eau du Rhône et de ses affluents est mesurée au pas de temps horaire depuis 1977 sur une quinzaine de stations. La constitution de ces chroniques a nécessité un effort constant de métrologie, de validation et de critique sur plus de trente années pour obtenir des données fiables. L'analyse de ces données permet de définir le régime thermique du Rhône et de mettre en évidence d'importantes augmentations thermiques (de +1 à +2 °C. sur les moyennes annuelles). Ces augmentations sont plus élevées sur le Rhône aval et sur ses affluents chauds. L'effet est plus marqué au printemps et en été, excepté sur les stations soumises à un régime hydrologique nivo-glaciaire.


Key words: water temperature, time series, Rhône River

Mots clés : température de l'eau, série chronologique, Rhône


© EDF 2009


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