Analyse multirésolution croisée de pluies et débits de sources karstiquesMultiresolution cross-analysis of rainfall rates and karstic spring runoffs |
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| Authors: | David Labat Rachid Ababou Alain Mangin |
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| Affiliation: | 1. Laboratoire de mécanisme des transferts en géologie, UMR 5563 CNRS, 38, rue des Trente-Six-Ponts, 31400 Toulouse, France;2. Institut de mécanique des fluides de Toulouse, UMR 5502 CNRS, allée du Professeur-Camille-Soula, 31400 Toulouse, France;3. Laboratoire souterrain de Moulis, 09200 Saint-Girons (Moulis), France |
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| Abstract: | In order to quantify the quality of the rainfall/discharge relationship across time-scales, we propose the use of both orthogonal wavelet multiresolution analysis and cross-correlation analysis. By using the two techniques together, it is possible to show, scale-by-scale, the influence of the input to the system (rainfall) on the response (discharge) of the aquifer and also to relate these results to the internal structure of the aquifer and to the degree of organisation of the karst drainage. An application of this method to three Pyrenean karsts is also shown. To cite this article: D. Labat et al., C. R. Geoscience 334 (2002) 551–556. |
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| Keywords: | karstic systems rainfall discharge multiresolution wavelet cross-correlation analyses systèmes karstiques pluies débits analyse en ondelette multirésolution analyse corrélatoire croisée |
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