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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1111/j.1745-6584.2008.00517.x
|2 doi
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|a eng
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|a Dörfliger, N
|e verfasserin
|4 aut
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|a Inverse modeling approach to allogenic karst system characterization
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 27.07.2009
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|a Date Revised 20.05.2009
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Allogenic karst systems function in a particular way that is influenced by the type of water infiltrating through river water losses, by karstification processes, and by water quality. Management of this system requires a good knowledge of its structure and functioning, for which a new methodology based on an inverse modeling approach appears to be well suited. This approach requires both spring and river inflow discharge measurements and a continuous record of chemical parameters in the river and at the spring. The inverse model calculates unit hydrographs and the impulse responses of fluxes from rainfall hydraulic head at the spring or rainfall flux data, the purpose of which is hydrograph separation. Hydrograph reconstruction is done using rainfall and river inflow data as model input and enables definition at each time step of the ratio of each component. Using chemical data, representing event and pre-event water, as input, it is possible to determine the origin of spring water (either fast flow through the epikarstic zone or slow flow through the saturated zone). This study made it possible to improve a conceptual model of allogenic karst system functioning. The methodology is used to study the Bas-Agly and the Cent Font karst systems, two allogenic karst systems in Southern France
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|a Journal Article
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1 |
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|a Fleury, P
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|a Ladouche, B
|e verfasserin
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|g 47(2009), 3 vom: 01. Mai, Seite 414-26
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