Analyse statistique des hydrogrammes de decrues des sources karstiques statistical analysis of hydrographs of karstic springs

Drogue, C.

doi:10.1016/0022-1694(72)90075-3

Cited by 62 publications

(23 citation statements)

References 3 publications

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“…The b-coefficient is obtained by fitting a single model for all the daily recessions during the ablation period. This model has already been applied in studies of karstic recession curves during the spring (Drogue, 1972). We applied this method to data from the Baounet Glacier (French Alps) recorded during the 2002/2003 and 2003/2004 melt seasons. In order to describe the evolution of the drainage network during the main melt season phases, we compared the b-coefficient with the variations in the daily discharge amplitude and the daily time lag between air temperature and proglacial discharge.…”

Section: Introductionmentioning

confidence: 99%

Evolution of glacial flow and drainage during the ablation season

Jobard

Dzikowski

2006

Journal of Hydrology

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Section: Introductionmentioning

confidence: 99%

Evolution of glacial flow and drainage during the ablation season

Jobard

Dzikowski

2006

Journal of Hydrology

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“…Although the global response of karst aquifers has been analyzed by several authors (Maillet, 1905;Forkasiewicz and Paloc, 1967;Drogue, 1972;Mangin, 1975), the interpretation of this information has hitherto been mainly qualitative, and it has scarcely been used as a means of determining appropriate input data necessary for distributive modelling.…”

Section: Introductionmentioning

confidence: 99%

A quantitative method for the characterisation of karst aquifers based on spring hydrograph analysis

Kovács

Perrochet

Király

et al. 2005

Journal of Hydrology

160

141

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This paper presents a method for characterizing flow systems in karst aquifers by acquiring quantitative information about the geometric and hydraulic aquifer parameters from spring hydrograph analysis. Numerical sensitivity analyses identified two fundamentally different flow domains, depending on the overall configuration of aquifer parameters. These two domains have been quantitatively characterized by deducing analytical solutions for the global hydraulic response of simple two-dimensional model geometries.During the baseflow recession of mature karst systems, the hydraulic parameters of karst conduits do not influence the drainage of the low-permeability matrix. In this case the drainage process is influenced by the size and hydraulic parameters of the low-permeability blocks alone. This flow condition has been defined as matrix-restrained flow regime (MRFR). During the baseflow recession of early karst systems and fissured systems, as well as the flood recession of mature systems, the recession process depends on the hydraulic parameters and the size of the low-permeability blocks, conduit conductivity and the total extent of the aquifer. This flow condition has been defined as conduit-influenced flow regime (CIFR).Analytical formulae demonstrated the limitations of equivalent models. While equivalent discrete-continuum models of early karst systems may reflect their real hydraulic response, there is only one adequate parameter configuration for mature systems that yields appropriate recession coefficient. Consequently, equivalent discrete-continuum models are inadequate for simulating global response of mature karst systems. The recession coefficient of equivalent porous medium models corresponds to the transition between matrix-restrained and conduit-influenced flow. Consequently, equivalent porous medium models yield corrupted hydrographs both in mature and early systems, and this approach is basically inadequate for modelling global response of karst aquifers.

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“…Alternatively, they assume an exponential baseflow recession, and characterize steep recession segments by a different function (Mangin, 1975), or attempt to describe the entire recession process by one mathematical formula (Drogue, 1972).…”

Section: Introductionmentioning

confidence: 99%

A quantitative approach to spring hydrograph decomposition

Kovács¹,

Perrochet

2008

Journal of Hydrology

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Summary A combined analytical-numerical study for the characterization of spring hydrographs is presented. Two-dimensional analytical solutions for diffusive flux from rectangular blocks of arbitrary shape facilitate a quantitative characterization of exponential hydrograph components. Together with analytical solutions for block discharge, a systematic analysis of numerically simulated spring hydrographs of synthetic karst systems provides an insight into karst hydrodynamics.Different hydrograph components do not represent different classes of rock permeability. Hydrographs of individual homogeneous blocks can be decomposed into several exponential components. Discharge hydrographs of symmetric rectangular blocks can be reconstructed by the sum of only three exponential components. Increasing block asymmetry results in an increasing number of exponential components contributing significantly to total discharge.Spring hydrographs represent a sum of individual block discharges originating from diffuse infiltration and conduit discharge originating from concentrated recharge. Beyond the inflection of the recession limb, a spring hydrograph can be decomposed in a similar manner to that of individual homogeneous blocks. The presented hydrograph analytical method facilitates the estimation of hydraulic and geometric parameters of karst hydrogeological systems.

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Analyse statistique des hydrogrammes de decrues des sources karstiques statistical analysis of hydrographs of karstic springs

Cited by 62 publications

References 3 publications

Evolution of glacial flow and drainage during the ablation season

Evolution of glacial flow and drainage during the ablation season

A quantitative method for the characterisation of karst aquifers based on spring hydrograph analysis

A quantitative approach to spring hydrograph decomposition

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