A deterministic approach to the coupled analysis of karst springs' hydrographs and chemographs

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Title:
A deterministic approach to the coupled analysis of karst springs' hydrographs and chemographs
Series Title:
Journal of Hydrology
Creator:
Alessandro Grasso, D.
Jeannin, Pierre-Yves
Zwahlen, François
Language:
English

Subjects

Subjects / Keywords:
Karst Springs ( local )
Hydrochemistry ( local )
Modelling ( local )
Karst Hydrology ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
During the chemically based recession flow phase of karstic springs the carbonate (dissolved limestone) concentration can be expressed as negative power of the flow rate. The empirically determined Conc/Q relationship allows two parameters (α and A) to be defined, of which one (α) depends on the geometric dimensions of the saturated (submerged) karstic network. In this paper we present a deterministic model which simulates the concentration of carbonate at the outlet of a network of circular rectilinear conduits as a function of flow rate. This model, based on hydraulic principles and the calcite dissolution kinetics, allows the sensitivity of the α and A parameters to be studied under different chemical, physical and geometric scenarios. Simulation results show that A is a function of the calcite saturation concentration, whereas α depends on the spatial dimensions of the karstic network (void length and aperture). The deterministic model results were applied to real karstic systems to evaluate the geometric dimensions of submerged karstic networks.
Original Version:
Journal of Hydrology, Vol. 271, no. 4-Jan.

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Source Institution:
University of South Florida Library
Holding Location:
University of South Florida
Rights Management:
This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

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University of South Florida
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