Journal ArticleDOI
A two-region nonequilibrium model for solute transport in solution conduits in karstic aquifers
Malcolm S. Field,Paul F Pinsky +1 more
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In this paper, a two-region nonequilibrium model was used to calibrate initial solute-transport parameter estimates generated from tracer-breakthrough curves (TBCs) developed by tracer tests conducted in uni-axial solution conduits in karstic aquifers.About:
This article is published in Journal of Contaminant Hydrology.The article was published on 2000-08-01. It has received 133 citations till now.read more
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Karst water resources in a changing world: Review of hydrological modeling approaches
TL;DR: The impact of climate change on karst aquifers has been studied in this article, where the authors explore different conceptual models and how they can be translated into numerical models of varying complexity and therefore varying data requirements.
Journal ArticleDOI
Tracer tests in karst hydrogeology and speleology
TL;DR: Water tracing techniques can be used in all types of hydrological and hydrogeological environments to obtain information about water movement and contaminant transport (Kass, 1998) and are still most widely used in karst aquifers, where groundwater trajectories are not immediately apparent.
Journal ArticleDOI
Review: Groundwater flow and transport modeling of karst aquifers, with particular reference to the North Coast Limestone aquifer system of Puerto Rico
Reza Ghasemizadeh,Ferdinand Hellweger,Christoph Butscher,Ingrid Y. Padilla,Dorothy J. Vesper,Malcolm S. Field,Akram N. Alshawabkeh +6 more
TL;DR: The North Coast Limestone aquifer system of Puerto Rico is introduced as a case study to illustrate and discuss the application of groundwater models in karst aquifer systems to evaluate aquifer contamination.
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Solute and colloid transport in karst conduits under low- and high-flow conditions.
TL;DR: The results show that colloids travel at higher velocities than solutes during low flow; colloids and solutes travel at similar velocITIES during high flow; and the 2RNE achieves a better fit, while the ADM is more robust, as it requires less parameters.
Journal ArticleDOI
Multitracer Test Approach to Characterize Reactive Transport in Karst Aquifers
TL;DR: Sensitivity analyses reveal that model results for the conservative tracer transport are most sensitive to average velocity and volume fraction of the mobile fluid region, while dispersion and mass transfer coefficients are least influential.
References
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Dispersion of soluble matter in solvent flowing slowly through a tube
TL;DR: In this paper, it was shown analytically that the distribution of concentration produced in this way is centred on a point which moves with the mean speed of flow and is symmetrical about it in spite of the asymmetry of the flow.
Book
Karst Geomorphology and Hydrology
Derek C. Ford,Paul W. Williams +1 more
TL;DR: In this paper, the influence of climate, climatic change and other environmental factors on karst development is discussed. And the authors present a detailed analysis of the chemical and kinetic behavior of the kars.
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Mass transfer studies in sorbing porous media. I. Analytical solutions
TL;DR: An analytical solution for the movement of chemicals through a sorbing porous medium with lateral or intra-aggregate diffusion is presented in this paper, where the liquid phase in the porous medium is divided into mobile and immobile regions.
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The Dispersion of Matter in Turbulent Flow through a Pipe
TL;DR: In this paper, the dispersion of soluble matter introduced into a slow stream of solvent in a capillary tube can be described by means of a virtual coefficient of diffusion (Taylor 1953a), which represents the combined action of variation of velocity over the cross-section of the tube and molecluar diffusion in a radial direction.
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Numerical methods and software
TL;DR: In this paper, the authors propose a linear least-squares data fitting algorithm for computing nonlinear systems of equations, which is based on the linear systems of Equations (LSE) algorithm.