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2011 | OriginalPaper | Chapter

4. Profile (Two-Dimensional in Vertical Cross-Section) Models for Solute Transport in Regional Flow Systems

Author : Vyacheslav G. Rumynin

Published in: Subsurface Solute Transport Models and Case Histories

Publisher: Springer Netherlands

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Abstract

Vertical concentration gradients in natural systems can be rather large, often created by contaminant release near the water table as occurs in case of non-point contamination sources formed under the areal recharge conditions. Therefore the regional horizontal flow models discussed in the previous chapter have some serious limitations: neglecting the real redistribution of pollutants over the aquifer depth, such models allow one to calculate only vertically averaged concentration profiles. For example, such formulation of the problem is too coarse when migration processes are studied on the basis of hydrogeological monitoring data from wells penetrating thick (tens of meters) water-bearing strata. The propagation velocities of concentration fronts in individual profile zones can also differ from the averaged estimates. The prerequisites for the formation of contrast hydrogeochemical zonality are (a) the infiltration character of phreatic-water pollution and (b) the nonuniform distribution of rock permeability.

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Metadata
Title
Profile (Two-Dimensional in Vertical Cross-Section) Models for Solute Transport in Regional Flow Systems
Author
Vyacheslav G. Rumynin
Copyright Year
2011
Publisher
Springer Netherlands
DOI
https://doi.org/10.1007/978-94-007-1306-2_4