Naslov
Comment on “Stochastic Analysis of the Transport of Kinetically Sorbing Solutes in Aquifers with Randomly Heterogeneous Hydraulic Conductivity” by H. A. M. Quinodoz and A. J. Valocchi

Autori
Andričević, Roko

Izvornik
Water resources research (0043-1397) 31 (1995), 1; 237-243

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, komentar, znanstveni

Ključne riječi
porous formations ; dispersion ; moments

Sažetak
In this comment the alternative probabilistic model for spatial moments of kinetically sorbing solutes was presented. The main advantage of the presented model is the full closed-form solution for general initial conditions which can be extended even for moments higher than second.The only disadvantage is in the accuracy of the first-order approximation in the residence time distribution for very early times. The comparison with the spatial moments obtained by Quinodoz and Valocchi (1993) for the point source case showed consistency in most parts of the transport timescale. The actual limitation of both theories was discussed from the point that they followed a single-particle discplacement concept. It was shown that to compare the stochastic theory, based on a single-particle displacement approach, with field data, either the ergodicity requirement has to be satisfied (very difficult to achive for the kinetically sorbing solutes) or one has to remove the inherent uncertainty in the mean centroid displacement.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Građevinarstvo, Temeljne tehničke znanosti

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