Journal
WATER RESOURCES RESEARCH
Volume 36, Issue 6, Pages 1403-1412Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2000WR900031
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A transport: equation that: uses fractional-order dispersion derivatives has fundamental solutions that are Levy's ct-stable densities. These densities represent plumes that spread proportional to time(1/alpha), have heavy tails, and incorporate any degree of skewness. The equation is parsimonious since the dispersion parameter is not a function of time or distance. The scaling behavior of plumes that undergo Levy motion is accounted for by the fractional derivative. A laboratory tracer test is described by a dispersion term of order 1.55, while the Cape Cod bromide plume is modeled by an equation of order 1.65 to 1.8.
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