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A fractional dispersion model for overland solute transport

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dc.creator Deng, Zhi-Qiang
dc.creator de Lima, M. Isabel P.
dc.creator Singh, Vijay P.
dc.creator de Lima, Jo?�o L. M. P.
dc.date.accessioned 2011-03-30T15:08:42Z
dc.date.available 2011-03-30T15:08:42Z
dc.date.issued 2006-03-18
dc.identifier.citation Deng, Z.-Q., J. L. M. P. de Lima, M. I. P. de Lima, and V. P. Singh (2006), A fractional dispersion model for overland solute transport, Water Resources Research, 42, doi:10.1029/2005WR004146. To view the published open abstract, go to http://dx.doi.org and enter the DOI. en_US
dc.identifier.issn 0043-1397
dc.identifier.uri http://dx.doi.org/10.1029/2005WR004146
dc.identifier.uri http://hdl.handle.net/1969.1/94156
dc.description An edited version of this paper was published by AGU. Copyright 2006 American Geophysical Union. en_US
dc.description.abstract Using the kinematic-wave overland flow equation and a fractional dispersion-advection equation, a process-oriented, physically-based model is developed for overland solute transport. Two scenarios, one consisting of downslope and the other of upslope rainstorm movements, are considered for numerical computations. Under these conditions, the hydrograph displays a long-tailed distribution due to the variation in flow velocity in both time and distance. The solute transport exhibits a complex behavior. Pollutographs are characterized by a steep rising limb, with a peak, and a long, stretched receding limb; whereas the solute concentration distributions feature a rapid receding limb followed by a long stretched rising limb. Downslope moving storms cause much higher peak in both hydrographs and pollutographs than do upslope moving storms. Both hydrographs and the pollutographs predicted by the fractional dispersion model are in good agreement with the data measured experimentally using a soil flume and a moving rainfall simulator. en_US
dc.language.iso en en_US
dc.publisher American Geophysical Union en_US
dc.subject decaying source en_US
dc.subject fractional dispersion en_US
dc.subject moving rainstorm en_US
dc.subject overland flow en_US
dc.subject solute transport en_US
dc.title A fractional dispersion model for overland solute transport en_US
dc.type Article en_US
local.department Civil Engineering en_US
local.department Biological and Agricultural Engineering en_US


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