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Travel-time based analysis of solute transport along hydrological pathways
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
2012 (English)In: SAO/NASA ADS Physics Abstract Service, 2012Conference paper (Refereed)
Abstract [en]

This paper presents how solute transport through a catchment can be analyzed based on mean flow and other flow-transport properties given or resolved by simulations. The method is based on computing water travel time along trajectories (pathways) of transport through the catchment and the flow-transport property distribution among them. Convolution of relevant property distributions across consecutive hydrological units, aggregated over the trajectories that originate from the solute-specific injection area, captures hydrological dispersion with its basic measure derived as the travel time coefficient of variation. Various memory functions can be introduced in a relatively simple manner for incorporating retention/mass transfer mechanisms under conditions of statistical stationarity. The paper further discusses how spatial and temporal flow variability can be accounted for in this general theory, and how each and both of these variability components influence hydrological transport in catchments. Finally, the paper outlines how the theory can be used in a scenario analysis approach to quantify and map the effects of uncertainty in physical and biogeochemical characteristics on diffuse hydrological transport and its uncertainty

Place, publisher, year, edition, pages
National Category
Earth and Related Environmental Sciences Oceanography, Hydrology, Water Resources
URN: urn:nbn:se:su:diva-86548OAI: diva2:587288
American Geophysical Union Fall Meeting 2012, San Francisco, USA, 3-7 December, 2012.

Abstract: H24B-07, Invited.

Available from: 2013-01-14 Created: 2013-01-14 Last updated: 2014-11-04Bibliographically approved

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