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| Titel |
Flow modelling to estimate suspended sediment travel times for two Canadian Deltas |
| VerfasserIn |
S. R. Fassnacht |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 4, no. 3 ; Nr. 4, no. 3, S.425-438 |
| Datensatznummer |
250001750
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| Publikation (Nr.) |
 copernicus.org/hess-4-425-2000.pdf |
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| Zusammenfassung |
| The
approximate travel times for suspended sediment transport through two
multi-channel networks are estimated using flow modelling. The focus is on the
movement of high sediment concentrations that travel rapidly downstream. Since
suspended sediment transport through river confluences and bifurcation movement
is poorly understood, it is assumed that the sediment moves at approximately the
average channel velocity during periods of high sediment load movement.
Calibration of the flow model is discussed, with an emphasis on the
incorporation of cross-section data, that are not referenced to a datum, using a
continuous water surface profile. Various flow regimes are examined for the
Mackenzie and the Slave River Deltas in the Northwest Territories, Canada, and a
significant variation in travel times is illustrated. One set of continuous
daily sediment measurements throughout the Mackenzie Delta is used to
demonstrate that the travel time estimates are reasonable.
Keywords: suspended sediment; multi-channel river systems; flow modelling;
sediment transport |
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