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Lag-time routing of suspended sediment concentrations during unsteady flow

W. Andrew Marcus
Lag-time routing of suspended sediment concentrations during unsteady flow
Geological Society of America Bulletin (May 1989) 101 (5): 644-651


Flood waves move downstream faster than the flow velocity, thus leaving the original floodwaters and their entrained sediments lagging increasingly farther behind with increasing distance downstream. This process can be modeled by routing the changes in discharge at the flood-wave celerity, while routing the sediments at the flow velocity. Testing of this model using data previously collected for the Bighorn River, Wyoming and Montana, indicates that differences in flood-wave and flow velocity can explain a large portion of the downstream variations in the relation of discharge to concentration through time. The routing model results suggest that one explanation of seasonal and storm-period variations in at-a-station sediment rating curves may be seasonal changes in the distance to sediment sources.--Modified journal abstract.

ISSN: 0016-7606
EISSN: 1943-2674
Serial Title: Geological Society of America Bulletin
Serial Volume: 101
Serial Issue: 5
Title: Lag-time routing of suspended sediment concentrations during unsteady flow
Author(s): Marcus, W. Andrew
Affiliation: Univ. Md., Dep. Geogr., College Park, MD, United States
Pages: 644-651
Published: 198905
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 18
Accession Number: 1989-032435
Categories: HydrogeologyEngineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 7 tables, sketch map
N45°00'00" - N46°04'00", W108°43'60" - W106°19'00"
N44°08'60" - N45°00'00", W108°39'00" - W107°07'60"
N42°30'00" - N46°08'60", W108°40'00" - W107°25'00"
N42°16'60" - N44°01'00", W110°02'60" - W107°30'00"
N43°25'00" - N44°07'60", W109°19'60" - W107°34'60"
N43°30'00" - N44°10'00", W108°37'60" - W107°07'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1989
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