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Whole flow field dynamics and velocity pulsing within natural sediment-laden underflows

James L. Best, Ray A. Kostaschuk, Jeffrey Peakall, Paul V. Villard and Mark Franklin
Whole flow field dynamics and velocity pulsing within natural sediment-laden underflows
Geology (Boulder) (October 2005) 33 (10): 765-768

Abstract

Sediment-laden density underflows are important agents of erosion and deposition and are especially significant in the management of human-made reservoirs, pollutant dispersal, and sediment deposition in the world's oceans. Quantification of continuous, sediment-laden underflows in Lillooet Lake, British Columbia, shows that the underflows descend along a distinct plunge line but, although the input from the source is constant, adopt a distinct pulsing in their velocity structure. Such velocity pulsing will produce temporally and spatially varying bed shear stresses, sediment erosion and/or deposition, and fluid mixing, and represents a central property of underflows that must be incorporated into models of density current behavior.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 33
Serial Issue: 10
Title: Whole flow field dynamics and velocity pulsing within natural sediment-laden underflows
Affiliation: University of Leeds, Earth and Biosphere Institute, Leeds, United Kingdom
Pages: 765-768
Published: 200510
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 33
Accession Number: 2005-074666
Categories: Hydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch map
N49°15'00" - N49°19'60", W123°10'00" - W123°07'00"
Secondary Affiliation: University of Guelph, CAN, CanadaSernas Group, CAN, Canada
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200544
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