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.
Original language | English (US) |
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Pages (from-to) | 765-768 |
Number of pages | 4 |
Journal | Geology |
Volume | 33 |
Issue number | 10 |
DOIs | |
State | Published - Oct 2005 |
Externally published | Yes |
Keywords
- Acoustic Doppler profilers
- Density current
- Underflow
- Velocity pulsing
ASJC Scopus subject areas
- Geology