scholarly journals Entrainment and transport of coarse stream bed material in a fluviokarst watershed, south-central Missouri: a tracer particle study

2010 ◽  
Author(s):  
Nathan R. Rossman
Keyword(s):  
Tracer Particle ◽  
South Central ◽  
Bed Material ◽  
Stream Bed

Stream-bed armouring under known conditions of upstream sediment input

1984 ◽  
Vol 21 (9) ◽  
pp. 1061-1066 ◽  
Author(s):  
Eric J. Schiller ◽  
A. Charles Rowney
Keyword(s):  
Particle Size ◽  
Sediment Load ◽  
Experimental Tests ◽  
Direct Influence ◽  
Sediment Sources ◽  
Characteristic Parameters ◽  
Bed Forms ◽  
Sediment Input ◽  
Bed Material ◽  
Stream Bed

Experiments were conducted to assess ways in which an imposed sediment load can affect the formation and final nature of an armoured bed. A flume loaded with a quartz aggregate of known composition was subjected to various sediment-laden flows of water to produce armoured beds. Characteristic parameters of the armoured beds were then compared.In general, it was found that the final armoured bed can be significantly altered by an imposed sediment load. As the size of the input sediment increased, the amount of bed material that was eroded, the resulting particle size of the bed, and the total roughness of the bed all decreased. The formation of bed forms was very important in this process. The trends observed in these experimental tests indicate that the presence or absence of upstream sediment sources has a direct influence on the resulting armoured layer.

scholarly journals Variations in grain-size distribution of suspended sediment in a glacial meltwater stream, Austre Okstindbreen, Norway

1991 ◽  
Vol 37 (125) ◽  
pp. 113-119
Author(s):  
Erik Karlsen
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Suspended Sediment ◽  
Grain Size Distribution ◽  
Glacial Meltwater ◽  
Hyperbolic Distribution ◽  
Field Season ◽  
Bed Material ◽  
Grain Size Parameters ◽  
Stream Bed

Abstract Thirty-nine samples of suspended sediment from the meltwater stream of Austre Okstindbreen, Norway, were analysed using both moments and parameters of the hyperbolic distribution. The samples turned out to be non-normally distributed. No direct correlation was found between discharge and grain-size distribution, but it is supposed that the hydraulic influence is hidden behind factors like composition of morainic or stream-bed material. Through comparison of the grain-size parameters from two periods in the field season, it was possible to distinguish between two sediment populations.

scholarly journals Variations in grain-size distribution of suspended sediment in a glacial meltwater stream, Austre Okstindbreen, Norway

1991 ◽  
Vol 37 (125) ◽  
pp. 113-119 ◽  
Author(s):  
Erik Karlsen
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Suspended Sediment ◽  
Grain Size Distribution ◽  
Glacial Meltwater ◽  
Hyperbolic Distribution ◽  
Field Season ◽  
Bed Material ◽  
Grain Size Parameters ◽  
Stream Bed

AbstractThirty-nine samples of suspended sediment from the meltwater stream of Austre Okstindbreen, Norway, were analysed using both moments and parameters of the hyperbolic distribution. The samples turned out to be non-normally distributed. No direct correlation was found between discharge and grain-size distribution, but it is supposed that the hydraulic influence is hidden behind factors like composition of morainic or stream-bed material. Through comparison of the grain-size parameters from two periods in the field season, it was possible to distinguish between two sediment populations.

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