Discharge and fluvial sediment transport in a semi-arid high mountain catchment, Agua Negra, San Juan, Argentina

2008 ◽  
pp. 213-224 ◽  
Author(s):  
Dietrich Barsch ◽  
Hans Happoldt ◽  
Roland Mäusbacher ◽  
Lothar Schrott ◽  
Gerd Schukraft
Keyword(s):  
Sediment Transport ◽  
San Juan ◽  
High Mountain ◽  
Fluvial Sediment ◽  
Mountain Catchment ◽  
Semi Arid ◽  
Fluvial Sediment Transport

Sediment slugs: large-scale fluctuations in fluvial sediment transport rates and storage volumes

1995 ◽  
Vol 19 (4) ◽  
pp. 500-519 ◽  
Author(s):  
A.P. Nicholas ◽  
P.J. Ashworth ◽  
M.J. Kirkby ◽  
M.G. Macklin ◽  
T. Murray
Keyword(s):  
Sediment Transport ◽  
Sediment Supply ◽  
Fluvial Systems ◽  
Event Scale ◽  
Fluvial Sediment ◽  
Sediment Routing ◽  
Basin Scale ◽  
Wide Range ◽  
And Storage ◽  
Fluvial Sediment Transport

Variations in fluvial sediment transport rates and storage volumes have been described previously as sediment waves or pulses. These features have been identified over a wide range of temporal and spatial scales and have been categorized using existing bedform classifications. Here we describe the factors controlling the generation and propagation of what we term sediment slugs. These can be defined as bodies of clastic material associated with disequilibrium conditions in fluvial systems over time periods above the event scale. Slugs range in magnitude from unit bars (Smith, 1974) up to sedimentary features generated by basin-scale sediment supply disturbances (Trimble, 1981). At lower slug magnitudes, perturbations in sediment transport are generated by local riverbank and/or bed erosion. Larger-scale features result from the occurrence of rare high- magnitude geomorphic events, and the impacts on water and sediment production of tectonics, glaciation, climate change and anthropogenic influences. Simple sediment routing functions are presented which may be used to describe the propagation of sediment slugs in fluvial systems. Attention is drawn to components of the fluvial system where future research is urgently required to improve our quantitative understanding of drainage-basin sediment dynamics.

Methodological sensitivity of morphometric estimates of coarse fluvial sediment transport

Geomorphology ◽  
2003 ◽  
Vol 53 (3-4) ◽  
pp. 299-316 ◽  
Author(s):  
James Brasington ◽  
Joe Langham ◽  
Barbara Rumsby
Keyword(s):  
Sediment Transport ◽  
Fluvial Sediment ◽  
Fluvial Sediment Transport
Sign in / Sign up

Export Citation Format

Share Document