2013
DOI: 10.1002/2013jf002843
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Sediment supply and channel morphology in mountain river systems: 1. Relative importance of lithology, topography, and climate

Abstract: [1] Quantifying landscape-scale variations in sediment supply to streams and rivers is fundamental to our understanding of both denudational processes and stream channel morpho-dynamics. Previous studies have linked a variety of sediment-supply proxies to climatic, topographic, or geologic factors, but few have connected these directly to the characteristics of fluvial systems draining these landscapes. Here we correlate landscape controls on sediment supply to observed sedimentology and channel patterns throu… Show more

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Cited by 115 publications
(108 citation statements)
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“…Rivers with very high sediment supply are often braided (2), and aggradation occurs when the sediment supply to a channel is in excess of the channel's capacity to transport that sediment (14). Additionally, the bed surface can armor through size selective transport in low supply conditions (1, 3), or the bed surface grain size can fine in response to high sediment supply (15).…”
Section: Significancementioning
confidence: 99%
See 1 more Smart Citation
“…Rivers with very high sediment supply are often braided (2), and aggradation occurs when the sediment supply to a channel is in excess of the channel's capacity to transport that sediment (14). Additionally, the bed surface can armor through size selective transport in low supply conditions (1, 3), or the bed surface grain size can fine in response to high sediment supply (15).…”
Section: Significancementioning
confidence: 99%
“…Explaining widely observed trends in river channel hydraulic geometry remains an ongoing challenge in the field of geomorphology. Gravel-bedded alluvial rivers (whose bed and banks comprise sediment transported by the river) approach equilibrium geometry through feedbacks between deposition, erosion, and bed surface armoring as well as through channel slope change (1)(2)(3). These responses in channel geometry and surface grain size accommodate perturbations in the water and sediment supply regimes.…”
mentioning
confidence: 99%
“…However, morphological differences between source catchments and the total catchment area may change the relative importance of each parameter. For instance, Mueller and Pitlick (2013) noted the importance of lithology rather than relief or climate on the sediment discharge of small intermontane river catchments. In addition, Aalto et al (2006) stress the importance of lithology and relief on sediment discharge when analyzing larger catchment contributions to the terrestrial sink of the Bolivean foreland basins.…”
Section: Terrestrial Sink Sediment Budgetsmentioning
confidence: 99%
“…Long, 2009), they more likely have a greater initial threshold for particle movement by bed-armouring than ephemeral rivers (Reid et al, 1996;Hassan et al, 2009). Although, their armouring can though decrease as bed load concentrations increase (Müller and Pitlick, 2013). Hysteresis of both kinds have also been shown in perennial rivers regarding turbidity, but their flashy storm hydrographs have more often caused anti-clockwise (i.e.…”
Section: Moderate-and Low-magnitude Flow Events As Channel Modifiers 10mentioning
confidence: 99%