Evaluation of in-channel gravel storage with morphology-based gravel budgets developed from planimetric data
نویسندگان
چکیده
منابع مشابه
Morphology and Morphodynamics of Gravel Beaches
Contents 1. Introduction 2. Gravelly Beach Morphology 2.1. Gravelly beach profiles 2.2. Berms and the beach step 2.3. Cusps 3. Hydrodynamics of gravel beaches 3.1. Waves 3.2. Swash phase and percolation effects 3.3. Hydrodynamic effects of the beach step 4. Morphosedimentology of Gravel Beaches 4.1. Size and shape sorting 4.2. Measuring gravel size and shape. 4.3. Bluck models of gravel beach s...
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In many gravel-bedded rivers, floods that fill the channel banks create just enough shear stress to move the median-sized gravel particles on the bed surface (D50). Because this observation is common and is supported by theory, the coincidence of bankfull flow and the incipient motion of D50 has become a commonly used assumption. However, not all natural gravel channels actually conform to this...
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[1] Partial transport is documented in the gravel bed channel of Carnation Creek using magnetically tagged stones. For four flood peaks the active proportion of surface grains was used to map streambed areas into distinct units of three different levels of grain entrainment. In partially mobile regions of the bed, the active proportion of surface grains declines with grain size. As flow increas...
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[1] In a drainage network, sediment is transferred through a series of channel/valley segments (natural sediment storage reservoirs) that are distinguished from their neighbors by their particular capacity to store and transport sediment. We propose that the sediment transport capacity of each reservoir is a unique positive function of storage volume, which influences sediment mobility and avai...
متن کاملDo gravel bed river size distributions record channel network structure?
[1] Bed load sediment particles supplied to channels by hillslopes are reduced in size by abrasion during downstream transport. The branching structure of the channel network creates a distribution of downstream travel distances to a given reach of river and thus may strongly influence the grain size distribution of the long-term bed load flux through that reach. Here we investigate this hypoth...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Earth Surface
سال: 2003
ISSN: 0148-0227
DOI: 10.1029/2002jf000002