Abstract
During sediment transport downstream, river systems mix
sediments from different parts of their catchments. During
deposition, sediments are often unmixed again in different
depositional environments (facies). During fluvial transport,
between erosion and deposition of sediment, the sediment
is sorted too. A commonly observed phenomenon is
downstream fining (Frings, 2007), which is the tendency for
bed sediments of
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