An alluvial river is one in which the bed and banks are made up of mobile sediment and/or soil. Alluvial rivers are self-formed, meaning that their channels are shaped by the magnitude and frequency of the floods that they experience, and the ability of these floods to erode, deposit, and transport sediment.

2011年11月5日 · Based on the present analyses, a schematic Sk-Ku plane is presented to aid interpretation of the structure of steady state and developing alluvial bed surfaces from measured bed-elevation distributions, where various bed surface types (e.g., artificially smoothed beds, armoured gravel beds, planar beds of mobile uniform sediments, ripples, and ...

The bed surface of alluvial rivers is rarely plane and takes different geometric configurations called bed forms. Bed forms are created by the movement of riverbed sediments, especially...

Bed material: material that forms the bed and lower banks of the river and chiefly determines the morphology of the channel. In alluvial channels, it cor-responds with the coarser part of the sediment load transported by the river, and it may move either as bedload or as intermittently suspended load.

Alluvial Channels are critical to sediment transport, development of stratigraphic record, flooding, water resources – the most studied and best understood.

2006年4月28日 · In this review, the problem is studied by defining sediment transport regimes on the basis of the Shields number, a nondimensional measure of the capacity of the channel to move sediment of a given...

1980年1月1日 · Alluvial red beds comprise a variety of red beds formed in differing depositional environments and a wide spectrum of climatic conditions. Palaeoclimatic indicators, including palaeomagnetism, suggest that the majority of ancient alluvial …

interpretation of the structure of steady state and developing alluvial bed surfaces from measured bed-elevation distributions, where various bed surface types (e.g., artificially smoothed beds, armoured gravel beds, planar beds of mobile uniform sediments, ripples, and dunes) can be differentiated based on this diagram.

The morphology of an alluvial river channel is the consequence of sediment transport and sedimentation in the river. Morphological style is determined chiefly by the caliber and quantity of sediment delivered to the channel, although modulated by channel scale.

Rivers may be broadly classified into two endmember types: bedrock rivers, whose beds and banks are made of solid rock, and alluvial rivers, whose beds and banks are made of material transported by the river itself. Mixed bedrock–alluvial rivers also exist. Understand the sediment supply and transport conditions in which each river forms.