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Bed load is complementary to suspended load and wash load. Bed load moves by rolling, sliding, and/or saltating (hopping). Generally, bed load downstream will be smaller and more rounded than bed load upstream (a process known as downstream fining). This is due in part to attrition and abrasion which results from the stones colliding with each ...
For this reason, bed material load exerts a control on river channel morphology. Bed load and wash load (the sediment that rides high in the flow and does not extract non-negligible momentum from it) together constitute the total load of sediment in a stream. [2] The order in which the three components of load have been considered – dissolved ...
The Tagliamento of Italy is an example of a gravel bed braided river. [26] The Piave, also in Italy, is an example of a river that is transitioning from braided to meandering due to human interventions. [27] The Waimakariri River of New Zealand is an example of a braided river with an extensive floodplain. [28]
Braid bars often originate from remnants of point bars or the growth of mid-channel unit bars in braided rivers. [1] These features typically form in rivers with a high sediment load, within channels characterized by a large bed load and easily-eroded bank material. [2] There are several mechanisms of formation.
A bedform is a geological feature that develops at the interface of fluid and a moveable bed, the result of bed material being moved by fluid flow. Examples include ripples and dunes on the bed of a river. Bedforms are often preserved in the rock record as a result of being present in a depositional setting.
The amount of matter carried by a large river is enormous. It has been estimated that the Mississippi River annually carries 406 million tons of sediment to the sea, [5] the Yellow River 796 million tons, and the Po River in Italy 67 million tons. [6] The names of many rivers derive from the color that the transported matter gives the water.
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