Aggradation

Aggradation

Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport. The mass balance between sediment being transported and sediment in the bed is described by the Exner equation. This term used in geology for the increase in land elevation due to the deposition of sediment.

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Part of Speech: noun
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Industry/Domain: Water bodies
Category: Rivers
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aggradation

Water bodies; Rivers

Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport. The mass balance between sediment being ...

aggradation

Geography; Physical geography

The building up of the surface of land by water- borne or wind-borne material.

aggradation

Earth science; Geology

The building up of deposits by rivers within channels which were forced to drop the load they are carrying. This results in bed elevation.

aggradation

Engineering; Civil engineering

Geologic process wherein streambeds, floodplains, sandbars, and the bottom of water bodies are raised in elevation by the deposition of sediment; the opposite of degradation.

aggradation

Biology; Ecology

A downward accumulation of stream-carried inorganic matter. Often has the effect of making the bed of a stream or flood plain rise. Also, a phase of forest biomass accumulation in ...

aggradation

Natural environment; Water

a progressive build up of a channel bed with sediment over several years due to a normal sequence of scour and deposition, as distinguished from the rise and fall of the channel ...