General and progressive buildup of the longitudinal profile of a channel bed due to sediment deposition.
The building up, or raising in elevation of the bottoms of water bodies, including streambeds and floodplains, through the deposition of sediment.
The accumulation of sediment on a flood plain or on an alluvial fan that is sufficient to cause an increase in elevation of that surface;
The process by which a Stream's gradient steepens due to increased Deposition of sediment
accumulation of sediment in a stream channel on an alluvial fan or on a floodplain. Also applied to sediment accumulation on slopes.
The geologic process by which various parts of the surface of the earth are raised in ELEVATION or built up by the deposition of material transported by water or wind.
A progressive buildup or raising of the channel bed due to sediment deposition. Permanent or continuous aggradation is an indicator that a change in the stream's discharge and sediment characteristics is taking place.
General and progressive raising of a stream bed by deposition of sediment. Modification of the earth's surface in the direction of uniformity of grade, or slope, by deposition as in a river bed.
(1) The raising of stream beds or flood plains by deposition of sediment eroded and transported from upstream. (2) The build-up of sediments at the headwaters of a lake or reservoir or at a point where streamflow slows to the point that it will drop part or all of its sediment load. (3) The building of a floodplain by sediment deposition; the filling of a depression or drainageway with sediment; the building of a fan by deposition of an alluvial mantle. (4) Modification of the earth's surface in the direction of uniformity of grade or slope, by Deposition, as in a river bed. Opposite of Degradation.
The process of building up a streambank through sediment deposition.
Aggradation in geology is the accumulation of sediment in rivers and nearby landforms. Aggradation occurs when sediment supply exceeds the ability of a river to transport the sediment. As an example, the quantity of sediment entering a river channel may increase when climate becomes drier.
