Look up: aggradation

1. 
   Aggradation
   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.
   Found on http://www.csc.noaa.gov/text/glossary.ht
   
   
2. 
   aggradation
   a) generally, the building up of land surfaces by deposition; b) more particularly, the filling up of the bed of a watercourse by deposition of detritus, in contrast to its scouring by abrasion Category: The cosmos • accumulation of sediment in a channel Category: The cosmos • The process of filling up and raising the bed of a watercourse or other body of water through depo...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
3. 
   Aggradation
   `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. The increase in sediment is caused by a decrease in soil binding that results from plant growth being suppressed. The drier conditions cause river flow to de...
   Found on http://en.wikipedia.org/wiki/Aggradation
   
   
4. 
   Aggradation
   Readjustment of the stream profile where the stream channel is raised by the deposition of bed load.
   Found on http://www.physicalgeography.net/physgeo