Aggradation (or alluviation) is the term used in geology for the increase in land elevation, typically in a river system, due to the deposition of sediment. Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport.

Aggradation is the increase in land elevation due to sediment deposition. River channels and levees commonly aggrade together and become elevated above the floodplain. This process eventually raises the downstream elevation and decreases the gradient.

2017年12月12日 · The meaning of AGGRADATION is a modification of the earth's surface in the direction of uniformity of grade by deposition.

Aggradation involves the buildup of sediment in a river over time as material is deposited by a river that is decreasing in kinetic energy. This increases the base level of a river. Degradation involves the lowering of the base level of a river due to sediment being eroded off the riverbed.

Aggradation is the deposition process in which depositional area fills with vertical stacking of sediment from the thick layer of water, as for example the case of deposition in the deep water far away from shore.

A process of physical geology, aggradation means to fill up with sediment (first used by Salisbury in the last century, 1893, p. 103; see Fig. 1). It is thus the opposite of degradation (q.v.).

2024年3月20日 · Aggradation occurs when sediment supply exceeds the transport capacity of a river or stream, leading to deposition and elevation of the riverbed or landscape, whereas degradation is the process of erosion or lowering of land surface due …

AGGRADATION definition: the process of increasing in size , volume , or level by the accumulation of sediment | Meaning, pronunciation, translations and examples in American English

2022年2月17日 · Aggradation and Degradation are processes that get rid of the unevenness of the land. Key Takeaways. Degradation refers to the process of lowering the earth’s surface due to erosion, while aggradation is the process of raising the surface through sediment deposition.

Aggradation (or alluviation) is the term used in geology for the increase in land elevation, typically in a river system, due to the deposition of sediment. Aggradation occurs in areas in which the supply of sediment is greater than the amount of material that the system is able to transport.