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aggrade
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aggrade
aggrade, v. Geol. (əˈgreɪd) [f. ag- + grade, after degrade.] trans. To fill up (a river bed, valley, etc.) with detritus. Also intr., to build up by aggradation. (The opposite of degrade v. 6.) Hence aˈggraded, aˈggrading ppl. adjs.; also aggraˈdation, the process of raising a surface by the deposit...
Oxford English Dictionary
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Base level
When base levels are stable or rising rivers may aggrade. Rising base levels may also drown the lower courses of rivers creating rias.
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depositional
depositional, a. (ˌdiːpəˈzɪʃənəl) [f. deposition 8 + -al.] Of, relating to, or caused by deposition.1900 Geogr. Jrnl. XVI. 461 Subordinate or local systems of crust-strains..are concentrated along old depositional and structural limits. 1902 [see aggrade v.]. 1967 Oceanogr. & Marine Biol. V. 120 Fin...
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Palaeochannel
Formation
Paleochannels form when river channels aggrade and so deposit sediment on their bed.
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degradation
▪ I. degradation1 (dɛgrəˈdeɪʃən) [a. F. dégradation (14th c. in Hatzf.), ad. med.L. dēgradātiōn-em, n. of action f. dēgradāre, to degrade: see -ation.] The action of degrading. 1. Deposition from some rank, office, or position of honour as an act of punishment; esp. the depriving of an ecclesiastic ...
Oxford English Dictionary
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Lake of Tunis
The lake continued to aggrade (an increase in land elevation, in this case of the lake bed, due to the deposition of sediment) during the 19th century.
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Environmental impacts of beavers
Therefore, beaver appear to increase riparian vegetation given enough years to aggrade sediments and pond heights sufficiently to create widened, well-watered
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