nivationn.
/nʌɪˈveɪʃn/, U.S. /naɪˈveɪʃ(ə)n/ Physical Geography.
Erosion of the ground beneath and at the sides of a snow bank undergoing seasonal melting, resulting in the formation of a shallow depression.
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the world > the earth > structure of the earth > formation of features > glaciation > [noun] > specific processes
grooving1877
outwash1884
ice-scouring1888
plucking1893
ice scour1899
sapping1899
nivation1900
transfluence1949
1900 F. E. Matthes in 21st Ann. Rep. U.S. Geol. Surv. 1899–1900: Pt. 2 183 These névé effects..I shall, for the sake of brevity, speak of as effects of nivation.
1918 Proc. National Acad. Sci. U.S.A. 4 288 (heading) The importance of nivation as an erosive factor, and of soil flow as a transporting agency, in northern Greenland.
1957 G. E. Hutchinson Treat. Limnol. I. i. 59 A few cases may be found where nivation, or the freezing and thawing of water round patches of snow, has produced small closed depressions in jointed or fractured rocks.
1990 A. S. Trenhaile Geomorphol. Canada vii. 132 Nivation involves the erosion of a hillside by frost, gelifluction, and slopewash.
This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).
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