nivationn.

Brit.

/nʌɪˈveɪʃn/, U.S.

/naɪˈveɪʃ(ə)n/

Origin: A borrowing from Latin, combined with an English element. Etymons: Latin niv- , nix , -ation suffix.

Etymology: < classical Latin niv-, nix snow (see nival adj.) + -ation suffix. Compare French nivation (1909). Compare nivated adj.

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.

ΘΚΠ

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).

单词	nivation
释义	nivationn. Brit. /nʌɪˈveɪʃn/, U.S. /naɪˈveɪʃ(ə)n/ Origin: A borrowing from Latin, combined with an English element. Etymons: Latin niv- , nix , -ation suffix. Etymology: < classical Latin niv-, nix snow (see nival adj.) + -ation suffix. Compare French nivation (1909). Compare nivated adj. 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. ΘΚΠ 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). < n.1900
随便看	gallery-exhibition gallery-frame gallery-furnace gallery-goer gallery-hit gallery-hitting gallery-keeper gallery-ladder gallery-like gallery-man gallery-picture gallery-play gallery-post gallery-practice gallery-road gallery-shot gallery-stairs gallery-stroke gallery-trotter gallery-walks galleryattendant gallerycase gallerycritic gallerydoor galleryexhibition