TERMIUM Plus®

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ROUNDED GRAIN [1 record]

Filter results by subject field Alphabetical list of terms

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Alphabetical list of terms

Record 1 2008-09-23

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
DEF

Snow crystal formed during the equitemperature metamorphism process.

CONT

Rounded Grains are those in which the original form is no longer discernible and the crystal takes on a generally rounded amorphous appearance. Rounded grains typically tend to be smaller grains and are usually significantly smaller than the original grain from which they formed. Typical grain size is often less than 1 mm. Commonly referred to as "rounds" these grains tend to be found in harder or stronger snowpack layers. Rounded grains typically form when there is a weak temperature gradient in the snowpack (<1 degree/10 cm). This weak temperature gradient occurs most often in areas where the snowpack is deep and temperatures are mild.

CONT

There is a strong layer of rounds at the base of the snowpack. [Example approved by the Avalanche Bulletin Terminology Standardization Committee.]

OBS

rounded grain; round: terms officially approved by the Avalanche Bulletin Terminology Standardization Committee.

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
DEF

Cristal de neige résultant de la métamorphose de faible gradient.

CONT

Il y a une couche résistante de grains fins de forte cohésion située à la base du manteau neigeux. [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.]

OBS

Ne pas confondre avec «grain rond» qui se rend en anglais par «melt-freeze particle».

OBS

grain fin : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.

Spanish

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