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SNOW METAMORPHISM [1 record]
Record 1 - internal organization data 2008-09-25
Record 1, English
Record 1, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 1, Main entry term, English
- snow metamorphism
1, record 1, English, snow%20metamorphism
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- metamorphism 2, record 1, English, metamorphism
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The change in the structure and texture of snow grains which result from variations in temperature, migration of liquid water and water vapor, and pressure within the snow cover. 2, record 1, English, - snow%20metamorphism
Record number: 1, Textual support number: 1 CONT
Metamorphism is a term borrowed from the geological sciences. In snow hydrology it refers to changes in snow texture caused by pressure and temperature conditions. The temperature of the layer determines the rate of metamorphism, and the temperature gradient across the layer largely determines the type of metamorphism. ... In a dry, seasonal snowpack, it is convenient to distinguish two types of metamorphism ... temperature-gradient metamorphism [and] equitemperature metamorphism. A third type of metamorphism takes place when snowpack temperatures reach 0°C and surface snow layers undergo frequent melt-freeze cycles. [It is] a process called ... melt-freeze metamorphism. 3, record 1, English, - snow%20metamorphism
Record number: 1, Textual support number: 1 OBS
There are two types of snow metamorphism : dry snow metamorphism (e.g. rounding and faceting) and wet snow metamorphism (or melt-freeze metamorphism). 4, record 1, English, - snow%20metamorphism
Record 1, French
Record 1, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 1, Main entry term, French
- métamorphose
1, record 1, French, m%C3%A9tamorphose
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- métamorphose de la neige 2, record 1, French, m%C3%A9tamorphose%20de%20la%20neige
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] nous distinguerons deux types de métamorphoses : les métamorphoses de la neige sèche et les métamorphoses de la neige humide. 1, record 1, French, - m%C3%A9tamorphose
Record number: 1, Textual support number: 1 OBS
Les métamorphoses de la neige sèche. La neige sèche est la neige qui ne contient pas d'eau sous forme liquide. Elle englobe [la métamorphose] - par faible gradient, [les particules reconnaissables] vont se transformer en grains fins; - par moyen gradient, [les particules reconnaissables] vont se transformer en grains à faces planes; - par fort gradient, [les particules reconnaissables] se transformeront en grains à faces planes (passage intermédiaire obligé) puis en gobelets. 2, record 1, French, - m%C3%A9tamorphose
Record number: 1, Textual support number: 2 OBS
La métamorphose de la neige humide. Le facteur qui intervient dans ce cas est unique : l'eau sous forme liquide. Le résultat de ce type de métamorphose aussi : le grain rond. [...] Le grain rond est donc le dernier stade d'évolution de la neige, avant sa disparition par fonte. 2, record 1, French, - m%C3%A9tamorphose
Record 1, Spanish
Record 1, Textual support, Spanish
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