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EQUILIBRIUM LINE GLACIER [3 records]
Record 1 - internal organization data 2020-08-10
Record 1, English
Record 1, Subject field(s)
- Scientific Measurements and Analyses
- Glaciology
Record 1, Main entry term, English
- equilibrium line altitude
1, record 1, English, equilibrium%20line%20altitude
correct
Record 1, Abbreviations, English
- ELA 2, record 1, English, ELA
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The average elevation of the zone separating net annual ablation and accumulation on a glacier surface. 3, record 1, English, - equilibrium%20line%20altitude
Record number: 1, Textual support number: 1 CONT
The ELA can rarely be observed as a line at the same elevation across the entire width of the glacier due to local topographic and climatic variations in accumulation and ablation... Thus, the ELA is the average altitude of the equilibrium line. 3, record 1, English, - equilibrium%20line%20altitude
Record 1, French
Record 1, Domaine(s)
- Mesures et analyse (Sciences)
- Glaciologie
Record 1, Main entry term, French
- altitude de la ligne d'équilibre glaciaire
1, record 1, French, altitude%20de%20la%20ligne%20d%27%C3%A9quilibre%20glaciaire
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- altitude de la LEG 2, record 1, French, altitude%20de%20la%20LEG
correct, feminine noun
- altitude de la ligne d'équilibre 3, record 1, French, altitude%20de%20la%20ligne%20d%27%C3%A9quilibre
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
La limite inférieure de [la] frange peut être représentée par l'isotherme -2°C (concordance attestée par des sondages géo-électriques), sa limite supérieure par l'altitude de la ligne d'équilibre glaciaire (LEG); au final, son extension altitudinale croît ainsi d'ouest en est, en relation avec la hausse de la LEG. 1, record 1, French, - altitude%20de%20la%20ligne%20d%27%C3%A9quilibre%20glaciaire
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2020-08-10
Record 2, English
Record 2, Subject field(s)
- Scientific Measurements and Analyses
- Glaciology
Record 2, Main entry term, English
- equilibrium line of glacier
1, record 2, English, equilibrium%20line%20of%20glacier
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- glacier equilibrium line 2, record 2, English, glacier%20equilibrium%20line
correct
- equilibrium line 3, record 2, English, equilibrium%20line
correct
- equilibrium limit 4, record 2, English, equilibrium%20limit
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The boundary on a glacier between the ablation area [below] and accumulation area [above]. 5, record 2, English, - equilibrium%20line%20of%20glacier
Record number: 2, Textual support number: 1 CONT
... accumulation and ablation don’t occur equally over the whole surface of the glacier. Ablation dominates the snout of the glacier, where the climate is warmer and iceberg calving can happen. Accumulation therefore dominates the upper part of the glacier, where temperature is low and precipitation is suitable for snowfall... So a glacier can be divided into two areas, an accumulation zone and an ablation zone. The line separating the two is called the equilibrium line... 6, record 2, English, - equilibrium%20line%20of%20glacier
Record number: 2, Textual support number: 1 OBS
No net mass is gained or lost at this location. In the absence of superimposed ice, this line is equal to the snow line at the end of the mass balance year. 5, record 2, English, - equilibrium%20line%20of%20glacier
Record 2, French
Record 2, Domaine(s)
- Mesures et analyse (Sciences)
- Glaciologie
Record 2, Main entry term, French
- ligne d'équilibre glaciaire
1, record 2, French, ligne%20d%27%C3%A9quilibre%20glaciaire
correct, feminine noun
Record 2, Abbreviations, French
- LEG 2, record 2, French, LEG
correct, feminine noun
Record 2, Synonyms, French
- ligne d'équilibre d'un glacier 3, record 2, French, ligne%20d%27%C3%A9quilibre%20d%27un%20glacier
correct, feminine noun
- ligne d'équilibre 4, record 2, French, ligne%20d%27%C3%A9quilibre
correct, feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
[...] ligne qui sépare la zone supérieure du glacier où l'accumulation domine dans le bilan de la zone d'ablation qui voit au contraire disparaître plus de glace qu'il ne s'en forme. 5, record 2, French, - ligne%20d%27%C3%A9quilibre%20glaciaire
Record number: 2, Textual support number: 1 CONT
La limite entre ces deux zones [accumulation et ablation] est dénommée ligne d'équilibre d'un glacier. Le bilan de masse annuel est nul (autant d'accumulation que de fonte). L'altitude de la ligne d'équilibre varie évidemment d'une année à l'autre (parfois de plusieurs centaines de mètres) notamment en fonction de deux paramètres climatiques : a) La quantité de chutes de neige totale tombée au cours de l'année, en particulier durant la saison hivernale, détermine l'accumulation. b) Les températures estivales régissent la fonte (ablation) durant la belle saison. 6, record 2, French, - ligne%20d%27%C3%A9quilibre%20glaciaire
Record number: 2, Textual support number: 1 OBS
[La] ligne d'équilibre [...] n'existe donc que pour les glaciers soumis à de la fonte. 7, record 2, French, - ligne%20d%27%C3%A9quilibre%20glaciaire
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Medición y análisis (Ciencias)
- Glaciología
Record 2, Main entry term, Spanish
- línea de equilibrio de un glaciar
1, record 2, Spanish, l%C3%ADnea%20de%20equilibrio%20de%20un%20glaciar
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Línea o zona de un glaciar en la que la ablación anual equilibra la acumulación anual. 2, record 2, Spanish, - l%C3%ADnea%20de%20equilibrio%20de%20un%20glaciar
Record 3 - internal organization data 1991-04-12
Record 3, English
Record 3, Subject field(s)
- Glaciology
- Geomorphology and Geomorphogeny
Record 3, Main entry term, English
- activity index
1, record 3, English, activity%20index
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- energy of glacierization 2, record 3, English, energy%20of%20glacierization
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
The rate of change with altitude of net balance of a glacier, measured in the vicinity of the equilibrium line. High values indicate vigorous transfer of excess accumulation to lower altitudes; low values indicate minimal or sluggish transfer. Usually measured in millimeters per meter. The term was introduced by Meier in 1961. 2, record 3, English, - activity%20index
Record 3, French
Record 3, Domaine(s)
- Glaciologie
- Géomorphologie et géomorphogénie
Record 3, Main entry term, French
- énergie de glaciation
1, record 3, French, %C3%A9nergie%20de%20glaciation
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- coefficient d'activité 2, record 3, French, coefficient%20d%27activit%C3%A9
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Taux de variation du bilan spécifique d'un glacier avec l'altitude, au voisinage de la ligne d'équilibre. 3, record 3, French, - %C3%A9nergie%20de%20glaciation
Record 3, Spanish
Record 3, Textual support, Spanish
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