History and bathymetry of a surge-dammed lake
ABSTRACT. A survey was made in 1974 of the small lake which had formed as a result of the surge advance of Steele Glacier, Yukon Territory, in 1965-68. Maximum lake level is controlled by a drainage channel which passes over rock near the hydrologic left margin of Steele Glacier. Since the surge adv...
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| Format: | Text |
| Language: | English |
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1977
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.498.8805 http://pubs.aina.ucalgary.ca/arctic/Arctic30-4-217.pdf |
| Summary: | ABSTRACT. A survey was made in 1974 of the small lake which had formed as a result of the surge advance of Steele Glacier, Yukon Territory, in 1965-68. Maximum lake level is controlled by a drainage channel which passes over rock near the hydrologic left margin of Steele Glacier. Since the surge advance of 1965-68 the lake has twice drained subglacially, producing minor outburst floods on Steele Creek and increasing the discharge of the Donjek River which crosses the probable route of the Alaska Highway pipeline. RÉSUMÉ. Histoire et bathymétrie d’un lac formé par une crue exceptionnelle d’un glacier formant barrage. On fit une étude, en 1974, du petit lac qui s’était formé à la suite d’une crue exceptionnelle, en 1965-68, du glacier Steele, dans le Territoire du Yukon. Le niveau maximum du lac est contrôlé par un canal de drainage qui passe par-dessus un tcrrain rocailleux non loin du bord hydrologique gauche du glacier Steele. Depuis la crue exceptionnelle de 1965-68, le lac s’est drainé par deux fois au-dessous de la couche de glace, occasionnant des crues subites peu importantes du Steele Creek et augmentant le débit du Donjek River qui traverse le parcours proposé pour la pipeline de la Route de l’Alaska. |
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