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The mean mass balance of the McCall Glacier, Brooks Range, Alaska, was estimated for the period 1958 to 1971. The three methods used, photogrammetry, mean height of the equilibrium line, and correlation with the height of the synoptic 500 mbar pressure level, all gave negative values, but the amount depended on the method used. This trend of glacier recession is in agreement with most observations of glaciers in the Brooks Range as well as with the majority of the glaciers in the Northern Hemisphere.
On a estimé le bilan de masse moyen du McCall Glacier, dans le Brooks Range en Alaska pour la période 1958 à 1971. Les trois méthodes utilisées, photogrammétrie, altitude moyenne de la ligne d'équilibre, et corrélation avec l'altitude de l'isobare synoptique 500 mbar, ont toutes donné des valeurs négatives, mais l'importance du déficit varie avec la méthode utilisée. Cette tendance au recul du glacier concorde avec la plupart des observations des glaciers du Brooks Range, aussi bien que de la majorité des glaciers de l'hémisphère nord.
Für den Zeitraum von 1958 bis 1971 wurde der mittlere Massen-haushalt des McCall-Glaciers in der Brooks-Range, Alaska, abgeschätzt. Die drei benutzten Methoden, nämlich Photogrammetrie, mittlere Höhe der Gleichgewichtslinie und Beziehund zur Höhe des synoptischen 500 mbar-Druckniveaus, lieferten durchweg negative Werte, deren Grösse jedoch von der benutzten Methode abhing. Diese Anzeichen eines Gletschcrrüekganges stimmen mit den meisten Beobachtungen an den Gletsehern der Brooks Range, aber auch mit denen an der Mehrzahl der Gletscher auf der Nordhemisphäre überein.
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