Studies in Glacier Physics on the Penny Ice Cap, Baffin Island, 1953 Part IV: The flow of Highway Glacier

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Abstract:

The horizontal and vertical motions of eight points on the surface of Highway Glacier, Baffin Island are reported. The average horizontal speed below the lowest tributary glacier is 56 metres/year. The major part of this motion arises from the glacier sliding on its bed. The mean shear stress on the bed is practically constant and equal to about 0.9 bars, but it is much smaller beneath the retreating tongue. A measure of the retreat in the lower part of the glacier is obtained from the difference between the ice discharge and the net ablation.

RÉSUMÉ. Cette communication décrit Ie mouvement, en direction horizontale et verticale, de huit points situés á la surface du “Highway Glacier” sur I'ite de Baffin. La vitesse de déplacement en dessous du dernier glacier tributaire est en moyenne de 56 métres par an. Ce mouvement est d û en grande partie au glissement du glacier sur son lit. L'effort tranchant moyen á la surface du lit du glacier est pratiquement constant et d'environ 0.9 bars, mais il est beaucoup moindre en dessous de la langue en retrait. La différence entre Ie débit annuel et la perte annuelle de glace donne une mesure du retrait ou de la perte en volume dans la partie inférieure du glacier.

Document Type: Research Article

DOI: http://dx.doi.org/10.3189/002214355793702082

Publication date: October 1, 1955

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  • The Journal of Glaciology is published six times per year. It accepts submissions from any discipline related to the study of snow and ice. All articles are peer reviewed. The Journal is included in the ISI Science Citation Index.
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