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(Article of periodic en Anglais - 1989)

Document title

Structure and stability of the former subglacial drainage system of the Glacier de Tsanfleuron, Switzerland

Authors(s) and Affiliation(s)

SHARP M. ; CAMPBELL GEMMELL J. ; TISON J. L. ;

Abstract

This system covers some 51 per cent of the bedrock surface area, and is believed to have transported the bulk of supraglacially-derived meltwaters through the glacier. Using the cavity hydraulics model of Kamb (1987), it is shown that the geometry of the system rendered it stable against collapse by meltback of channel roofs into a tunnel-dominated system. The system appears to have adjusted to varying discharges by a combination of varying water pressure and changing the total cross-sectional area of flow by altering the number of active channels connecting cavities

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 1989, vol. 14, no2 [pp. 119-134]

Bibliographic references : 18 réf.

Language

Anglais

Localisation

Centre national de la recherche scientifique

INIST-CNRS, Cote INIST : 17355

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