Debris transport in a temperate valley glacier: Haut Glacier d’Arolla, Valais, Switzerland
2005; Cambridge University Press; Volume: 51; Issue: 172 Linguagem: Inglês
10.3189/172756505781829647
ISSN1727-5652
AutoresBecky Goodsell, Michael J. Hambrey, Neil F. Glasser,
Tópico(s)Climate change and permafrost
ResumoAbstract This paper considers the role of structural glaciology in debris entrainment, transport and deposition at Haut Glacier d’Arolla, a temperate valley glacier in Valais, Switzerland. Sedimentological descriptions and cIast anaIysis have been used to identify reIationships between ice structure and debris transport. Relationships identified are (1) debris associated with crevasse traces, (2) the folding of rockfall material incorporated within primary stratification to form medial moraines and (3) dirt cones and engIaciaI debris Iayers associated with reactivated crevasse traces. A conceptuaI modeI is introduced to summarize the manner in which ice structures at Haut Glacier d’Arolla control entrainment and deposition of debris.
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