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Tidewater glaciers: frontal flow acceleration and basal sliding


Vieli, Andreas; Funk, Martin; Blatter, Heinz (2000). Tidewater glaciers: frontal flow acceleration and basal sliding. Annals of Glaciology, 31(1):217-221.

Abstract

A numerical glacier-flow model (finite-element method) is used to suggest the processes that control the flow behind the calving front of a tidewater glacier. The model is developed for grounded calving glaciers and includes an effective-pressure-dependent sliding law. The sliding law is implemented by adding a soft basal layer with a variable viscosity. The model is applied on Hansbreen, a tidewater calving glacier in Svalbard. Comparison between modeled surface velocities and observed velocity data shows good agreement. We conclude that the flow of a grounded calving glacier can be modeled with an effective-pressure-dependent sliding law.

Abstract

A numerical glacier-flow model (finite-element method) is used to suggest the processes that control the flow behind the calving front of a tidewater glacier. The model is developed for grounded calving glaciers and includes an effective-pressure-dependent sliding law. The sliding law is implemented by adding a soft basal layer with a variable viscosity. The model is applied on Hansbreen, a tidewater calving glacier in Svalbard. Comparison between modeled surface velocities and observed velocity data shows good agreement. We conclude that the flow of a grounded calving glacier can be modeled with an effective-pressure-dependent sliding law.

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31 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2000
Deposited On:20 Mar 2017 08:14
Last Modified:20 Mar 2017 08:14
Publisher:International Glaciological Society
ISSN:0260-3055
Publisher DOI:https://doi.org/10.3189/172756400781820417

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