On the inclusion of a velocity-dependent basal drag in avalanche models

The Savage-Hutter model is generalized by including a velocity-dependent drag in addition to the usual Coulomb dry friction at the base of the avalanche. Both linear and quadratic velocity dependencies are considered, with either constant or asymptotically constant drag coefficients for large thickn...

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Main Authors: Gray, J. M N T, Tai, Y. C.
Format: Article in Journal/Newspaper
Language:English
Published: 1998
Subjects:
Annals of Glaciology
Online Access:https://research.manchester.ac.uk/en/publications/eb729d90-7775-4c16-8b46-cbe3755df599
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spelling ftumanchesterpub:oai:pure.atira.dk:publications/eb729d90-7775-4c16-8b46-cbe3755df599 2023-11-12T04:01:21+01:00 On the inclusion of a velocity-dependent basal drag in avalanche models Gray, J. M N T Tai, Y. C. 1998 https://research.manchester.ac.uk/en/publications/eb729d90-7775-4c16-8b46-cbe3755df599 eng eng info:eu-repo/semantics/restrictedAccess Gray , J M N T & Tai , Y C 1998 , ' On the inclusion of a velocity-dependent basal drag in avalanche models ' , Annals of Glaciology , vol. 26 , pp. 277-280 . article 1998 ftumanchesterpub 2023-10-30T09:11:25Z The Savage-Hutter model is generalized by including a velocity-dependent drag in addition to the usual Coulomb dry friction at the base of the avalanche. Both linear and quadratic velocity dependencies are considered, with either constant or asymptotically constant drag coefficients for large thickness h. The singular nature of the constant coefficient model for small h is demonstrated and it is shown that the asymptotic model allows the tail of the avalanche to move at a finite velocity. The inclusion of velocity drag changes the stress state in the avalanche and new earth-pressure relations are derived and investigated. Article in Journal/Newspaper Annals of Glaciology The University of Manchester: Research Explorer
institution Open Polar
collection The University of Manchester: Research Explorer
op_collection_id ftumanchesterpub
language English
description The Savage-Hutter model is generalized by including a velocity-dependent drag in addition to the usual Coulomb dry friction at the base of the avalanche. Both linear and quadratic velocity dependencies are considered, with either constant or asymptotically constant drag coefficients for large thickness h. The singular nature of the constant coefficient model for small h is demonstrated and it is shown that the asymptotic model allows the tail of the avalanche to move at a finite velocity. The inclusion of velocity drag changes the stress state in the avalanche and new earth-pressure relations are derived and investigated.
format Article in Journal/Newspaper
author Gray, J. M N T
Tai, Y. C.
spellingShingle Gray, J. M N T
Tai, Y. C.
On the inclusion of a velocity-dependent basal drag in avalanche models
author_facet Gray, J. M N T
Tai, Y. C.
author_sort Gray, J. M N T
title On the inclusion of a velocity-dependent basal drag in avalanche models
title_short On the inclusion of a velocity-dependent basal drag in avalanche models
title_full On the inclusion of a velocity-dependent basal drag in avalanche models
title_fullStr On the inclusion of a velocity-dependent basal drag in avalanche models
title_full_unstemmed On the inclusion of a velocity-dependent basal drag in avalanche models
title_sort on the inclusion of a velocity-dependent basal drag in avalanche models
publishDate 1998
url https://research.manchester.ac.uk/en/publications/eb729d90-7775-4c16-8b46-cbe3755df599
genre Annals of Glaciology
genre_facet Annals of Glaciology
op_source Gray , J M N T & Tai , Y C 1998 , ' On the inclusion of a velocity-dependent basal drag in avalanche models ' , Annals of Glaciology , vol. 26 , pp. 277-280 .
op_rights info:eu-repo/semantics/restrictedAccess
_version_ 1782332400132423680

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