Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation
Abstract Under evaluation is the range of the parameters of internal viscosity and surface friction of flowing avalanches in order to represent the flow numerically by computer program AVALNCH. Nominal values of these parameters are determined to be in the range 0.4 to 0.6 for, snow flowing on snow,...
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1979
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Online Access: | http://dx.doi.org/10.1017/s002214300001409x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300001409X |
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crcambridgeupr:10.1017/s002214300001409x 2024-03-03T08:45:58+00:00 Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation Lang, T. E. Martinelli, M. 1979 http://dx.doi.org/10.1017/s002214300001409x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300001409X en eng Cambridge University Press (CUP) Journal of Glaciology volume 22, issue 86, page 117-126 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1979 crcambridgeupr https://doi.org/10.1017/s002214300001409x 2024-02-08T08:37:11Z Abstract Under evaluation is the range of the parameters of internal viscosity and surface friction of flowing avalanches in order to represent the flow numerically by computer program AVALNCH. Nominal values of these parameters are determined to be in the range 0.4 to 0.6 for, snow flowing on snow, with values as high as 0.8 to 0.9 for snow flowing on rough ground. Using a nominal avalanche path, the basic parameters: (1) depth of initial release slab, (2) viscosity and friction, (3) adverse grade, and (4) flow spreading are determined to be in the order listed as regards their relative effect on avalanche runout distance. Program AVALNCH, which permits treatment of flow parameters separately from geometric parameters, provides a versatile tool for the prediction of avalanche runout, as well as for related studies of avalanche dynamics. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 22 86 117 126 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Lang, T. E. Martinelli, M. Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
topic_facet |
Earth-Surface Processes |
description |
Abstract Under evaluation is the range of the parameters of internal viscosity and surface friction of flowing avalanches in order to represent the flow numerically by computer program AVALNCH. Nominal values of these parameters are determined to be in the range 0.4 to 0.6 for, snow flowing on snow, with values as high as 0.8 to 0.9 for snow flowing on rough ground. Using a nominal avalanche path, the basic parameters: (1) depth of initial release slab, (2) viscosity and friction, (3) adverse grade, and (4) flow spreading are determined to be in the order listed as regards their relative effect on avalanche runout distance. Program AVALNCH, which permits treatment of flow parameters separately from geometric parameters, provides a versatile tool for the prediction of avalanche runout, as well as for related studies of avalanche dynamics. |
format |
Article in Journal/Newspaper |
author |
Lang, T. E. Martinelli, M. |
author_facet |
Lang, T. E. Martinelli, M. |
author_sort |
Lang, T. E. |
title |
Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
title_short |
Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
title_full |
Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
title_fullStr |
Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
title_full_unstemmed |
Application of Numerical Transient Fluid Dynamics to Snow Avalanche Flow. Part II. Avalanche Modeling and Parameter Error Evaluation |
title_sort |
application of numerical transient fluid dynamics to snow avalanche flow. part ii. avalanche modeling and parameter error evaluation |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s002214300001409x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S002214300001409X |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 22, issue 86, page 117-126 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s002214300001409x |
container_title |
Journal of Glaciology |
container_volume |
22 |
container_issue |
86 |
container_start_page |
117 |
op_container_end_page |
126 |
_version_ |
1792501690078855168 |