Size of snow particles in a powder-snow avalanche
International audience Little quantitative information is available concerning the size of ice particles in the turbulent clouds of powder-snow avalanches. To quantify particle size distributions, we have developed an experimental device that collects particles in real-scale powder avalanches. The d...
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ftccsdartic:oai:HAL:hal-02595325v1 2023-05-15T16:57:26+02:00 Size of snow particles in a powder-snow avalanche Taille des particules de neige dans une avalanche de neige poudreuse Rastello, Marie Rastello, Fabrice Bellot, H. Ousset, F. Dufour, F. Meier, L. Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) École normale supérieure - Lyon (ENS Lyon) WSL SLF DAVOS DORF CHE Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) 2011 https://hal.inrae.fr/hal-02595325 https://doi.org/10.3189/002214311795306637 en eng HAL CCSD International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.3189/002214311795306637 hal-02595325 https://hal.inrae.fr/hal-02595325 doi:10.3189/002214311795306637 IRSTEA: PUB00032351 WOS: 000288526400014 ISSN: 0022-1430 Journal of Glaciology https://hal.inrae.fr/hal-02595325 Journal of Glaciology, International Glaciological Society, 2011, 57 (201), pp.151-156. ⟨10.3189/002214311795306637⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.3189/002214311795306637 2021-10-09T23:25:34Z International audience Little quantitative information is available concerning the size of ice particles in the turbulent clouds of powder-snow avalanches. To quantify particle size distributions, we have developed an experimental device that collects particles in real-scale powder avalanches. The device was placed on the concrete bunker of the Swiss Vall´ee de la Sionne avalanche dynamics test site. On 31 January 2003, a large powder-snow avalanche struck the bunker and we were able to collect particle samples. The collected particles have been photographed and the pictures digitized. An image analysis tool allows us to determine an equivalent particle radius. The captured particles have a geometric mean of 0.16mm; the largest particles were 0.8mm in size and the smallest particles 0.03mm. Article in Journal/Newspaper Journal of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Journal of Glaciology 57 201 151 156 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Rastello, Marie Rastello, Fabrice Bellot, H. Ousset, F. Dufour, F. Meier, L. Size of snow particles in a powder-snow avalanche |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Little quantitative information is available concerning the size of ice particles in the turbulent clouds of powder-snow avalanches. To quantify particle size distributions, we have developed an experimental device that collects particles in real-scale powder avalanches. The device was placed on the concrete bunker of the Swiss Vall´ee de la Sionne avalanche dynamics test site. On 31 January 2003, a large powder-snow avalanche struck the bunker and we were able to collect particle samples. The collected particles have been photographed and the pictures digitized. An image analysis tool allows us to determine an equivalent particle radius. The captured particles have a geometric mean of 0.16mm; the largest particles were 0.8mm in size and the smallest particles 0.03mm. |
author2 |
Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) École normale supérieure - Lyon (ENS Lyon) WSL SLF DAVOS DORF CHE Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
format |
Article in Journal/Newspaper |
author |
Rastello, Marie Rastello, Fabrice Bellot, H. Ousset, F. Dufour, F. Meier, L. |
author_facet |
Rastello, Marie Rastello, Fabrice Bellot, H. Ousset, F. Dufour, F. Meier, L. |
author_sort |
Rastello, Marie |
title |
Size of snow particles in a powder-snow avalanche |
title_short |
Size of snow particles in a powder-snow avalanche |
title_full |
Size of snow particles in a powder-snow avalanche |
title_fullStr |
Size of snow particles in a powder-snow avalanche |
title_full_unstemmed |
Size of snow particles in a powder-snow avalanche |
title_sort |
size of snow particles in a powder-snow avalanche |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.inrae.fr/hal-02595325 https://doi.org/10.3189/002214311795306637 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
ISSN: 0022-1430 Journal of Glaciology https://hal.inrae.fr/hal-02595325 Journal of Glaciology, International Glaciological Society, 2011, 57 (201), pp.151-156. ⟨10.3189/002214311795306637⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3189/002214311795306637 hal-02595325 https://hal.inrae.fr/hal-02595325 doi:10.3189/002214311795306637 IRSTEA: PUB00032351 WOS: 000288526400014 |
op_doi |
https://doi.org/10.3189/002214311795306637 |
container_title |
Journal of Glaciology |
container_volume |
57 |
container_issue |
201 |
container_start_page |
151 |
op_container_end_page |
156 |
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1766048972050268160 |