Field experiments to determine the effect of a debris layer on ablation of glacier ice
Ablation of glacier ice has been observed with artifical debris layers prepared with Ottawa sand (ASTM C-109) ranging from 0.01 to 0.1 m thick. Data on external variables observed during the experiments and determination of physical constants of the debris layers have allowed the testing of a propos...
Published in: | Annals of Glaciology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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1981
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Online Access: | https://doi.org/10.3189/172756481794352432 https://nrc-publications.canada.ca/eng/view/ft/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/eng/view/object/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/fra/voir/objet/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 |
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:20379007 2024-01-21T09:59:09+01:00 Field experiments to determine the effect of a debris layer on ablation of glacier ice Nakawo, M. Young, G. J. 1981 text https://doi.org/10.3189/172756481794352432 https://nrc-publications.canada.ca/eng/view/ft/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/eng/view/object/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/fra/voir/objet/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 eng eng issn:0260-3055 Annals of Glaciology, Volume: 2, Publication date: 1981, Pages: 85–91 doi:10.3189/172756481794352432 report_number:DBR-P-1010 glaciers glacier debris débris article 1981 ftnrccanada https://doi.org/10.3189/172756481794352432 2023-12-24T00:02:09Z Ablation of glacier ice has been observed with artifical debris layers prepared with Ottawa sand (ASTM C-109) ranging from 0.01 to 0.1 m thick. Data on external variables observed during the experiments and determination of physical constants of the debris layers have allowed the testing of a proposed simple model. Theoretical predictions compare favourably with the observations. Discussion is extended to a proposal for a simple method by which ablation under a debris layer could be estimated even if the thermal conductivity or thermal resistance of the material were unknown. On a observé l'ablation d'un glacier suite à l'application de couches de roches détritiques artificielles, préparées avec du sable d'Ottawa (ASTM C-109), dont l'épaisseur variait de 0.01 à 0.1 m. Les données recueillies sur les variables extérieures observées en cours d'expérience, de même que l'identification positive des constantes physiques des couches détritiques, ont permis de mettre à l'essai un modèle simple proposé. Les observations ont permis de constater la justesse des prédictions théoriques. Les auteurs de cette recherche ont voulu aller plus loin en proposant une méthode simple qui permettrait de prédire l'ablation sous une couche détritique, même si la conductivité ou la résistance thermique du matériau utilisé n'étaient pas connues. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Annals of Glaciology National Research Council Canada: NRC Publications Archive Annals of Glaciology 2 85 91 |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
glaciers glacier debris débris |
spellingShingle |
glaciers glacier debris débris Nakawo, M. Young, G. J. Field experiments to determine the effect of a debris layer on ablation of glacier ice |
topic_facet |
glaciers glacier debris débris |
description |
Ablation of glacier ice has been observed with artifical debris layers prepared with Ottawa sand (ASTM C-109) ranging from 0.01 to 0.1 m thick. Data on external variables observed during the experiments and determination of physical constants of the debris layers have allowed the testing of a proposed simple model. Theoretical predictions compare favourably with the observations. Discussion is extended to a proposal for a simple method by which ablation under a debris layer could be estimated even if the thermal conductivity or thermal resistance of the material were unknown. On a observé l'ablation d'un glacier suite à l'application de couches de roches détritiques artificielles, préparées avec du sable d'Ottawa (ASTM C-109), dont l'épaisseur variait de 0.01 à 0.1 m. Les données recueillies sur les variables extérieures observées en cours d'expérience, de même que l'identification positive des constantes physiques des couches détritiques, ont permis de mettre à l'essai un modèle simple proposé. Les observations ont permis de constater la justesse des prédictions théoriques. Les auteurs de cette recherche ont voulu aller plus loin en proposant une méthode simple qui permettrait de prédire l'ablation sous une couche détritique, même si la conductivité ou la résistance thermique du matériau utilisé n'étaient pas connues. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Nakawo, M. Young, G. J. |
author_facet |
Nakawo, M. Young, G. J. |
author_sort |
Nakawo, M. |
title |
Field experiments to determine the effect of a debris layer on ablation of glacier ice |
title_short |
Field experiments to determine the effect of a debris layer on ablation of glacier ice |
title_full |
Field experiments to determine the effect of a debris layer on ablation of glacier ice |
title_fullStr |
Field experiments to determine the effect of a debris layer on ablation of glacier ice |
title_full_unstemmed |
Field experiments to determine the effect of a debris layer on ablation of glacier ice |
title_sort |
field experiments to determine the effect of a debris layer on ablation of glacier ice |
publishDate |
1981 |
url |
https://doi.org/10.3189/172756481794352432 https://nrc-publications.canada.ca/eng/view/ft/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/eng/view/object/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 https://nrc-publications.canada.ca/fra/voir/objet/?id=152697cb-a4a6-4352-ab07-2e9180d5a607 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_relation |
issn:0260-3055 Annals of Glaciology, Volume: 2, Publication date: 1981, Pages: 85–91 doi:10.3189/172756481794352432 report_number:DBR-P-1010 |
op_doi |
https://doi.org/10.3189/172756481794352432 |
container_title |
Annals of Glaciology |
container_volume |
2 |
container_start_page |
85 |
op_container_end_page |
91 |
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1788694407092895744 |