Methodological approaches to infer end-of-winter snow distribution on alpine glaciers
Snow accumulation is an important component of the mass balance of alpine glaciers. To improve our understanding of the processes related to accumulation and their representation in state-of-the-art mass-balance models, extensive field measurements are required. We present measurements of snow accum...
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International Glaciological Society
2013
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ftunivzuerich:oai:www.zora.uzh.ch:83970 2024-09-15T18:15:42+00:00 Methodological approaches to infer end-of-winter snow distribution on alpine glaciers Sold, Leo Huss, Matthias Hoelzle, Martin Andereggen, Hubert Joerg, Philip C Zemp, Michael 2013 application/pdf https://www.zora.uzh.ch/id/eprint/83970/ https://www.zora.uzh.ch/id/eprint/83970/1/2013_ZempM_t13J015.pdf https://doi.org/10.5167/uzh-83970 https://doi.org/10.3189/2013JoG13J015 eng eng International Glaciological Society https://www.zora.uzh.ch/id/eprint/83970/1/2013_ZempM_t13J015.pdf doi:10.5167/uzh-83970 doi:10.3189/2013JoG13J015 urn:issn:0022-1430 info:eu-repo/semantics/openAccess Sold, Leo; Huss, Matthias; Hoelzle, Martin; Andereggen, Hubert; Joerg, Philip C; Zemp, Michael (2013). Methodological approaches to infer end-of-winter snow distribution on alpine glaciers. Journal of Glaciology, 59(218):1047-1059. Institute of Geography 910 Geography & travel Journal Article PeerReviewed info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2013 ftunivzuerich https://doi.org/10.5167/uzh-8397010.3189/2013JoG13J015 2024-07-31T00:01:49Z Snow accumulation is an important component of the mass balance of alpine glaciers. To improve our understanding of the processes related to accumulation and their representation in state-of-the-art mass-balance models, extensive field measurements are required. We present measurements of snow accumulation distribution on Findelengletscher, Switzerland, for April 2010 using (1) in situ snow probings, (2) airborne ground-penetrating radar (GPR) and (3) differencing of two airborne light detection and ranging (lidar) digital elevation models (DEMs). Calculating high-resolution snow depth from DEM-differencing requires careful correction for vertical ice-flow velocity and densification in the accumulation area. All three methods reveal a general increase in snow depth with elevation, but also a significant small-scale spatial variability. Lidar-differencing and in situ snow probings show good agreement for the mean specific winter balance (0.72 and 0.78 m w.e., respectively). The lidar-derived distributed snow depth reveals significant zonal correlations with elevation, slope and curvature in a multiple linear regression model. Unlike lidar-differencing, GPR-derived snow depth is not affected by glacier dynamics or firn compaction, but to a smaller degree by snow density and liquid water content. It is thus a valuable independent data source for validation. The simultaneous availability of the three datasets facilitates the comparison of the methods and contributes to a better understanding of processes that govern winter accumulation distribution on alpine glaciers. Article in Journal/Newspaper Journal of Glaciology University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
institution |
Open Polar |
collection |
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive |
op_collection_id |
ftunivzuerich |
language |
English |
topic |
Institute of Geography 910 Geography & travel |
spellingShingle |
Institute of Geography 910 Geography & travel Sold, Leo Huss, Matthias Hoelzle, Martin Andereggen, Hubert Joerg, Philip C Zemp, Michael Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
topic_facet |
Institute of Geography 910 Geography & travel |
description |
Snow accumulation is an important component of the mass balance of alpine glaciers. To improve our understanding of the processes related to accumulation and their representation in state-of-the-art mass-balance models, extensive field measurements are required. We present measurements of snow accumulation distribution on Findelengletscher, Switzerland, for April 2010 using (1) in situ snow probings, (2) airborne ground-penetrating radar (GPR) and (3) differencing of two airborne light detection and ranging (lidar) digital elevation models (DEMs). Calculating high-resolution snow depth from DEM-differencing requires careful correction for vertical ice-flow velocity and densification in the accumulation area. All three methods reveal a general increase in snow depth with elevation, but also a significant small-scale spatial variability. Lidar-differencing and in situ snow probings show good agreement for the mean specific winter balance (0.72 and 0.78 m w.e., respectively). The lidar-derived distributed snow depth reveals significant zonal correlations with elevation, slope and curvature in a multiple linear regression model. Unlike lidar-differencing, GPR-derived snow depth is not affected by glacier dynamics or firn compaction, but to a smaller degree by snow density and liquid water content. It is thus a valuable independent data source for validation. The simultaneous availability of the three datasets facilitates the comparison of the methods and contributes to a better understanding of processes that govern winter accumulation distribution on alpine glaciers. |
format |
Article in Journal/Newspaper |
author |
Sold, Leo Huss, Matthias Hoelzle, Martin Andereggen, Hubert Joerg, Philip C Zemp, Michael |
author_facet |
Sold, Leo Huss, Matthias Hoelzle, Martin Andereggen, Hubert Joerg, Philip C Zemp, Michael |
author_sort |
Sold, Leo |
title |
Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
title_short |
Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
title_full |
Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
title_fullStr |
Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
title_full_unstemmed |
Methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
title_sort |
methodological approaches to infer end-of-winter snow distribution on alpine glaciers |
publisher |
International Glaciological Society |
publishDate |
2013 |
url |
https://www.zora.uzh.ch/id/eprint/83970/ https://www.zora.uzh.ch/id/eprint/83970/1/2013_ZempM_t13J015.pdf https://doi.org/10.5167/uzh-83970 https://doi.org/10.3189/2013JoG13J015 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Sold, Leo; Huss, Matthias; Hoelzle, Martin; Andereggen, Hubert; Joerg, Philip C; Zemp, Michael (2013). Methodological approaches to infer end-of-winter snow distribution on alpine glaciers. Journal of Glaciology, 59(218):1047-1059. |
op_relation |
https://www.zora.uzh.ch/id/eprint/83970/1/2013_ZempM_t13J015.pdf doi:10.5167/uzh-83970 doi:10.3189/2013JoG13J015 urn:issn:0022-1430 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5167/uzh-8397010.3189/2013JoG13J015 |
_version_ |
1810453629566451712 |