Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry
Mass losses originating from supraglacial ice cliffs at the lower tongues of debris-covered glaciers are a potentially large component of the mass balance, but have rarely been quantified. In this study, we develop a method to estimate ice cliff volume losses based on high-resolution topographic dat...
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2016
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Online Access: | https://hdl.handle.net/20.500.11850/164565 https://hdl.handle.net/20.500.11850/377187 https://doi.org/10.3929/ethz-b-000164565 |
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/377187 2023-05-15T16:57:30+02:00 Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry Brun, Fanny Buri, Pascal Miles, Evan S. Wagnon, Patrick Steiner, Jakob Berthier, Etienne Ragettli, Silvan Kraaijenbrink, Philip Immerzeel, Walter W. Pellicciotti, Francesca 2016-08 application/application/pdf https://hdl.handle.net/20.500.11850/164565 https://hdl.handle.net/20.500.11850/377187 https://doi.org/10.3929/ethz-b-000164565 en eng International Glaciological Society info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2016.54 info:eu-repo/semantics/altIdentifier/wos/000383883000006 http://hdl.handle.net/20.500.11850/164565 http://hdl.handle.net/20.500.11850/377187 doi:10.3929/ethz-b-000164565 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International CC-BY Journal of Glaciology, 62 (234) Debris-covered glaciers Ice cliffs Terrestrial and aerial photogrammetry Structure for motion Ice volume losses info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftethz https://doi.org/20.500.11850/164565 https://doi.org/20.500.11850/377187 https://doi.org/10.3929/ethz-b-000164565 https://doi.org/10.1017/jog.2016.54 2022-04-25T14:04:56Z Mass losses originating from supraglacial ice cliffs at the lower tongues of debris-covered glaciers are a potentially large component of the mass balance, but have rarely been quantified. In this study, we develop a method to estimate ice cliff volume losses based on high-resolution topographic data derived from terrestrial and aerial photogrammetry. We apply our method to six cliffs monitored in May and October 2013 and 2014 using four different topographic datasets collected over the debris-covered Lirung Glacier of the Nepalese Himalayas. During the monsoon, the cliff mean backwasting rate was relatively consistent in 2013 (3.8 ± 0.3 cm w.e. d−1) and more heterogeneous among cliffs in 2014 (3.1 ± 0.7 cm w.e. d−1), and the geometric variations between cliffs are larger. Their mean backwasting rate is significantly lower in winter (October 2013–May 2014), at 1.0 ± 0.3 cm w.e. d−1. These results are consistent with estimates of cliff ablation from an energy-balance model developed in a previous study. The ice cliffs lose mass at rates six times higher than estimates of glacier-wide melt under debris, which seems to confirm that ice cliffs provide a large contribution to total glacier melt. ISSN:0022-1430 ISSN:1727-5652 Article in Journal/Newspaper Journal of Glaciology ETH Zürich Research Collection |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
Debris-covered glaciers Ice cliffs Terrestrial and aerial photogrammetry Structure for motion Ice volume losses |
spellingShingle |
Debris-covered glaciers Ice cliffs Terrestrial and aerial photogrammetry Structure for motion Ice volume losses Brun, Fanny Buri, Pascal Miles, Evan S. Wagnon, Patrick Steiner, Jakob Berthier, Etienne Ragettli, Silvan Kraaijenbrink, Philip Immerzeel, Walter W. Pellicciotti, Francesca Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
topic_facet |
Debris-covered glaciers Ice cliffs Terrestrial and aerial photogrammetry Structure for motion Ice volume losses |
description |
Mass losses originating from supraglacial ice cliffs at the lower tongues of debris-covered glaciers are a potentially large component of the mass balance, but have rarely been quantified. In this study, we develop a method to estimate ice cliff volume losses based on high-resolution topographic data derived from terrestrial and aerial photogrammetry. We apply our method to six cliffs monitored in May and October 2013 and 2014 using four different topographic datasets collected over the debris-covered Lirung Glacier of the Nepalese Himalayas. During the monsoon, the cliff mean backwasting rate was relatively consistent in 2013 (3.8 ± 0.3 cm w.e. d−1) and more heterogeneous among cliffs in 2014 (3.1 ± 0.7 cm w.e. d−1), and the geometric variations between cliffs are larger. Their mean backwasting rate is significantly lower in winter (October 2013–May 2014), at 1.0 ± 0.3 cm w.e. d−1. These results are consistent with estimates of cliff ablation from an energy-balance model developed in a previous study. The ice cliffs lose mass at rates six times higher than estimates of glacier-wide melt under debris, which seems to confirm that ice cliffs provide a large contribution to total glacier melt. ISSN:0022-1430 ISSN:1727-5652 |
format |
Article in Journal/Newspaper |
author |
Brun, Fanny Buri, Pascal Miles, Evan S. Wagnon, Patrick Steiner, Jakob Berthier, Etienne Ragettli, Silvan Kraaijenbrink, Philip Immerzeel, Walter W. Pellicciotti, Francesca |
author_facet |
Brun, Fanny Buri, Pascal Miles, Evan S. Wagnon, Patrick Steiner, Jakob Berthier, Etienne Ragettli, Silvan Kraaijenbrink, Philip Immerzeel, Walter W. Pellicciotti, Francesca |
author_sort |
Brun, Fanny |
title |
Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
title_short |
Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
title_full |
Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
title_fullStr |
Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
title_full_unstemmed |
Quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
title_sort |
quantifying volume loss from ice cliffs on debris-covered glaciers using high resolution terrestrial and aerial photogrammetry |
publisher |
International Glaciological Society |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11850/164565 https://hdl.handle.net/20.500.11850/377187 https://doi.org/10.3929/ethz-b-000164565 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, 62 (234) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/jog.2016.54 info:eu-repo/semantics/altIdentifier/wos/000383883000006 http://hdl.handle.net/20.500.11850/164565 http://hdl.handle.net/20.500.11850/377187 doi:10.3929/ethz-b-000164565 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/20.500.11850/164565 https://doi.org/20.500.11850/377187 https://doi.org/10.3929/ethz-b-000164565 https://doi.org/10.1017/jog.2016.54 |
_version_ |
1766049055139430400 |