Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland
We present a 3-year record of seasonal variations in ice speed and frontal ablation of 10 marine-terminating outlet glaciers along the coast of Prudhoe Land in northwestern Greenland. The glaciers showed seasonal speedup initiated between late May and early June, and terminated between late June and...
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Cambridge University Press
2020
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ftdoajarticles:oai:doaj.org/article:39fa1f71907242dbba750a63a5ed49a4 2023-05-15T15:09:11+02:00 Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland Daiki Sakakibara Shin Sugiyama 2020-02-01T00:00:00Z https://doi.org/10.1017/jog.2019.81 https://doaj.org/article/39fa1f71907242dbba750a63a5ed49a4 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143019000819/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.81 0022-1430 1727-5652 https://doaj.org/article/39fa1f71907242dbba750a63a5ed49a4 Journal of Glaciology, Vol 66, Pp 25-34 (2020) Arctic glaciology glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2020 ftdoajarticles https://doi.org/10.1017/jog.2019.81 2023-03-12T01:30:57Z We present a 3-year record of seasonal variations in ice speed and frontal ablation of 10 marine-terminating outlet glaciers along the coast of Prudhoe Land in northwestern Greenland. The glaciers showed seasonal speedup initiated between late May and early June, and terminated between late June and early July. Ice speed subsequently decreased from July to September. The timing of the speedup coincided with the onset of the air temperature rise to above freezing, suggesting an influence of meltwater availability on the glacier dynamics. No clear relationship was found between the speedup and the terminus position or the sea-ice/ice-mélange conditions. These results suggest that the meltwater input to the glacier bed triggered the summer speedup. The excess of summer speed (June–August) over the mean for the rest of the year accounted for 0.5–13% of the annual ice motion. Several glaciers showed seasonal frontal variations, i.e. retreat in summer and advance in winter. This was not due to ice-speed variations, but was driven by seasonal variations in frontal ablation. The results demonstrate the dominant effect of glacier surface melting on the seasonal speedup, and the importance of seasonal speed patterns on longer-term ice motion of marine-terminating outlet glaciers in Greenland. Article in Journal/Newspaper Arctic glacier Greenland Journal of Glaciology Prudhoe land Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Prudhoe Land ENVELOPE(-67.528,-67.528,77.762,77.762) Journal of Glaciology 66 255 25 34 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic glaciology glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic glaciology glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Daiki Sakakibara Shin Sugiyama Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
topic_facet |
Arctic glaciology glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
We present a 3-year record of seasonal variations in ice speed and frontal ablation of 10 marine-terminating outlet glaciers along the coast of Prudhoe Land in northwestern Greenland. The glaciers showed seasonal speedup initiated between late May and early June, and terminated between late June and early July. Ice speed subsequently decreased from July to September. The timing of the speedup coincided with the onset of the air temperature rise to above freezing, suggesting an influence of meltwater availability on the glacier dynamics. No clear relationship was found between the speedup and the terminus position or the sea-ice/ice-mélange conditions. These results suggest that the meltwater input to the glacier bed triggered the summer speedup. The excess of summer speed (June–August) over the mean for the rest of the year accounted for 0.5–13% of the annual ice motion. Several glaciers showed seasonal frontal variations, i.e. retreat in summer and advance in winter. This was not due to ice-speed variations, but was driven by seasonal variations in frontal ablation. The results demonstrate the dominant effect of glacier surface melting on the seasonal speedup, and the importance of seasonal speed patterns on longer-term ice motion of marine-terminating outlet glaciers in Greenland. |
format |
Article in Journal/Newspaper |
author |
Daiki Sakakibara Shin Sugiyama |
author_facet |
Daiki Sakakibara Shin Sugiyama |
author_sort |
Daiki Sakakibara |
title |
Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_short |
Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_full |
Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_fullStr |
Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_full_unstemmed |
Seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_sort |
seasonal ice-speed variations in 10 marine-terminating outlet glaciers along the coast of prudhoe land, northwestern greenland |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://doi.org/10.1017/jog.2019.81 https://doaj.org/article/39fa1f71907242dbba750a63a5ed49a4 |
long_lat |
ENVELOPE(-67.528,-67.528,77.762,77.762) |
geographic |
Arctic Greenland Prudhoe Land |
geographic_facet |
Arctic Greenland Prudhoe Land |
genre |
Arctic glacier Greenland Journal of Glaciology Prudhoe land Sea ice |
genre_facet |
Arctic glacier Greenland Journal of Glaciology Prudhoe land Sea ice |
op_source |
Journal of Glaciology, Vol 66, Pp 25-34 (2020) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143019000819/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2019.81 0022-1430 1727-5652 https://doaj.org/article/39fa1f71907242dbba750a63a5ed49a4 |
op_doi |
https://doi.org/10.1017/jog.2019.81 |
container_title |
Journal of Glaciology |
container_volume |
66 |
container_issue |
255 |
container_start_page |
25 |
op_container_end_page |
34 |
_version_ |
1766340408825085952 |