Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland
Satellite images were analyzed to measure the frontal positions and ice speeds of 19 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland from 1987 to 2014. All the studied glaciers retreated over the study period at a rate of between 12 and 200 m a−1, with a me...
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Cambridge University Press
2018
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ftdoajarticles:oai:doaj.org/article:9c40a81c669545378f9b4374bccb25c7 2023-05-15T15:09:04+02:00 Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland DAIKI SAKAKIBARA SHIN SUGIYAMA 2018-04-01T00:00:00Z https://doi.org/10.1017/jog.2018.20 https://doaj.org/article/9c40a81c669545378f9b4374bccb25c7 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143018000205/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.20 0022-1430 1727-5652 https://doaj.org/article/9c40a81c669545378f9b4374bccb25c7 Journal of Glaciology, Vol 64, Pp 300-310 (2018) Arctic glaciology glacier fluctuations glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2018 ftdoajarticles https://doi.org/10.1017/jog.2018.20 2023-03-12T01:30:59Z Satellite images were analyzed to measure the frontal positions and ice speeds of 19 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland from 1987 to 2014. All the studied glaciers retreated over the study period at a rate of between 12 and 200 m a−1, with a median (mean) retreat rate of 30 (40) m a−1. The glacier retreat began in the year ~2000, which coincided with an increase in summer mean air temperature from 1.4 to 5.5 °C between 1996 and 2000 in this region. Ice speed near the front of the studied glaciers ranged between 20 and 1740 m a−1 in 2014, and many of them accelerated in the early 2000s. In general, the faster retreat was observed at the glaciers that experienced greater acceleration, as represented by Tracy Glacier, which experienced a retreat of 200 m a−1 and a velocity increase of 930 m a−1 during the study period. A possible interpretation of this observation is that flow acceleration induced dynamic thinning near the termini, resulting in enhanced calving and rapid retreat of the studied glaciers. We hypothesize that atmospheric warming conditions in the late 1990s triggered glacier retreat in northwestern Greenland since 2000. Article in Journal/Newspaper Arctic glacier Greenland Journal of Glaciology Prudhoe land Directory of Open Access Journals: DOAJ Articles Arctic Greenland Prudhoe Land ENVELOPE(-67.528,-67.528,77.762,77.762) Tracy Glacier ENVELOPE(102.333,102.333,-65.933,-65.933) Journal of Glaciology 64 244 300 310 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic glaciology glacier fluctuations glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Arctic glaciology glacier fluctuations glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 DAIKI SAKAKIBARA SHIN SUGIYAMA Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
topic_facet |
Arctic glaciology glacier fluctuations glacier monitoring ice velocity remote sensing Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Satellite images were analyzed to measure the frontal positions and ice speeds of 19 marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland from 1987 to 2014. All the studied glaciers retreated over the study period at a rate of between 12 and 200 m a−1, with a median (mean) retreat rate of 30 (40) m a−1. The glacier retreat began in the year ~2000, which coincided with an increase in summer mean air temperature from 1.4 to 5.5 °C between 1996 and 2000 in this region. Ice speed near the front of the studied glaciers ranged between 20 and 1740 m a−1 in 2014, and many of them accelerated in the early 2000s. In general, the faster retreat was observed at the glaciers that experienced greater acceleration, as represented by Tracy Glacier, which experienced a retreat of 200 m a−1 and a velocity increase of 930 m a−1 during the study period. A possible interpretation of this observation is that flow acceleration induced dynamic thinning near the termini, resulting in enhanced calving and rapid retreat of the studied glaciers. We hypothesize that atmospheric warming conditions in the late 1990s triggered glacier retreat in northwestern Greenland since 2000. |
format |
Article in Journal/Newspaper |
author |
DAIKI SAKAKIBARA SHIN SUGIYAMA |
author_facet |
DAIKI SAKAKIBARA SHIN SUGIYAMA |
author_sort |
DAIKI SAKAKIBARA |
title |
Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_short |
Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_full |
Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_fullStr |
Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_full_unstemmed |
Ice front and flow speed variations of marine-terminating outlet glaciers along the coast of Prudhoe Land, northwestern Greenland |
title_sort |
ice front and flow speed variations of marine-terminating outlet glaciers along the coast of prudhoe land, northwestern greenland |
publisher |
Cambridge University Press |
publishDate |
2018 |
url |
https://doi.org/10.1017/jog.2018.20 https://doaj.org/article/9c40a81c669545378f9b4374bccb25c7 |
long_lat |
ENVELOPE(-67.528,-67.528,77.762,77.762) ENVELOPE(102.333,102.333,-65.933,-65.933) |
geographic |
Arctic Greenland Prudhoe Land Tracy Glacier |
geographic_facet |
Arctic Greenland Prudhoe Land Tracy Glacier |
genre |
Arctic glacier Greenland Journal of Glaciology Prudhoe land |
genre_facet |
Arctic glacier Greenland Journal of Glaciology Prudhoe land |
op_source |
Journal of Glaciology, Vol 64, Pp 300-310 (2018) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143018000205/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.20 0022-1430 1727-5652 https://doaj.org/article/9c40a81c669545378f9b4374bccb25c7 |
op_doi |
https://doi.org/10.1017/jog.2018.20 |
container_title |
Journal of Glaciology |
container_volume |
64 |
container_issue |
244 |
container_start_page |
300 |
op_container_end_page |
310 |
_version_ |
1766340307889160192 |