Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP
Kangerlussuaq Glacier is one of Greenland’s largest tidewater outlet glaciers, accounting for approximately 5% of all ice discharge from the Greenland ice sheet. In 2018 the Kangerlussuaq ice front reached its most retreated position since observations began in 1932. We determine the relationship be...
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ftfrontimediafig:oai:figshare.com:article/8208557 2023-05-15T16:03:52+02:00 Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP Stephen Brough J. Rachel Carr Neil Ross James M. Lea 2019-05-31T08:25:10Z https://doi.org/10.3389/feart.2019.00123.s001 https://figshare.com/articles/Data_Sheet_1_Exceptional_Retreat_of_Kangerlussuaq_Glacier_East_Greenland_Between_2016_and_2018_ZIP/8208557 unknown doi:10.3389/feart.2019.00123.s001 https://figshare.com/articles/Data_Sheet_1_Exceptional_Retreat_of_Kangerlussuaq_Glacier_East_Greenland_Between_2016_and_2018_ZIP/8208557 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Greenland ice sheet marine-terminating glaciers basal topography ice discharge mass balance glacier retreat sea level rise remote sensing Dataset 2019 ftfrontimediafig https://doi.org/10.3389/feart.2019.00123.s001 2019-06-05T22:59:08Z Kangerlussuaq Glacier is one of Greenland’s largest tidewater outlet glaciers, accounting for approximately 5% of all ice discharge from the Greenland ice sheet. In 2018 the Kangerlussuaq ice front reached its most retreated position since observations began in 1932. We determine the relationship between retreat and: (i) ice velocity; and (ii) surface elevation change, to assess the impact of the retreat on the glacier trunk. Between 2016 and 2018 the glacier retreated ∼5 km and brought the Kangerlussuaq ice front into a major (∼15 km long) overdeepening. Coincident with this retreat, the glacier thinned as a result of near-terminus acceleration in ice flow. The subglacial topography means that 2016–2018 terminus recession is likely to trigger a series of feedbacks between retreat, thinning, and glacier acceleration, leading to a rapid and high-magnitude increase in discharge and sea level rise contribution. Dynamic thinning may continue until the glacier reaches the upward sloping bed ∼10 km inland of its current position. Incorporating these non-linear processes into prognostic models of the ice sheet to 2100 and beyond will be critical for accurate forecasting of the ice sheet’s contribution to sea level rise. Dataset East Greenland glacier Greenland Ice Sheet Kangerlussuaq Tidewater Frontiers: Figshare Greenland Kangerlussuaq ENVELOPE(-55.633,-55.633,72.633,72.633) |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Greenland ice sheet marine-terminating glaciers basal topography ice discharge mass balance glacier retreat sea level rise remote sensing |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Greenland ice sheet marine-terminating glaciers basal topography ice discharge mass balance glacier retreat sea level rise remote sensing Stephen Brough J. Rachel Carr Neil Ross James M. Lea Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change Greenland ice sheet marine-terminating glaciers basal topography ice discharge mass balance glacier retreat sea level rise remote sensing |
description |
Kangerlussuaq Glacier is one of Greenland’s largest tidewater outlet glaciers, accounting for approximately 5% of all ice discharge from the Greenland ice sheet. In 2018 the Kangerlussuaq ice front reached its most retreated position since observations began in 1932. We determine the relationship between retreat and: (i) ice velocity; and (ii) surface elevation change, to assess the impact of the retreat on the glacier trunk. Between 2016 and 2018 the glacier retreated ∼5 km and brought the Kangerlussuaq ice front into a major (∼15 km long) overdeepening. Coincident with this retreat, the glacier thinned as a result of near-terminus acceleration in ice flow. The subglacial topography means that 2016–2018 terminus recession is likely to trigger a series of feedbacks between retreat, thinning, and glacier acceleration, leading to a rapid and high-magnitude increase in discharge and sea level rise contribution. Dynamic thinning may continue until the glacier reaches the upward sloping bed ∼10 km inland of its current position. Incorporating these non-linear processes into prognostic models of the ice sheet to 2100 and beyond will be critical for accurate forecasting of the ice sheet’s contribution to sea level rise. |
format |
Dataset |
author |
Stephen Brough J. Rachel Carr Neil Ross James M. Lea |
author_facet |
Stephen Brough J. Rachel Carr Neil Ross James M. Lea |
author_sort |
Stephen Brough |
title |
Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
title_short |
Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
title_full |
Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
title_fullStr |
Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
title_full_unstemmed |
Data_Sheet_1_Exceptional Retreat of Kangerlussuaq Glacier, East Greenland, Between 2016 and 2018.ZIP |
title_sort |
data_sheet_1_exceptional retreat of kangerlussuaq glacier, east greenland, between 2016 and 2018.zip |
publishDate |
2019 |
url |
https://doi.org/10.3389/feart.2019.00123.s001 https://figshare.com/articles/Data_Sheet_1_Exceptional_Retreat_of_Kangerlussuaq_Glacier_East_Greenland_Between_2016_and_2018_ZIP/8208557 |
long_lat |
ENVELOPE(-55.633,-55.633,72.633,72.633) |
geographic |
Greenland Kangerlussuaq |
geographic_facet |
Greenland Kangerlussuaq |
genre |
East Greenland glacier Greenland Ice Sheet Kangerlussuaq Tidewater |
genre_facet |
East Greenland glacier Greenland Ice Sheet Kangerlussuaq Tidewater |
op_relation |
doi:10.3389/feart.2019.00123.s001 https://figshare.com/articles/Data_Sheet_1_Exceptional_Retreat_of_Kangerlussuaq_Glacier_East_Greenland_Between_2016_and_2018_ZIP/8208557 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2019.00123.s001 |
_version_ |
1766399565276119040 |