Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland
Many glaciers along the southeast and northwest coast of Greenland have accelerated, increasing the ice sheet's contribution to global sea-level rise. Here, we map elevation changes on Upernavik Isstrøm (UI), West Greenland, during 2003-2009 using high-resolution Ice, Cloud and land Elevation S...
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ftdtupubl:oai:pure.atira.dk:publications/22bba4c1-c1b7-450d-88f5-afb032789425 2023-05-15T13:07:33+02:00 Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John M Joughin, Ian R Bamber, Jonathan L Csatho, Beata M van den Broeke, Michiel R Stearns, Leigh A Nielsen, Karina Babonis, Gregory S Hamilton, Gordon S Hurkmans, Ruud TWL Timm, Lars H 2011 https://orbit.dtu.dk/en/publications/22bba4c1-c1b7-450d-88f5-afb032789425 eng eng info:eu-repo/semantics/restrictedAccess Khan , S A , Kjær , K H , Korsgaard , N J , Wahr , J M , Joughin , I R , Bamber , J L , Csatho , B M , van den Broeke , M R , Stearns , L A , Nielsen , K , Babonis , G S , Hamilton , G S , Hurkmans , R TWL & Timm , L H 2011 , ' Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland ' , 2011 AGU Fall Meeting , San Francisco, CA , United States , 05/12/2011 - 09/12/2011 . CRYOSPHERE Glaciers Mass balance remote sensing Dynamics /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action conferenceObject 2011 ftdtupubl 2022-08-14T08:12:36Z Many glaciers along the southeast and northwest coast of Greenland have accelerated, increasing the ice sheet's contribution to global sea-level rise. Here, we map elevation changes on Upernavik Isstrøm (UI), West Greenland, during 2003-2009 using high-resolution Ice, Cloud and land Elevation Satellite (ICESat) laser altimeter data supplemented with altimeter surveys from NASA's Airborne Topographic Mapper (ATM) during 2002-2010. To assess thinning prior to 2002, we analyze aerial photographs from 1985. We document at least two distinct ice loss events characterized by rapid dynamic thinning, increased ice speed, and a retreat of the calving front. The most recent event coincides with the speedup of several glaciers along the northwest coast of Greenland in 2005, and with changes in the rate of mass loss observed using data from the Gravity Recovery and Climate Experiment (GRACE) satellite gravity mission. The first event of increased ice loss could have also taken place along the extended northwest coast. The total dynamic induced ice volume loss on the frontal portion of UI caused by the two events is 45.5 +/- 5.4 km3 (during 1985-2010), while the total melt induced ice volume loss during this same period is 7.4 +/- 1.3 km3. Conference Object Airborne Topographic Mapper Greenland Upernavik Technical University of Denmark: DTU Orbit Greenland Upernavik Isstrøm ENVELOPE(-54.500,-54.500,72.917,72.917) |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
CRYOSPHERE Glaciers Mass balance remote sensing Dynamics /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
spellingShingle |
CRYOSPHERE Glaciers Mass balance remote sensing Dynamics /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John M Joughin, Ian R Bamber, Jonathan L Csatho, Beata M van den Broeke, Michiel R Stearns, Leigh A Nielsen, Karina Babonis, Gregory S Hamilton, Gordon S Hurkmans, Ruud TWL Timm, Lars H Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
topic_facet |
CRYOSPHERE Glaciers Mass balance remote sensing Dynamics /dk/atira/pure/sustainabledevelopmentgoals/climate_action SDG 13 - Climate Action |
description |
Many glaciers along the southeast and northwest coast of Greenland have accelerated, increasing the ice sheet's contribution to global sea-level rise. Here, we map elevation changes on Upernavik Isstrøm (UI), West Greenland, during 2003-2009 using high-resolution Ice, Cloud and land Elevation Satellite (ICESat) laser altimeter data supplemented with altimeter surveys from NASA's Airborne Topographic Mapper (ATM) during 2002-2010. To assess thinning prior to 2002, we analyze aerial photographs from 1985. We document at least two distinct ice loss events characterized by rapid dynamic thinning, increased ice speed, and a retreat of the calving front. The most recent event coincides with the speedup of several glaciers along the northwest coast of Greenland in 2005, and with changes in the rate of mass loss observed using data from the Gravity Recovery and Climate Experiment (GRACE) satellite gravity mission. The first event of increased ice loss could have also taken place along the extended northwest coast. The total dynamic induced ice volume loss on the frontal portion of UI caused by the two events is 45.5 +/- 5.4 km3 (during 1985-2010), while the total melt induced ice volume loss during this same period is 7.4 +/- 1.3 km3. |
format |
Conference Object |
author |
Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John M Joughin, Ian R Bamber, Jonathan L Csatho, Beata M van den Broeke, Michiel R Stearns, Leigh A Nielsen, Karina Babonis, Gregory S Hamilton, Gordon S Hurkmans, Ruud TWL Timm, Lars H |
author_facet |
Khan, Shfaqat Abbas Kjær, Kurt H. Korsgaard, Niels Jákup Wahr, John M Joughin, Ian R Bamber, Jonathan L Csatho, Beata M van den Broeke, Michiel R Stearns, Leigh A Nielsen, Karina Babonis, Gregory S Hamilton, Gordon S Hurkmans, Ruud TWL Timm, Lars H |
author_sort |
Khan, Shfaqat Abbas |
title |
Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
title_short |
Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
title_full |
Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
title_fullStr |
Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
title_full_unstemmed |
Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland |
title_sort |
rapid dynamic thinning events during 1985-2010 on upernavik isstrøm, west greenland |
publishDate |
2011 |
url |
https://orbit.dtu.dk/en/publications/22bba4c1-c1b7-450d-88f5-afb032789425 |
long_lat |
ENVELOPE(-54.500,-54.500,72.917,72.917) |
geographic |
Greenland Upernavik Isstrøm |
geographic_facet |
Greenland Upernavik Isstrøm |
genre |
Airborne Topographic Mapper Greenland Upernavik |
genre_facet |
Airborne Topographic Mapper Greenland Upernavik |
op_source |
Khan , S A , Kjær , K H , Korsgaard , N J , Wahr , J M , Joughin , I R , Bamber , J L , Csatho , B M , van den Broeke , M R , Stearns , L A , Nielsen , K , Babonis , G S , Hamilton , G S , Hurkmans , R TWL & Timm , L H 2011 , ' Rapid dynamic thinning events during 1985-2010 on Upernavik Isstrøm, West Greenland ' , 2011 AGU Fall Meeting , San Francisco, CA , United States , 05/12/2011 - 09/12/2011 . |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1766059261420371968 |