Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland
We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and fiveland terminating glaciers in Godthabsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 +/- 0.2 km(3) of ice loss, equivalent to 0.10 mm eustatic sea-level rise. An additional 3.5 +/- 0.3 km(...
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Format: | Article in Journal/Newspaper |
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Online Access: | https://pure.au.dk/portal/en/publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 https://doi.org/10.1017/jog.2016.138 https://pure.au.dk/ws/files/120623914/asynchronous_behavior_of_outlet_glaciers_feeding_godthabsfjord_nuup_kangerlua_and_the_triggering_of_narsap_sermias_retreat_in_sw_greenland.pdf http://www.scopus.com/inward/record.url?scp=85014634551&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 2024-06-23T07:53:01+00:00 Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland Motyka, Roman J. Cassotto, Ryan Truffer, Martin Kjeldsen, Kristian van As, Dirk Korsgaard, Niels J. Fahnestock, Mark Howat, Ian Langen, Peter L. Mortensen, John Lennert, Kunuk Rysgaard, Soren 2017-04 application/pdf https://pure.au.dk/portal/en/publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 https://doi.org/10.1017/jog.2016.138 https://pure.au.dk/ws/files/120623914/asynchronous_behavior_of_outlet_glaciers_feeding_godthabsfjord_nuup_kangerlua_and_the_triggering_of_narsap_sermias_retreat_in_sw_greenland.pdf http://www.scopus.com/inward/record.url?scp=85014634551&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/en/publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 info:eu-repo/semantics/openAccess Motyka , R J , Cassotto , R , Truffer , M , Kjeldsen , K , van As , D , Korsgaard , N J , Fahnestock , M , Howat , I , Langen , P L , Mortensen , J , Lennert , K & Rysgaard , S 2017 , ' Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland ' , Journal of Glaciology , vol. 63 , no. 238 , pp. 288-308 . https://doi.org/10.1017/jog.2016.138 , https://doi.org/10.1017/jog.2016.138 glacier calving glacier discharge glacier mass balance ice/atmosphere interactions ice/ocean interactions tidewater glaciers article 2017 ftuniaarhuspubl https://doi.org/10.1017/jog.2016.138 2024-06-04T14:19:21Z We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and fiveland terminating glaciers in Godthabsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 +/- 0.2 km(3) of ice loss, equivalent to 0.10 mm eustatic sea-level rise. An additional 3.5 +/- 0.3 km(3) was lost to the calving retreats of Kangiata Nunaata Sermia (KNS) and Narsap Sermia (NS), two tidewater glaciers that exhibited asynchronous behavior over the study period. KNS has retreated 22 km from its Little Ice Age (LIA) maximum (1761 AD), of which 0.8 km since 1985. KNS has stabilized in shallow water, but seasonally advects a 2 km long floating tongue. In contrast, NS began retreating from its LIA moraine in 2004-06 (0.6 km), re-stabilized, then retreated 3.3 km during 2010-14 into an over-deepened basin. Velocities at KNS ranged 5-6 km a(-1), while at NS they increased from 1.5 to 5.5 km a(-1) between 2004 and 2014. We present comprehensive analyses of glacier thinning, runoff, surface mass balance, ocean conditions, submarine melting, bed topography, ice melange and conclude that the 2010-14 NS retreat was triggered by a combination of factors but primarily by an increase in submarine melting. Article in Journal/Newspaper glacier Greenland Journal of Glaciology Tidewater Aarhus University: Research Greenland Narsap Sermia ENVELOPE(-49.750,-49.750,64.683,64.683) Journal of Glaciology 63 238 288 308 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
glacier calving glacier discharge glacier mass balance ice/atmosphere interactions ice/ocean interactions tidewater glaciers |
spellingShingle |
glacier calving glacier discharge glacier mass balance ice/atmosphere interactions ice/ocean interactions tidewater glaciers Motyka, Roman J. Cassotto, Ryan Truffer, Martin Kjeldsen, Kristian van As, Dirk Korsgaard, Niels J. Fahnestock, Mark Howat, Ian Langen, Peter L. Mortensen, John Lennert, Kunuk Rysgaard, Soren Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
topic_facet |
glacier calving glacier discharge glacier mass balance ice/atmosphere interactions ice/ocean interactions tidewater glaciers |
description |
We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and fiveland terminating glaciers in Godthabsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 +/- 0.2 km(3) of ice loss, equivalent to 0.10 mm eustatic sea-level rise. An additional 3.5 +/- 0.3 km(3) was lost to the calving retreats of Kangiata Nunaata Sermia (KNS) and Narsap Sermia (NS), two tidewater glaciers that exhibited asynchronous behavior over the study period. KNS has retreated 22 km from its Little Ice Age (LIA) maximum (1761 AD), of which 0.8 km since 1985. KNS has stabilized in shallow water, but seasonally advects a 2 km long floating tongue. In contrast, NS began retreating from its LIA moraine in 2004-06 (0.6 km), re-stabilized, then retreated 3.3 km during 2010-14 into an over-deepened basin. Velocities at KNS ranged 5-6 km a(-1), while at NS they increased from 1.5 to 5.5 km a(-1) between 2004 and 2014. We present comprehensive analyses of glacier thinning, runoff, surface mass balance, ocean conditions, submarine melting, bed topography, ice melange and conclude that the 2010-14 NS retreat was triggered by a combination of factors but primarily by an increase in submarine melting. |
format |
Article in Journal/Newspaper |
author |
Motyka, Roman J. Cassotto, Ryan Truffer, Martin Kjeldsen, Kristian van As, Dirk Korsgaard, Niels J. Fahnestock, Mark Howat, Ian Langen, Peter L. Mortensen, John Lennert, Kunuk Rysgaard, Soren |
author_facet |
Motyka, Roman J. Cassotto, Ryan Truffer, Martin Kjeldsen, Kristian van As, Dirk Korsgaard, Niels J. Fahnestock, Mark Howat, Ian Langen, Peter L. Mortensen, John Lennert, Kunuk Rysgaard, Soren |
author_sort |
Motyka, Roman J. |
title |
Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
title_short |
Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
title_full |
Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
title_fullStr |
Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
title_full_unstemmed |
Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland |
title_sort |
asynchronous behavior of outlet glaciers feeding godthabsfjord (nuup kangerlua) and the triggering of narsap sermia's retreat in sw greenland |
publishDate |
2017 |
url |
https://pure.au.dk/portal/en/publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 https://doi.org/10.1017/jog.2016.138 https://pure.au.dk/ws/files/120623914/asynchronous_behavior_of_outlet_glaciers_feeding_godthabsfjord_nuup_kangerlua_and_the_triggering_of_narsap_sermias_retreat_in_sw_greenland.pdf http://www.scopus.com/inward/record.url?scp=85014634551&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-49.750,-49.750,64.683,64.683) |
geographic |
Greenland Narsap Sermia |
geographic_facet |
Greenland Narsap Sermia |
genre |
glacier Greenland Journal of Glaciology Tidewater |
genre_facet |
glacier Greenland Journal of Glaciology Tidewater |
op_source |
Motyka , R J , Cassotto , R , Truffer , M , Kjeldsen , K , van As , D , Korsgaard , N J , Fahnestock , M , Howat , I , Langen , P L , Mortensen , J , Lennert , K & Rysgaard , S 2017 , ' Asynchronous behavior of outlet glaciers feeding Godthabsfjord (Nuup Kangerlua) and the triggering of Narsap Sermia's retreat in SW Greenland ' , Journal of Glaciology , vol. 63 , no. 238 , pp. 288-308 . https://doi.org/10.1017/jog.2016.138 , https://doi.org/10.1017/jog.2016.138 |
op_relation |
https://pure.au.dk/portal/en/publications/8f328e04-5d41-4f7d-be83-c89ca14f8ce7 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2016.138 |
container_title |
Journal of Glaciology |
container_volume |
63 |
container_issue |
238 |
container_start_page |
288 |
op_container_end_page |
308 |
_version_ |
1802644480523763712 |