Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations
The dynamic response of High Arctic glaciers to increased runoff in a warming climate remains poorly understood. We analyze a 10-year record of continuous velocity data collected at multiple sites on Nordenskiöldbreen, Svalbard, and study the connection between ice flow and runoff within and between...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/364961 2023-11-12T04:11:31+01:00 Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations van Pelt, Ward J.J. Pohjola, Veijo A. Pettersson, Rickard Ehwald, Lena E. Reijmer, Carleen H. Boot, W Jakobs, Constantijn L. Sub Dynamics Meteorology Sub Algemeen Marine & Atmospheric Res Marine and Atmospheric Research 2018-05-28 image/pdf https://dspace.library.uu.nl/handle/1874/364961 en eng 0094-8276 https://dspace.library.uu.nl/handle/1874/364961 info:eu-repo/semantics/OpenAccess Climate change Glacier dynamics High Arctic Runoff Geophysics Earth and Planetary Sciences(all) Article 2018 ftunivutrecht 2023-11-01T23:17:13Z The dynamic response of High Arctic glaciers to increased runoff in a warming climate remains poorly understood. We analyze a 10-year record of continuous velocity data collected at multiple sites on Nordenskiöldbreen, Svalbard, and study the connection between ice flow and runoff within and between seasons. During the melt season, the sensitivity of ice motion to runoff at sites in the ablation and lower accumulation zone drops by a factor of 3 when cumulative runoff exceeds a local threshold, which is likely associated with a transition from inefficient (distributed) to efficient (channelized) drainage. Average summer (June-August) velocities are found to increase with summer ablation, while subsequent fall (September-November) velocities decrease. Spring (March-May) velocities are largely insensitive to summer ablation, which suggests a short-lived impact of summer melt on ice flow during the cold season. The net impact of summer ablation on annual velocities is found to be insignificant. Article in Journal/Newspaper Arctic Climate change glacier Svalbard Utrecht University Repository Arctic Nordenskiöldbreen ENVELOPE(17.166,17.166,78.676,78.676) Svalbard |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Climate change Glacier dynamics High Arctic Runoff Geophysics Earth and Planetary Sciences(all) |
spellingShingle |
Climate change Glacier dynamics High Arctic Runoff Geophysics Earth and Planetary Sciences(all) van Pelt, Ward J.J. Pohjola, Veijo A. Pettersson, Rickard Ehwald, Lena E. Reijmer, Carleen H. Boot, W Jakobs, Constantijn L. Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
topic_facet |
Climate change Glacier dynamics High Arctic Runoff Geophysics Earth and Planetary Sciences(all) |
description |
The dynamic response of High Arctic glaciers to increased runoff in a warming climate remains poorly understood. We analyze a 10-year record of continuous velocity data collected at multiple sites on Nordenskiöldbreen, Svalbard, and study the connection between ice flow and runoff within and between seasons. During the melt season, the sensitivity of ice motion to runoff at sites in the ablation and lower accumulation zone drops by a factor of 3 when cumulative runoff exceeds a local threshold, which is likely associated with a transition from inefficient (distributed) to efficient (channelized) drainage. Average summer (June-August) velocities are found to increase with summer ablation, while subsequent fall (September-November) velocities decrease. Spring (March-May) velocities are largely insensitive to summer ablation, which suggests a short-lived impact of summer melt on ice flow during the cold season. The net impact of summer ablation on annual velocities is found to be insignificant. |
author2 |
Sub Dynamics Meteorology Sub Algemeen Marine & Atmospheric Res Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
van Pelt, Ward J.J. Pohjola, Veijo A. Pettersson, Rickard Ehwald, Lena E. Reijmer, Carleen H. Boot, W Jakobs, Constantijn L. |
author_facet |
van Pelt, Ward J.J. Pohjola, Veijo A. Pettersson, Rickard Ehwald, Lena E. Reijmer, Carleen H. Boot, W Jakobs, Constantijn L. |
author_sort |
van Pelt, Ward J.J. |
title |
Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
title_short |
Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
title_full |
Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
title_fullStr |
Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
title_full_unstemmed |
Dynamic Response of a High Arctic Glacier to Melt and Runoff Variations |
title_sort |
dynamic response of a high arctic glacier to melt and runoff variations |
publishDate |
2018 |
url |
https://dspace.library.uu.nl/handle/1874/364961 |
long_lat |
ENVELOPE(17.166,17.166,78.676,78.676) |
geographic |
Arctic Nordenskiöldbreen Svalbard |
geographic_facet |
Arctic Nordenskiöldbreen Svalbard |
genre |
Arctic Climate change glacier Svalbard |
genre_facet |
Arctic Climate change glacier Svalbard |
op_relation |
0094-8276 https://dspace.library.uu.nl/handle/1874/364961 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782330591343017984 |