Changes in the marine-terminating glaciers of central east Greenland, 2000–2010
Marine-terminating outlet glaciers of the Greenland Ice Sheet have undergone substantial changes over the past decade. The synchronicity of these changes suggest a regional external forcing, such as changes in coastal ocean heat transport and/or increased surface melt and subglacial runoff. A distin...
Published in: | The Cryosphere |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Copernicus Publications
2012
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00026178 2023-05-15T16:03:35+02:00 Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 Walsh, K. M. Howat, I. M. Ahn, Y. Enderlin, E. M. 2012-02 electronic https://doi.org/10.5194/tc-6-211-2012 https://noa.gwlb.de/receive/cop_mods_00026178 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00026133/tc-6-211-2012.pdf https://tc.copernicus.org/articles/6/211/2012/tc-6-211-2012.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-6-211-2012 https://noa.gwlb.de/receive/cop_mods_00026178 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00026133/tc-6-211-2012.pdf https://tc.copernicus.org/articles/6/211/2012/tc-6-211-2012.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2012 ftnonlinearchiv https://doi.org/10.5194/tc-6-211-2012 2022-02-08T22:49:21Z Marine-terminating outlet glaciers of the Greenland Ice Sheet have undergone substantial changes over the past decade. The synchronicity of these changes suggest a regional external forcing, such as changes in coastal ocean heat transport and/or increased surface melt and subglacial runoff. A distinct contrast in rates of ice front retreat has been observed between glaciers north and south of 69° N latitude on along the East Greenland coast. This latitude corresponds with the northward limit of subtropical waters carried by the Irminger Current, suggesting variability in ocean heat transport as the dominant forcing. Glacier surging, however, is yet another mechanism of change in this region. In order to provide further spatial and temporal constraint on glacier change across this important oceanographic transition zone, we construct time series of thinning, retreat and flow speed of 37 marine-terminating glaciers along the central east Greenland coast from 2000 to 2010. We assess this dataset for spatial and temporal patterns that may elucidate the mechanisms of glacier change. We confirm that glacial retreat, dynamical thinning, and acceleration have been more pronounced south of 69° N, with a high degree of variability along the Blosseville Coast and little inter-annual change in Scoresby Sound. Our results support the conclusion that variability in coastal ocean heat transport is the primary driver of regional glacier change, but that local factors, such as surging and/or individual glacier morphology, are overprinted on this regional signal. Article in Journal/Newspaper East Greenland glacier Greenland Ice Sheet Scoresby Sound The Cryosphere Niedersächsisches Online-Archiv NOA Greenland Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) The Cryosphere 6 1 211 220 |
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Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Walsh, K. M. Howat, I. M. Ahn, Y. Enderlin, E. M. Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
topic_facet |
article Verlagsveröffentlichung |
description |
Marine-terminating outlet glaciers of the Greenland Ice Sheet have undergone substantial changes over the past decade. The synchronicity of these changes suggest a regional external forcing, such as changes in coastal ocean heat transport and/or increased surface melt and subglacial runoff. A distinct contrast in rates of ice front retreat has been observed between glaciers north and south of 69° N latitude on along the East Greenland coast. This latitude corresponds with the northward limit of subtropical waters carried by the Irminger Current, suggesting variability in ocean heat transport as the dominant forcing. Glacier surging, however, is yet another mechanism of change in this region. In order to provide further spatial and temporal constraint on glacier change across this important oceanographic transition zone, we construct time series of thinning, retreat and flow speed of 37 marine-terminating glaciers along the central east Greenland coast from 2000 to 2010. We assess this dataset for spatial and temporal patterns that may elucidate the mechanisms of glacier change. We confirm that glacial retreat, dynamical thinning, and acceleration have been more pronounced south of 69° N, with a high degree of variability along the Blosseville Coast and little inter-annual change in Scoresby Sound. Our results support the conclusion that variability in coastal ocean heat transport is the primary driver of regional glacier change, but that local factors, such as surging and/or individual glacier morphology, are overprinted on this regional signal. |
format |
Article in Journal/Newspaper |
author |
Walsh, K. M. Howat, I. M. Ahn, Y. Enderlin, E. M. |
author_facet |
Walsh, K. M. Howat, I. M. Ahn, Y. Enderlin, E. M. |
author_sort |
Walsh, K. M. |
title |
Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
title_short |
Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
title_full |
Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
title_fullStr |
Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
title_full_unstemmed |
Changes in the marine-terminating glaciers of central east Greenland, 2000–2010 |
title_sort |
changes in the marine-terminating glaciers of central east greenland, 2000–2010 |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/tc-6-211-2012 https://noa.gwlb.de/receive/cop_mods_00026178 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00026133/tc-6-211-2012.pdf https://tc.copernicus.org/articles/6/211/2012/tc-6-211-2012.pdf |
long_lat |
ENVELOPE(162.750,162.750,-66.567,-66.567) |
geographic |
Greenland Scoresby |
geographic_facet |
Greenland Scoresby |
genre |
East Greenland glacier Greenland Ice Sheet Scoresby Sound The Cryosphere |
genre_facet |
East Greenland glacier Greenland Ice Sheet Scoresby Sound The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-6-211-2012 https://noa.gwlb.de/receive/cop_mods_00026178 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00026133/tc-6-211-2012.pdf https://tc.copernicus.org/articles/6/211/2012/tc-6-211-2012.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-6-211-2012 |
container_title |
The Cryosphere |
container_volume |
6 |
container_issue |
1 |
container_start_page |
211 |
op_container_end_page |
220 |
_version_ |
1766399260127920128 |