Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland
We document changes for Mittivakkat Gletscher, the peripheral glacier in Greenland with the longest field-based observed mass-balance and surface velocity time series. Between 1986 and 2011, this glacier changed by -15 in mean ice thickness and -30 in volume. We attribute these changes to summer war...
Published in: | Journal of Glaciology |
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Cambridge University Press (CUP) for International Glaciological Society
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Online Access: | https://eprints.lincoln.ac.uk/id/eprint/26017/ https://doi.org/10.3189/2013JoG13J017 |
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ftulincoln:oai:eprints.lincoln.ac.uk:26017 2023-05-15T16:21:04+02:00 Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland Mernild, S. H. Knudsen, N. T. Hoffman, M. J. Yde, J. C. Hanna, E. Lipscomb, W. H. Malmros, J. K. Fausto, R. S. 2013-08-01 https://eprints.lincoln.ac.uk/id/eprint/26017/ https://doi.org/10.3189/2013JoG13J017 unknown Cambridge University Press (CUP) for International Glaciological Society Mernild, S. H., Knudsen, N. T., Hoffman, M. J., Yde, J. C., Hanna, E., Lipscomb, W. H., Malmros, J. K. and Fausto, R. S. (2013) Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland. Journal of Glaciology, 59 (216). pp. 660-670. ISSN 0022-1430 doi:10.3189/2013JoG13J017 F330 Environmental Physics Article PeerReviewed 2013 ftulincoln https://doi.org/10.3189/2013JoG13J017 2022-03-02T20:07:06Z We document changes for Mittivakkat Gletscher, the peripheral glacier in Greenland with the longest field-based observed mass-balance and surface velocity time series. Between 1986 and 2011, this glacier changed by -15 in mean ice thickness and -30 in volume. We attribute these changes to summer warming and lower winter snow accumulation. Vertical strain compensated for �60 of the elevation change due to surface mass balance (SMB) in the lower part, and �25 in the upper part. The annual mean ice surface velocity changed by -30, which can be fully explained by the dynamic effect of ice thinning, within uncertainty. Mittivakkat Gletscher summer surface velocities were on average 50-60 above winter background values, and up to 160 higher during peak velocity events. Peak velocity events were accompanied by uplift of a few centimeters. Article in Journal/Newspaper glacier Greenland Journal of Glaciology University of Lincoln: Lincoln Repository Greenland Journal of Glaciology 59 216 660 670 |
institution |
Open Polar |
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University of Lincoln: Lincoln Repository |
op_collection_id |
ftulincoln |
language |
unknown |
topic |
F330 Environmental Physics |
spellingShingle |
F330 Environmental Physics Mernild, S. H. Knudsen, N. T. Hoffman, M. J. Yde, J. C. Hanna, E. Lipscomb, W. H. Malmros, J. K. Fausto, R. S. Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
topic_facet |
F330 Environmental Physics |
description |
We document changes for Mittivakkat Gletscher, the peripheral glacier in Greenland with the longest field-based observed mass-balance and surface velocity time series. Between 1986 and 2011, this glacier changed by -15 in mean ice thickness and -30 in volume. We attribute these changes to summer warming and lower winter snow accumulation. Vertical strain compensated for �60 of the elevation change due to surface mass balance (SMB) in the lower part, and �25 in the upper part. The annual mean ice surface velocity changed by -30, which can be fully explained by the dynamic effect of ice thinning, within uncertainty. Mittivakkat Gletscher summer surface velocities were on average 50-60 above winter background values, and up to 160 higher during peak velocity events. Peak velocity events were accompanied by uplift of a few centimeters. |
format |
Article in Journal/Newspaper |
author |
Mernild, S. H. Knudsen, N. T. Hoffman, M. J. Yde, J. C. Hanna, E. Lipscomb, W. H. Malmros, J. K. Fausto, R. S. |
author_facet |
Mernild, S. H. Knudsen, N. T. Hoffman, M. J. Yde, J. C. Hanna, E. Lipscomb, W. H. Malmros, J. K. Fausto, R. S. |
author_sort |
Mernild, S. H. |
title |
Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
title_short |
Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
title_full |
Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
title_fullStr |
Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
title_full_unstemmed |
Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland |
title_sort |
volume and velocity changes at mittivakkat gletscher, southeast greenland |
publisher |
Cambridge University Press (CUP) for International Glaciological Society |
publishDate |
2013 |
url |
https://eprints.lincoln.ac.uk/id/eprint/26017/ https://doi.org/10.3189/2013JoG13J017 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Journal of Glaciology |
genre_facet |
glacier Greenland Journal of Glaciology |
op_relation |
Mernild, S. H., Knudsen, N. T., Hoffman, M. J., Yde, J. C., Hanna, E., Lipscomb, W. H., Malmros, J. K. and Fausto, R. S. (2013) Volume and velocity changes at Mittivakkat Gletscher, southeast Greenland. Journal of Glaciology, 59 (216). pp. 660-670. ISSN 0022-1430 doi:10.3189/2013JoG13J017 |
op_doi |
https://doi.org/10.3189/2013JoG13J017 |
container_title |
Journal of Glaciology |
container_volume |
59 |
container_issue |
216 |
container_start_page |
660 |
op_container_end_page |
670 |
_version_ |
1766009091860201472 |