Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland.
Marine-terminating glaciers play a critical role in controlling Greenland's ice sheet mass balance. Their frontal margins interact vigorously with the ocean, but our understanding of this interaction is limited, in part, by a lack of bathymetry data. Here we present a multibeam echo sounding su...
Published in: | Geophysical Research Letters |
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American Geophysical Union
2016
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Online Access: | http://dro.dur.ac.uk/22666/ http://dro.dur.ac.uk/22666/1/22666.pdf https://doi.org/10.1002/2016GL067832 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:22666 2023-05-15T16:21:02+02:00 Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. Rignot, E. Fenty, I. Xu, Y. Cai, C. Velicogna, I. Ó Cofaigh, C. Dowdeswell, J. A. Weinrebe, W. Catania, G. Duncan, D. 2016-03-25 application/pdf http://dro.dur.ac.uk/22666/ http://dro.dur.ac.uk/22666/1/22666.pdf https://doi.org/10.1002/2016GL067832 unknown American Geophysical Union dro:22666 issn:0094-8276 issn: 1944-8007 doi:10.1002/2016GL067832 http://dro.dur.ac.uk/22666/ https://doi.org/10.1002/2016GL067832 http://dro.dur.ac.uk/22666/1/22666.pdf Rignot, E., Fenty, I., Xu, Y., Cai, C., Velicogna, I., Ó Cofaigh, C., Dowdeswell, J. A., Weinrebe, W., Catania, G. & Duncan, D. (2016). Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. Geophysical Research Letters 43(6): 2667-2674, 10.1002/2016GL067832. To view the published open abstract, go to https://doi.org/ and enter the DOI. Geophysical research letters, 2016, Vol.43(6), pp.2667-2674 [Peer Reviewed Journal] Article PeerReviewed 2016 ftunivdurham https://doi.org/10.1002/2016GL067832 2021-09-30T22:23:08Z Marine-terminating glaciers play a critical role in controlling Greenland's ice sheet mass balance. Their frontal margins interact vigorously with the ocean, but our understanding of this interaction is limited, in part, by a lack of bathymetry data. Here we present a multibeam echo sounding survey of 14 glacial fjords in the Uummannaq and Vaigat fjords, west Greenland, which extends from the continental shelf to the glacier fronts. The data reveal valleys with shallow sills, overdeepenings (>1300 m) from glacial erosion, and seafloor depths 100–1000 m deeper than in existing charts. Where fjords are deep enough, we detect the pervasive presence of warm, salty Atlantic Water (AW) (>2.5°C) with high melt potential, but we also find numerous glaciers grounded on shallow (<200 m) sills, standing in cold (<1°C) waters in otherwise deep fjords, i.e., with reduced melt potential. Bathymetric observations extending to the glacier fronts are critical to understand the glacier evolution. Article in Journal/Newspaper glacier Greenland Ice Sheet Uummannaq Durham University: Durham Research Online Greenland Vaigat ENVELOPE(-52.947,-52.947,70.200,70.200) Geophysical Research Letters 43 6 2667 2674 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
Marine-terminating glaciers play a critical role in controlling Greenland's ice sheet mass balance. Their frontal margins interact vigorously with the ocean, but our understanding of this interaction is limited, in part, by a lack of bathymetry data. Here we present a multibeam echo sounding survey of 14 glacial fjords in the Uummannaq and Vaigat fjords, west Greenland, which extends from the continental shelf to the glacier fronts. The data reveal valleys with shallow sills, overdeepenings (>1300 m) from glacial erosion, and seafloor depths 100–1000 m deeper than in existing charts. Where fjords are deep enough, we detect the pervasive presence of warm, salty Atlantic Water (AW) (>2.5°C) with high melt potential, but we also find numerous glaciers grounded on shallow (<200 m) sills, standing in cold (<1°C) waters in otherwise deep fjords, i.e., with reduced melt potential. Bathymetric observations extending to the glacier fronts are critical to understand the glacier evolution. |
format |
Article in Journal/Newspaper |
author |
Rignot, E. Fenty, I. Xu, Y. Cai, C. Velicogna, I. Ó Cofaigh, C. Dowdeswell, J. A. Weinrebe, W. Catania, G. Duncan, D. |
spellingShingle |
Rignot, E. Fenty, I. Xu, Y. Cai, C. Velicogna, I. Ó Cofaigh, C. Dowdeswell, J. A. Weinrebe, W. Catania, G. Duncan, D. Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
author_facet |
Rignot, E. Fenty, I. Xu, Y. Cai, C. Velicogna, I. Ó Cofaigh, C. Dowdeswell, J. A. Weinrebe, W. Catania, G. Duncan, D. |
author_sort |
Rignot, E. |
title |
Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
title_short |
Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
title_full |
Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
title_fullStr |
Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
title_full_unstemmed |
Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. |
title_sort |
bathymetry data reveal glaciers vulnerable to ice-ocean interaction in uummannaq and vaigat glacial fjords, west greenland. |
publisher |
American Geophysical Union |
publishDate |
2016 |
url |
http://dro.dur.ac.uk/22666/ http://dro.dur.ac.uk/22666/1/22666.pdf https://doi.org/10.1002/2016GL067832 |
long_lat |
ENVELOPE(-52.947,-52.947,70.200,70.200) |
geographic |
Greenland Vaigat |
geographic_facet |
Greenland Vaigat |
genre |
glacier Greenland Ice Sheet Uummannaq |
genre_facet |
glacier Greenland Ice Sheet Uummannaq |
op_source |
Geophysical research letters, 2016, Vol.43(6), pp.2667-2674 [Peer Reviewed Journal] |
op_relation |
dro:22666 issn:0094-8276 issn: 1944-8007 doi:10.1002/2016GL067832 http://dro.dur.ac.uk/22666/ https://doi.org/10.1002/2016GL067832 http://dro.dur.ac.uk/22666/1/22666.pdf |
op_rights |
Rignot, E., Fenty, I., Xu, Y., Cai, C., Velicogna, I., Ó Cofaigh, C., Dowdeswell, J. A., Weinrebe, W., Catania, G. & Duncan, D. (2016). Bathymetry data reveal glaciers vulnerable to ice-ocean interaction in Uummannaq and Vaigat glacial fjords, West Greenland. Geophysical Research Letters 43(6): 2667-2674, 10.1002/2016GL067832. To view the published open abstract, go to https://doi.org/ and enter the DOI. |
op_doi |
https://doi.org/10.1002/2016GL067832 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
6 |
container_start_page |
2667 |
op_container_end_page |
2674 |
_version_ |
1766009057919893504 |