A new view of the underside of Arctic sea ice
A new view of the underside of Arctic sea ice
The Autosub-II autonomous underwater vehicle (AUV), operating off NE Greenland in August 2004, obtained the first successful swath sonar measurements under sea ice, showing in unprecedented detail the three-dimensional nature of the under-ice surface. The vehicle, operated from RRS James Clark Ross, obtained more than 450 track-km of under-ice multibeam data. We show imagery from first- and multiyear ice, including young ridges, old hummocks and undeformed melting ice. In addition, we show how the combination of other on-board sensors enabled the vehicle to obtain detailed information about seabed topography, water structure and current fields in an exploratory mode within a region which is seldom visited because of difficult year-round ice conditions. This included identification of a new current regime in the Norske Trough.
L04501
Wadhams, P.
b08bb3c6-f07f-4b6b-a419-2e2196e8cbae
Wilkinson, J.P.
7c4c1749-06a6-4d91-b846-91007c8f350d
McPhail, S.D.
58ac4bcd-26a6-4845-8e81-6d6a8f18aed7
2006
Wadhams, P.
b08bb3c6-f07f-4b6b-a419-2e2196e8cbae
Wilkinson, J.P.
7c4c1749-06a6-4d91-b846-91007c8f350d
McPhail, S.D.
58ac4bcd-26a6-4845-8e81-6d6a8f18aed7
Wadhams, P., Wilkinson, J.P. and McPhail, S.D.
(2006)
A new view of the underside of Arctic sea ice.
Geophysical Research Letters, 33 (4), .
(doi:10.1029/2005GL025131).
Abstract
The Autosub-II autonomous underwater vehicle (AUV), operating off NE Greenland in August 2004, obtained the first successful swath sonar measurements under sea ice, showing in unprecedented detail the three-dimensional nature of the under-ice surface. The vehicle, operated from RRS James Clark Ross, obtained more than 450 track-km of under-ice multibeam data. We show imagery from first- and multiyear ice, including young ridges, old hummocks and undeformed melting ice. In addition, we show how the combination of other on-board sensors enabled the vehicle to obtain detailed information about seabed topography, water structure and current fields in an exploratory mode within a region which is seldom visited because of difficult year-round ice conditions. This included identification of a new current regime in the Norske Trough.
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Published date: 2006
Organisations:
National Oceanography Centre,Southampton
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Local EPrints ID: 44203
URI: http://eprints.soton.ac.uk/id/eprint/44203
ISSN: 0094-8276
PURE UUID: 1e182696-3133-49d4-9fe8-4aac95bfab3d
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Date deposited: 19 Feb 2007
Last modified: 15 Mar 2024 09:01
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Author:
P. Wadhams
Author:
J.P. Wilkinson
Author:
S.D. McPhail
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