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,...
| Published in: | Geophysical Research Letters |
|---|---|
| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
2006
|
| Subjects: | |
| Online Access: | https://pure.uhi.ac.uk/en/publications/900bd25a-004f-4f6e-9f4f-78a3aa851567 https://doi.org/10.1029/2005GL025131 |
| Summary: | 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. |
|---|