Physics
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3515501l&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 15, CiteID L15501
Physics
3
Cryosphere: Sea Ice (4540), Cryosphere: Dynamics, Cryosphere: Polynas (4540), Oceanography: Physical: Ice Mechanics And Air/Sea/Ice Exchange Processes (0700, 0750, 0752, 0754), Oceanography: Physical: Topographic/Bathymetric Interactions
Scientific paper
A distinctive halo of sea ice deformation was observed above the Maud Rise seamount in the eastern Weddell Sea in the winter of 2005. The deformation halo is coincident with a halo of low mean ice concentration that is often observed in the region. Monthly mean ice vorticity estimates for the months July through November reveal the deformation zone most clearly in an arc about 100 km northwest of the seamount where there is a strong gradient in the bathymetry at depths of 3000-5000 m. The deformation was computed from satellite-based ice motion vectors derived from Envisat Synthetic Aperture Radar backscatter images. The deformation halo is evidence of a Taylor cap circulation over the seamount, which has been described and analyzed with modeling studies and concurrent oceanographic observations obtained during an extensive field campaign.
de Steur L.
Kwok Ron
Lindsay Ronald W.
Meier Walt
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