Deep mesoscale eddies in the Canada Basin, Arctic Ocean
Article first published online: 17 OCT 2012
©2012. American Geophysical Union. All Rights Reserved.
Geophysical Research Letters
Volume 39, Issue 20, 28 October 2012
How to Cite
2012), Deep mesoscale eddies in the Canada Basin, Arctic Ocean, Geophys. Res. Lett., 39, L20602, doi:10.1029/2012GL053025., and (
- Issue published online: 17 OCT 2012
- Article first published online: 17 OCT 2012
- Manuscript Accepted: 13 SEP 2012
- Manuscript Revised: 12 SEP 2012
- Manuscript Received: 12 JUL 2012
- mesoscale eddies;
 Numerous eddies have been identified in a seven year time series of mooring observations in the Canada Basin, Arctic Ocean. We focus on a series of deep eddies centered at ∼1200 m depth, and occupying up to 1500 m of the water column. The deep eddies are found to be spatially localized, only ever being observed at one of four mooring sites of the Beaufort Gyre Observing System in the Canada Basin. However, despite only a few previously reported observations of deep eddies in the Arctic Ocean, we find that they are the most prevalent eddy-type at this location. Based on this observation, together with an analysis of the temperature-salinity structure, and the exclusively anticyclonic rotation of the deep eddies, we hypothesize that they are formed by a density-driven outflow from the Chukchi Borderland region. We also describe a simple analytical model to explain the observed vertical scales of the eddies.