UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Vertical mixing at intermediate depths in the Arctic boundary current

Lenn, YD; Wiles, PJ; Torres-Valdes, S; Abrahamsen, EP; Rippeth, TP; Simpson, JH; ... Kirillov, S; + view all (2009) Vertical mixing at intermediate depths in the Arctic boundary current. Geophysical Research Letters , 36 , Article L05601. 10.1029/2008GL036792. Green open access

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1558Kb

Abstract

Microstructure and hydrographic observations, during September 2007 in the boundary current on the East Siberian continental slope, document upper ocean stratification and along-stream water mass changes. A thin warm surface layer overrides a shallow halocline characterized by a similar to 40-m thick temperature minimum layer beginning at similar to 30 m depth. Below the halocline, well-defined thermohaline diffusive staircases extended downwards to warm Atlantic Water intrusions found at 200-800 m depth. Observed turbulent eddy kinetic energy dissipations are extremely low (epsilon < 10(-6) W m(-3)), such that double diffusive convection dominates the vertical mixing in the upper-ocean. The diffusive convection heat fluxes F-H(dc) similar to 1 W m(-2), are an order of magnitude too small to account for the observed along-stream cooling of the boundary current. Our results implicate circulation patterns and the influence of shelf waters in the evolution of the boundary current waters. Citation: Lenn, Y. D., et al. (2009), Vertical mixing at intermediate depths in the Arctic boundary current, Geophys. Res. Lett., 36, L05601, doi:10.1029/2008GL036792.

Type:Article
Title:Vertical mixing at intermediate depths in the Arctic boundary current
Open access status:An open access version is available from UCL Discovery
DOI:10.1029/2008GL036792
Publisher version:http://dx.doi.org/10.1029/2008GL036792
Language:English
Additional information:Copyright 2009 by the American Geophysical Union
Keywords:OCEAN, TURBULENCE, BASIN, FLOW, SEAS
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Earth Sciences

View download statistics for this item

Archive Staff Only: edit this record