Mixing across the Arctic Ocean: Microstructure observations during the Beringia 2005 Expedition
Article first published online: 30 APR 2008
Copyright 2008 by the American Geophysical Union.
Geophysical Research Letters
Volume 35, Issue 8, April 2008
How to Cite
2008), Mixing across the Arctic Ocean: Microstructure observations during the Beringia 2005 Expedition, Geophys. Res. Lett., 35, L08606, doi:10.1029/2008GL033532., and (
- Issue published online: 30 APR 2008
- Article first published online: 30 APR 2008
- Manuscript Accepted: 27 MAR 2008
- Manuscript Received: 6 FEB 2008
 Turbulent-scale temperature and conductivity were measured during the pan-arctic Beringia 2005 Expedition. The rates of dissipation of thermal variance and diapycnal diffusivities are calculated along a section from Alaska to the North Pole, across deep flat basins (Canada and Makarov Basins) and steep ridges (Alpha-Mendeleev and Lomonosov Ridges). The mixing rates are observed to be small relative to lower latitudes but also remarkably non-uniform. Relatively elevated turbulence is found over deep topography, confirming the dominant role of bottom-generated internal waves. Measured patterns of mixing in the Arctic are also associated with other mechanisms, such as double-diffusive structures and deep overflows. A better knowledge of the distribution of mixing is essential to understand the dynamics of the changing Arctic environment.