Physics
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998adspr..22.1557h&link_type=abstract
Advances in Space Research, Volume 22, Issue 11, p. 1557-1560.
Physics
Scientific paper
Baroclinic Rossby waves play an important role in ocean circulation. Theoretical studies have shown that, as they propagate away from eastern boundaries, they leave behind them `shadow zones' in which the wind-driven circulation is confined to the surface layers. In a stationary ocean, long, non-dispersive waves travel westwards, but it is possible (especially at high latitudes) for the mean ocean flow to overwhelm the wave group velocity and force eastward propagation in places. This has been shown in an eddy-resolving simulation of the Southern Ocean (FRAM) to result in striking, sharply-defined areas in which eastward and westward wave propagation occur, eastward propagation being confined to the Antarctic Circumpolar Current (ACC). Such eastward-propagating waves have been detected in the real Southern Ocean using altimetry from TOPEX/POSEIDON, and in this paper results are presented using ERS-1 altimetry, which gives much improved spatial resolution.
Carnochan S. A.
Hughes Chris W.
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