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South equatorial current of the indian-ocean - a 50-day oscillation

Publication Type :
Publication
Publication date :
1994
Language :
English
Author(s) :
Heywood Kj, Barton Ed, Allen Gl
Affiliation(s) :
UNIV COLL N WALES,SCH OCEAN SCI,MENAI BRIDGE LL59 5EY,GWYNEDD,WALES
Source :
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1994 , Vol. 17 , N. 3 , P. 255-261
WOS© Times Cited :
8
Keyword(s) :
50-DAY OSCILLATION, ROSBBY WAVE, INDIAN OCEAN, CURRENTS, CZCS
Abstract :
Observations of a fifty-day oscillation in the meridional component of the South Equatorial Current in the Western Indian Ocean are presented. Currents measured in 4000 m of water close to the atoll of Aldabra (46-degrees-E, 9-degrees-S) reveal the oscillation throughout the water column to a depth of 3 000 m. Further evidence of the oscillation is presented in shipboard Acoustic Doppler Current Profiler (ADCP) sections and in Coastal Zone Color Scanner (CZCS) imagery. The oscillations are consistent with a zonally propagating Rossby wave caused by shear instability in the zonal flow of the South Equatorial Current.
How to cite this document:

Heywood Kj, Barton Ed, Allen Gl (1994). South equatorial current of the indian-ocean - a 50-day oscillation. Oceanologica Acta, 17(3), 255-261. Open Access version : http://archimer.ifremer.fr/doc/00098/20890/