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

Publication Type Publication
Publication date 1994
Language English
Full Text Open accesshttp://archimer.ifremer.fr/doc/00098/20890/18504.pdf (0.82 Mo)
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/

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