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| Heywood, Kj; Barton, Ed; Allen, Gl. |
| 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. |
| Tipo: Text |
Palavras-chave: 50-DAY OSCILLATION; ROSBBY WAVE; INDIAN OCEAN; CURRENTS; CZCS. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20890/18504.pdf |
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| Colin, C; Bourles, Bernard. |
| Pegasus current measurements carried out along a section located off French Guiana are presented; the section was repeated five times from September 1989 to June 1991 during the NOE (region Nord-Ouest equatoriale)/STACS (Sub Tropical Atlantic Climate Studies) cruises on board the NOAA (National Oceanographic and Atmospheric Administration) research vessels. The data (vertical and horizontal distributions) show, as suggested by earliest observations, the presence of different currents. At the surface, and in winter, the North Brazil Current (NBC) flows northwestward (positive), is strong (120 cm/s), confined in the first 250 m, coastally trapped (within 250 km) and fed by offshore waters; in summer the NBC strengthens (the velocity increases to 150 cm/s),... |
| Tipo: Text |
Palavras-chave: CURRENTS; TEMPERATURE; SALINITY; WESTERN BOUNDARY; EQUATORIAL ATLANTIC. |
| Ano: 1994 |
URL: http://archimer.ifremer.fr/doc/00098/20881/18495.pdf |
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