%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Gouriou, Yves
%A Bourlès, Bernard
%A Mercier, H.
%A Chuchla, Rémy
%T Deep jets in the equatorial Atlantic Ocean
%D 1999
%L fdi:010019664
%G ENG
%J Journal of Geophysical Research
%@ 0148-0227
%K COURANT PROFOND ; VITESSE ; MESURE ; PROFIL VERTICAL ; VARIATION SAISONNIERE ; INVERSION
%K ATLANTIQUE EQUATORIAL
%N C9
%P 21,217-21,226
%R 10.1029/1999JC900057
%U https://www.documentation.ird.fr/hor/fdi:010019664
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_51-52/010019664.pdf
%V 104
%W Horizon (IRD)
%X Deep velocity profiles taken in the equatorial Atlantic Ocean show equatorially trapped deep jets with similar features to those of the Indian and Pacific Oceans : a zonal velocity of the order of 10 to 20 cm/s and a meridional scale of 1°. In the Pacific and Indian Oceans, the zonal extent of the jets is at least 15° of longitude. Owing to the lack of synoptic measurements, we have no information on the zonal scale in the Atlantic Ocean, but we present here zonal velocity profiles, made at a 16-month interval, that have identical baroclinic structure in the western (35°W) and central basin (13°W). The Atlantic jets have a vertical scale larger (400-600 m) than those observed in the Pacific Ocean (250-400 m). Our measurements confirm the opposite directions of the jets for different seasons in the Atlantic Ocean. Furthermore, for a given season, the vertical profiles of zonal velocity at 35°W-0° are astonishingly similar at a 5-year interval. As in the Pacific and Indian Oceans, the jets are embedded in a large-vertical-scale current that changes direction with time. The few profiles available in the equatorial Atlantic Ocean suggest a seasonal reversal of the jets, but neither this nor the temporal variability of the large-scale current has been adequately resolved. (Résumé d'auteur)
%$ 032DYNEAU