Merle Jacques, Rotschi Henri, Voituriez Bruno. (1969). Zonal circulation in the Tropical Western South Pacific at 170°E. Bulletin of the Japanese Society of Fisheries Oceanography, (No spécial), p. 91-98. ISSN 0182-0745.
Titre du document
Zonal circulation in the Tropical Western South Pacific at 170°E
Année de publication
1969
Type de document
Article
Auteurs
Merle Jacques, Rotschi Henri, Voituriez Bruno
Source
Bulletin of the Japanese Society of Fisheries Oceanography, 1969,
(No spécial), p. 91-98 ISSN 0182-0745
Recent work made in the Tropical Western South Pacific along 170°E indicates that between 20°S and 5°S there are two permanent eastward countercurrents. One centered at about 9°S is the South Equatorial Countercurrent; it transports low salinity water which has also a minimum oxygen concentration and is nutrient rich. The other is centered near 17°30'S; its water has a low salinity but a high content in oxygen and low nutrient concentrations. The westward flow between them is composed of high salinity, highly oxygenated water. No seasonal variations of the intensity of the meridional extension, of the volume transport of these currents have been observed and it appears clearly that the South Equatorial Countercurrent is distinct from the current observed on the 125 cl/t surface. This zonal circulation can induce vertical displacements of water, the effect of which are seen on the nutrients vertical distribution. Between 9°S and 14°S and near 20°S there should be two zones where the productivity is more or less permanently higher than in the adjacent waters. (Résumé d'auteur)
Plan de classement
Dynamique des eaux [032DYNEAU]
Descripteurs
CIRCULATION OCEANIQUE ; CIRCULATION ZONALE ; SOUS COURANT ; SALINITE ; OXYGENE DISSOUS ; SEL NUTRITIF
