Voituriez B. auteur aut IRD Herbland Alain auteur aut IRD text bookSection fre text/pdf reformatted digital access All the high-productive systems of the Eastern tropical Atlantic between 20°N and 15°S - coastal upwelling, equatorial upwelling, and thermal domes-are partly controlled by the subsuperficial equatorial countercurrent system, which feeds all of them with Southern Atlantic Central Water. However, the enrichment processes in the systems are quite different, and thus the structures differ from one another. Two types have to be considered : 1) the quasi geostrophic ones which are two-layered systems belonging to the "typical tropical situations", where the primary production is controlled by the depth of the nitraciline; 2) the systems including coastal upwelling and equatorial divergence in summer, where the warm nitrate-depleted mixed layer is absent. (D'après résumé d'auteur) specialized COURANT EQUATORIAL CONTRECOURANT UPWELLING COURANT GEOSTROPHIQUE PRODUCTION PRIMAIRE GOLFE DE GUINEE ATLANTIQUE TROPICAL 032DYNEAU 180 107-123 Copenhague CIEM 1982 Symposium on the Canary Student : Studies of an Upwelling System, Las Palmas (ESP), 1978/03/11-14 https://www.documentation.ird.fr/hor/fdi:42794 [F B42794] https://www.documentation.ird.fr/hor/fdi:42794 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_37-38/42794.pdf IRD - Base Horizon / Pleins textes 1995-11-13 2006-05-27 fdi:42794 fre