FN Archimer Export Format PT J TI Zonal intermediate currents in the equatorial Atlantic Ocean BT AF OLLITRAULT, Michel LANKHORST, Matthias FRATANTONI, David RICHARDSON, Philip ZENK, Walter AS 1:1;2:2;3:3;4:3;5:2; FF 1:PDG-DOP-DCB-OPS-LPO;2:;3:;4:;5:; C1 IFREMER, Ctr Brest, F-29280 Plouzane, France. Leibniz Inst Meereswissensch, GEOMAR, D-24105 Kiel, Germany. Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA. C2 IFREMER, FRANCE IFM GEOMAR, GERMANY WOODS HOLE, USA SI BREST SE PDG-DOP-DCB-OPS-LPO IN WOS Ifremer jusqu'en 2018 copubli-europe copubli-int-hors-europe IF 2.602 TC 40 UR https://archimer.ifremer.fr/doc/2006/publication-1112.pdf LA English DT Article DE ;Seasonal fluctuations;Float data;Zonal current;Antarctic intermediate Water;Equatorial Atlantic ocean AB Acoustic float data collected near 800 m depth, are used to map zonal mean currents within the Antarctic Intermediate Water (AAIW) tongue in the equatorial Atlantic. Alternating zonal jets of 2° latitudinal width are revealed between 6°S and 6°N. Displacements from profiling floats drifting near 1000 m depth, also reveal similar zonal jets at the base of the AAIW layer. The strongest jets (15 cm s−1 peak) are found at 4°S, 2°S, 0°, 2°N and 4°N. They are coherent longitudinally over order of 3000 km and, poleward of 1°S and 1°N, generally coherent vertically between 800 m and 1000 m. Large seasonal fluctuations exist at both levels: within 1° of equator, AAIW at 800 m flows westward (8 cm s−1 mean) in boreal summer and fall but eastward (3 cm s−1 mean) in winter, whereas the flow at 1000 m is eastward in late fall and winter. PY 2006 PD MAR SO Geophysical Research Letters SN 0094-8276 PU American Geophysical Union VL 33 UT 000236269100007 DI 10.1029/2005GL025368 ID 1112 ER EF