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Detailed Reference Information |
Ollitrault, M., Lankhorst, M., Fratantoni, D., Richardson, P. and Zenk, W. (2006). Zonal intermediate currents in the equatorial Atlantic Ocean. Geophysical Research Letters 33: doi: 10.1029/2005GL025368. issn: 0094-8276. |
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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. |
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Abstract![](/images/icons/spacer.gif) |
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Keywords
Oceanography, General, Equatorial oceanography, Oceanography, General, Diurnal, seasonal, and annual cycles, Oceanography, Physical, Currents, Oceanography, Physical, Fronts and jets, Oceanography, Physical, General circulation (1218, 1222) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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