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Free Content Observations of the horizontal separation of the salinity core and the current core in the Atlantic Equatorial Undercurrent

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Abstract:

From January to June 1979 the R. V. Meteor surveyed the central equatorial Atlantic on a line along 22W from 2S to 3N. By means of CTD and horizontal deflection measurements of a towed undulating instrument, the "Delphin," a time series of the horizontal location of the velocity core of the Equatorial Undercurrent and its related salinity maximum could be obtained. The time interval of observations between the 11 "Delphin" sections ranged from 5 to 30 days. In the mean the salinity maximum is located 30 km south of the velocity maximum. The separation distance depends on the meridional location of the cores and is highest when the cores are farthest to the north. The separation can be explained by asymmetric vertical erosion of the salinity core. The erosion is stronger at the northern flank. This is due to the presence of a tongue of low salinity water which originates by modification of South Equatorial Current water with Gulf of Guinea water.

Document Type: Research Article

DOI: http://dx.doi.org/10.1357/002224086788401648

Publication date: November 1, 1986

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  • The Journal of Marine Research publishes peer-reviewed research articles covering a broad array of topics in physical, biological and chemical oceanography. Articles that deal with processes, as well as those that report significant observations, are welcome. In the area of biology, studies involving coupling between ecological and physical processes are preferred over those that report systematics. Authors benefit from thorough reviews of their manuscripts, where an attempt is made to maximize clarity. The time between submission and publication is kept to a minimum; there is no page charge.
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