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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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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.

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Document Type: Research Article

Publication date: November 1, 1986

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  • The Journal of Marine Research, one of the oldest journals in American marine science, 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. Biological studies involving coupling between ecological and physical processes are preferred over those that report systematics. The editors strive always to serve authors and readers in the academic oceanographic community by publishing papers vital to the marine research in the long and rich tradition of the Sears Foundation for Marine Research. We welcome you to the Journal of Marine Research.
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