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Moored current meter measurements in the Atlantic North Equatorial Countercurrent during 1983
Author(s) -
Richardson P. L.
Publication year - 1984
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl011i008p00749
Subject(s) - countercurrent exchange , current meter , geology , current (fluid) , amplitude , climatology , oceanography , atmospheric sciences , physics , quantum mechanics , thermodynamics
Current meters were moored at depths of 20, 50, 75 and 150 m near 6N, 28W from February 25 to September 13, 1983. From February to May the low frequency zonal velocity was slow and westward. From May to September the zonal velocity was eastward with peak (low passed) speeds up to 60 cm sec −1 . During July the eastward flow was approximately 40 cm sec −1 at all four depths. The surface and subsurface North Equatorial Countercurrent disappeared on a seasonal basis during 1983. Strong fluctuations were observed with periods in the bands 1‐2 months and 4‐5 days. The amplitude of these fluctuations appeared to be maximum during the period of swift eastward Countercurrent flow.