Moum J. N. auteur aut IRD Hughes K. G. auteur aut IRD Shroyer E. L. auteur aut IRD Smyth W. D. auteur aut IRD Cherian D. auteur aut IRD Warner S. J. auteur aut IRD Bourlès Bernard auteur aut IRD Brandt P. auteur aut IRD Dengler M. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Multiyear turbulence measurements from oceanographic moorings in equatorial Atlantic and Pacific cold tongues reveal similarities in deep cycle turbulence (DCT) beneath the mixed layer (ML) and above the Equatorial Undercurrent (EUC) core. Diurnal composites of turbulence kinetic energy dissipation rate, epsilon, clearly show the diurnal cycles of turbulence beneath the ML in both cold tongues. Despite differences in surface forcing, EUC strength and core depth DCT occurs, and is consistent in amplitude and timing, at all three sites. Time-mean values of epsilon at 30 m depth are nearly identical at all three sites. Variations of averaged values of epsilon in the deep cycle layer below 30 m range to a factor of 10 between sites. A proposed scaling in depth that isolates the deep cycle layers and of epsilon by the product of wind stress and current shear collapses vertical profiles at all sites to within a factor of 2. specialized equator diurnal turbulence mixing scaling timeseries ATLANTIQUE PACIFIQUE ZONE EQUATORIALE 032 49 8 e2021GL097345 [ p.] 2022 0094-8276 https://www.documentation.ird.fr/hor/fdi:010084717 10.1029/2021gl097345 0094-8276 [F B010084717] https://www.documentation.ird.fr/hor/fdi:010084717 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2022-06/010084717.pdf IRD - Base Horizon / Pleins textes 2022-06-03 2022-06-03 fdi:010084717 fre