Articles | Volume 21, issue 4
https://doi.org/10.5194/os-21-1589-2025
https://doi.org/10.5194/os-21-1589-2025
Research article
 | 
30 Jul 2025
Research article |  | 30 Jul 2025

Turbulent dissipation along contrasting internal tide paths off the Amazon shelf from AMAZOMIX

Fabius Kouogang, Ariane Koch-Larrouy, Jorge Magalhaes, Alex Costa da Silva, Daphne Kerhervé, Arnaud Bertrand, Evan Cervelli, Fernand Assene, Jean-François Ternon, Pierre Rousselot, James Lee, Marcelo Rollnic, and Moacyr Araujo

Data sets

AMAZOMIX cruise – Physical datasets P. Rousselot et al. https://doi.org/10.17882/97235

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Short summary
New research reveals that ocean mixing off the Amazon coast peaks not only near wave origins but also 230 km offshore, where different wave paths may intersect. This overlap likely forms strong solitary waves that intensify turbulence. Based on the AMAZOMIX-2021 cruise, which collected direct turbulence measurements alongside hydrographic data, the study quantifies dissipation and the relative contributions of tidal shear and large-scale shear. This mixing helps redistribute heat and nutrients, playing a key role in climate regulation and marine ecosystems.
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