Articles | Volume 21, issue 4
https://doi.org/10.5194/os-21-1589-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-1589-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Turbulent dissipation along contrasting internal tide paths off the Amazon shelf from AMAZOMIX
Fabius Kouogang
CORRESPONDING AUTHOR
CECI, Université de Toulouse, CERFACS/CNRS/IRD, Toulouse, France
Departamento de Oceanografia, Universidade Federal de Pernambuco, DOCEAN/UFPE, Recife, Brazil
Ariane Koch-Larrouy
CECI, Université de Toulouse, CERFACS/CNRS/IRD, Toulouse, France
Jorge Magalhaes
Department of Geoscience, Environment and Spatial Planning (DGAOT), Faculty of Sciences, University of Porto, Porto, Portugal
Alex Costa da Silva
Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
Daphne Kerhervé
CECI, Université de Toulouse, CERFACS/CNRS/IRD, Toulouse, France
Arnaud Bertrand
Departamento de Oceanografia, Universidade Federal de Pernambuco, DOCEAN/UFPE, Recife, Brazil
Evan Cervelli
Rockland Scientific Inc, Lunenburg, Nova Scotia, Canada
Fernand Assene
Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
Department of Maritime Navigation and Information Systems, National Advanced School of Maritime and Ocean Science and Technology (ENSTMO), University of Ebolowa, Ebolowa, Cameroon
Jean-François Ternon
MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Sète, France
Pierre Rousselot
IMAGO, Université de Bretagne Occidentale, CNRS, Ifremer, IRD, Brest, France
James Lee
Departamento de Oceanografia, Universidade Federal do Pará, UFPA, Belém, Brazil
Marcelo Rollnic
Departamento de Oceanografia, Universidade Federal do Pará, UFPA, Belém, Brazil
Moacyr Araujo
Departamento de Oceanografia, Universidade Federal de Pernambuco, DOCEAN/UFPE, Recife, Brazil
Data sets
AMAZOMIX cruise – Physical datasets P. Rousselot et al. https://doi.org/10.17882/97235
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.
New research reveals that ocean mixing off the Amazon coast peaks not only near wave origins but...