[Todos] [Coloquios] COLOQUIO DCAO/CIMA/IFAECI - JUEVES 16/04/2026 13hs: PRESENCIAL Sala 2308 - Pab 0+Inf

[Coloquios CIMA-DCAO-IFAECI]

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Coloquios del Departamento de Ciencias de la Atmósfera y los Océanos 
(DCAO)/ Centro de Investigaciones del Mar y la Atmósfera (CIMA) 
/Instituto Franco-Argentino de Estudios sobre el Clima y sus Impactos 
(IFAECI)
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JUEVES 16/04 a las 13hs
*** Presencial: Sala de Reuniones 2308 (Pab 0+Inf) ***

Para quienes no pueden acercarse:
Enlace Google Meet  https://meet.google.com/tvk-zbqt-hog

Where do oceanic internal waves come from? Some answers from a 
data-driven approach based on Argo floats
Giovanni Dematteis (Università di Torino, Italia)

In the stratified ocean interior, diapycnal turbulent mixing is mostly 
caused by breaking internal waves. This type of mixing is a key driver 
for the upwelling branch of the meridional overturning circulation. 
However, mixing due to internal waves is still poorly constrained in 
ocean models, due to a lack of understanding of: first, how much a 
certain internal wave field is able to mix; second, the regional 
distribution of internal wave energy itself. Here, we tackle the second 
knowledge gap. Applying a machine-learning clustering technique to the 
internal wave energy level distribution from Argo data, we extract a 
small number of coherent clusters that characterize different types of 
oceanic internal wave fields. The resulting clusters can be explained in 
terms of the main regional controls of internal waves: the 
stratification configuration and the forcing mechanisms, among which 
internal tides, wind-driven near-inertial waves, and eddy-wave 
interactions. We propose a simple phenomenological internal wave 
generation model able to predict the mean global patterns of internal 
wave energy in different depth layers.

Giovanni Dematteis’ research focuses primarily on nonlinear wave 
dynamics applied to oceanic internal waves. Giovanni studied Physics at 
Università di Torino, and obtained a PhD in Applied Mathematics from 
Politecnico di Torino in 2019. Since then, he has been a postdoc at 
Rensselaer Polytechnic Institute and Woods Hole Oceanographic 
Institution, USA, and then back at Università di Torino. There, he will 
become Associate Professor in the summer of 2026 after recently 
obtaining a European Research Council Starting Grant on mixing due to 
oceanic internal waves.

¡¡Les esperamos!!

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Grupo Coloquios CIMA/DCAO/IFAECI
Departamento de Ciencias de la Atmósfera y los Océanos (FCEN-UBA)
Centro de Investigaciones del Mar y la Atmósfera (CONICET-UBA)
Instituto Franco-Argentino de Estudios sobre el Clima y sus Impactos
(CNRS-CONICET-IRD-UBA)
Ciudad Universitaria
email: coloquios en cima.fcen.uba.ar

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