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Poster De Conférence Année : 2023

Templex-detected patterns and their connection to elephant seal behaviour

Juan Cruz Bonel
  • Fonction : Auteur
Nicolas Bodnariuk
  • Fonction : Collaborateur
  • PersonId : 1305127
Gisela Charó
Christophe Guinet
Martín Saraceno

Résumé

The topological approach called templex (Char´o et al., 2022) introduces the use of a cell complex endowed with a directed graph to characterize the structure of a flow in phase space. Templex properties are shared by fluid particles exhibiting a certain qualitative behavior, and therefore can be used to detect Lagrangian patterns. When applied to single particles, the approach requires long time windows to reconstruct the flow in phase space. In order to compensate for the low-term stability of ocean particle behavior, we develop a strategy that uses a bundle of several particles in the neighborhood of a point. The topological classes found with this strategy applied to surface geostrophic velocities maps derived from satellite altimetry enable identifying eddies and other patterns, which have been studied in connection with elephant seal behaviour.

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Dates et versions

hal-04276347 , version 1 (09-11-2023)

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  • HAL Id : hal-04276347 , version 1

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Juan Cruz Bonel, Nicolas Bodnariuk, Gisela Charó, Christophe Guinet, Martín Saraceno, et al.. Templex-detected patterns and their connection to elephant seal behaviour. Ocean Surface Topography Science Team (OSTST) Meeting, Nov 2023, San Juan (Puerto Rico), Puerto Rico. ⟨hal-04276347⟩

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