Carriers of \emph{Sargassum} and mechanism for coastal inundation in the Caribbean Sea
| Autor: | F. Andrade-Canto, F. J. Beron-Vera, G. J. Goni, D. Karrasch, M. J. Olascoaga, J. Triñanes |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics::Fluid Dynamics Physics - Atmospheric and Oceanic Physics Mechanics of Materials Mechanical Engineering Atmospheric and Oceanic Physics (physics.ao-ph) Computational Mechanics FOS: Physical sciences Chaotic Dynamics (nlin.CD) Condensed Matter Physics Nonlinear Sciences - Chaotic Dynamics Physics::Atmospheric and Oceanic Physics Physics::Geophysics |
| Popis: | We identify effective carriers of \emph{Sargassum} in the Caribbean Sea and describe a mechanism for coastal choking. Revealed from satellite altimetry, the carriers of \emph{Sargassum} are mesoscale eddies (vortices of 50-km radius or larger) with coherent material (i.e., fluid) boundaries. These are observer-independent -- \emph{unlike} eddy boundaries identified with instantaneously closed streamlines of the altimetric sea-surface height field -- and furthermore harbor finite-time attractors for networks of elastically connected finite-size buoyant or "inertial" particles dragged by ocean currents and winds, a mathematical abstraction of \emph{Sargassum} rafts. The mechanism of coastal inundation, identified using a minimal model of surface-intensified Caribbean Sea eddies, is thermal instability in the presence of bottom topography. To appear in Physics Fluids |
| Databáze: | OpenAIRE |
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