Carriers of Sargassum and mechanism for coastal inundation in the Caribbean Sea

被引：21

作者：

Andrade-Canto, F. ^{[1
]}

Beron-Vera, F. J. ^{[2
]}

Goni, G. J. ^{[3
]}

Karrasch, D. ^{[4
]}

Olascoaga, M. J. ^{[5
]}

Trinanes, J. ^{[3
]}

机构：

[1] Colegio Frontera Sur, Dept Observac & Estudio Tierra Atmosfera & Oceano, Chetmal, Quintana Roo, Mexico

[2] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Atmospher Sci, Miami, FL 33149 USA

[3] Natl Ocean & Atmospher Adm, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA

[4] Tech Univ Munich, Zentrum Math, Munich, Germany

[5] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Dept Ocean Sci, Miami, FL 33149 USA

来源：

PHYSICS OF FLUIDS | 2022年 / 34卷 / 01期

关键词：

TRANSPORT BARRIERS; VORTICES; SEAWEED; EDDIES; MODEL;

D O I：

10.1063/5.0079055

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

We identify effective carriers of Sargassum in the Caribbean Sea and describe a mechanism for coastal choking. Revealed from satellite altimetry, the carriers of Sargassum are mesoscale eddies (vortices of 50-km radius or larger) with coherent material (i.e., fluid) boundaries. These are observer-independent-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 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.

引用

页数：9

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