Observation and quantification of inertial effects on the drift of floating objects at the ocean surface
arXiv:1911.04038 · doi:10.1063/1.5139045
Abstract
We present results from an experiment designed to better understand the mechanism by which ocean currents and winds control flotsam drift. The experiment consisted in deploying in the Florida Current and subsequently satellite tracking specially designed drifting buoys of varied sizes, buoyancies, and shapes. We explain the differences in the trajectories described by the special drifters as a result of their inertia, primarily buoyancy, which constrains the ability of the drifters to adapt their velocities to instantaneous changes in the ocean current and wind that define the carrying flow field. Our explanation of the observed behavior follows from the application of a recently proposed Maxey--Riley theory for the motion of finite-size particles floating at the surface ocean. The nature of the carrying flow and the domain of validity of the theory are clarified, and a closure proposal is made to fully determine its parameters in terms of the carrying fluid system properties and inertial particle characteristics.
arXiv commentPhysics of Fluids, submitted 17-Nov-2019
References in corpus (10)
- Defining Coherent Vortices Objectively from the Vorticity
- An Operational Search and Rescue Model for the Norwegian Sea and the North Sea
- Dynamics of a small neutrally buoyant sphere in a fluid and targeting in Hamiltonian systems
- Coherent Lagrangian vortices: The black holes of turbulence
- Advances in Search and Rescue at Sea
- Stable chaos
- Dissipative inertial transport patterns near coherent Lagrangian eddies in the ocean
- Building a Maxey--Riley framework for surface ocean inertial particle dynamics
- Inertia-induced accumulation of flotsam in the subtropical gyres
- Markov-chain-inspired search for MH370
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