The concept of background currents is offered in the examples of barotropic and baroclinic quasigeostrophic models. The background currents are characterized by constant value of potential vorticity, which minimize the energy of a system. Hamiltonian character of motion equations of fluid particles allows to apply such models to study chaotic advection.
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Communicated by H. Aref
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Ryzhov, E., Koshel, K. & Stepanov, D. Background current concept and chaotic advection in an oceanic vortex flow. Theor. Comput. Fluid Dyn. 24, 59–64 (2010). https://doi.org/10.1007/s00162-009-0170-1
- Background currents
- Chaotic advection
- Topographic vortex