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"The Transport and Dynamics of Wave-Driven Reef Jets under the Influence of Stratification and Rotation" - Walter Torres

The physics of a plume or jet entering a quiescent fluid is a classical problem in fluid dynamics at both small and geophysical scales. In the coastal ocean, jets are particularly ecologically and physically important; they facilitate the exchange of heat, salt, nutrients, and larvae between the nearshore environment and open ocean. Here, we investigate the behavior of a momentum jet driven by the interaction of surface gravity waves with coral reef topography using a 3D coupled wave-circulation numerical model of an idealized island domain. Simulations conducted over a range of background density stratification and rotational (Coriolis force) conditions are used to characterize possible flow regimes and dynamical balances. The results highlight the role of stratification and rotation in significantly modifying the spatial structure of reef jets, as well as identifying the leading-order importance of wave-current interaction for jet dynamics in the near-surface.