Dynamics of the Leeuwin Current System
The coastal circulation off Western Australia differs from most other eastern boundary current systems in that its main current, the Leeuwin Current (LC) is directed southward towards the pole. In my presentation, I will discuss simple analytic models to explain the unique structure of the Leeuwin Current system. In these models, the poleward LC occurs because of interaction of the meridional surface density gradient in the Southern Indian Ocean with the continental slope. Advection of warm water within the LC generates a density front, which drives the subsurface Leeuwin Undercurrent, just offshore of the LC.