Prof Pavel S. Berloff, Imperial College London

Abstract: Theoretical studies of coherent vortices have a half-century history and in many ways have become classics of geophysical fluid dynamics. Some recent results will be presented on a new class of stable and ever-living coherent vortices on stratified background shears. These features, referred to as “vortex pulsars”, are fundamentally non-isolated, and also asymmetric and nonstationary. Two distinctly different families of solutions — “strong” and “weak” — will be discussed.