Speaker
Delia Ionescu-Kruse
(IMAR, Bucarest, Roumanie)
Description
This talk is a survey of the short-wavelength stability method for rotating flows. This method is applied to
the specific study of some exact geophysical flows. For Gerstner-like geophysical flows one can identify
perturbations in certain directions as a source of instabilities with an exponentially growing amplitude,
the growth rate of the instabilities depending on the steepness of the travelling wave profile. On the
other hand, for certain physically realistic velocity profiles, steady flows moving only in the azimuthal
direction, with no variation in this direction, are locally stable to the short-wavelength perturbations…..
Author
Delia Ionescu-Kruse
(IMAR, Bucarest, Roumanie)