AGEOSTROPHIC STABILITY OF DIVERGENT JETS.
Abstract
The hydrodynamic stability of divergent jets is studied under the condition of small but nonzero Rossby number. Small disturbances to the basic state consist of fast waves of inertio-gravity type and slow waves with speed comparable to that of the basic current. It is shown that the fast waves are stable and do not amplify. It is shown also that, for a velocity profile resembling that of the Gulf Stream, the slow waves are destabilized by the presence of nonzero Rossby number. For very shallow jets it is found that the complex wave velocity is small and that, in general, disturbances will be stable unless the jet has a countercurrent. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1969
- Accession Number
- AD0690554
Entities
People
- Stanley J. Jacobs
Organizations
- University of Michigan