Accession Number : AD0690554

Title :   AGEOSTROPHIC STABILITY OF DIVERGENT JETS.

Descriptive Note : Final rept.,

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF MATHEMATICS

Personal Author(s) : Jacobs,Stanley J.

Report Date : JUN 1969

Pagination or Media Count : 32

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)

Descriptors :   (*HYDRODYNAMICS, GULF STREAM), OCEAN WAVES, STABILITY, EQUATIONS OF MOTION, VELOCITY, KINETIC ENERGY, DIFFERENTIAL EQUATIONS, APPROXIMATION(MATHEMATICS), OCEAN CURRENTS

Subject Categories : Physical and Dynamic Oceanography
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE