FN Archimer Export Format
PT J
TI A study of the phase instability of quasi-geostrophic Rossby waves on the infinite beta-plane to zonal flow perturbations
BT
AF MARIE, Louis
AS 1:;
FF 1:PDG-DOP-DCB-OPS-LPO;
C1 IFREMER, Ctr Brest, CNRS IRD UBO UMR6523, Lab Phys Oceans, F-29280 Plouzane, France.
C2 IFREMER, FRANCE
SI BREST
SE PDG-DOP-DCB-OPS-LPO
IN WOS Ifremer jusqu'en 2018
IF 1.3
TC 2
UR https://archimer.ifremer.fr/doc/00008/11903/8612.pdf
LA English
DT Article
AB The problem of the linear instability of quasi-geostrophic Rossby waves to zonal flow perturbations is investigated on an infinite beta-plane using a phase dynamics formalism. Equations governing the coupled evolutions of a zonal velocity perturbation and phase and amplitude perturbations of a finite-amplitude wave are obtained. The analysis is valid in the limit of infinitesimal, zonally invariant perturbation components, varying slowly in the meridional direction and with respect to time. In the case of a slow sinusoidal meridional variation of the perturbation components, analytical expressions for the perturbation growth rates are obtained, which are checked against numerical codes based on standard Floquet theory.
PY 2010
SO Nonlinear Processes In Geophysics
SN 1023-5809
PU Copernicus Gesellschaft Mbh
VL 17
IS 1
UT 000274995600003
BP 49
EP 63
ID 11903
ER
EF