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The Stability, Modulation and Long Wave Resonance of a Planetary Wave in a Rotating, Two-Layer Fluid on a Channel Beta-Planet
チャネル•ベータ面上の回転二層流体中の惑星波の安定性,変調と長波共鳴
1980
Journal of the Meteorological Society of Japan
チャネル•ベータ面上の回転二層流体中の惑星波の安定性,変調と長波共鳴
The stability of planetary waves in a two-layer fluid on a channel beta-plane is discussed. The lowest mode of baroclinic waves is shown to be always unstable in the sense of triad resonance instability. The lowest mode of barotropic waves, however, is stable if the zonal wavenumber is smaller than the critical value *c. The transition corresponds to the occurrence of resonating phenomenon between the group velocity of the primary wave and the phase speed of long waves. This phenomenon is
doi:10.2151/jmsj1965.58.3_160
fatcat:j7vu4devojdp5jt3noymbkr764