Finite-Amplitude Baroclinic Waves with Small Dissipation
Finite-Amplitude Baroclinic Waves with Small Dissipation
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小耗散的有限振幅斜斜波
DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
J. Pedlosky
中科院分区：
文献类型：
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作者：
J. Pedlosky
本文研究了具有非零小耗散的两层系统的有限振幅斜压不稳定性。耗散的存在，无论多么轻微，允许存在稳定的有限振幅波的解决方案。然而，对于足够小的摩擦力，如果满足本文提出的某个判据，定常波可能是不稳定的。计算表明，在这种情况下，存在一个连续的，缓慢的，周期性的振幅脉动，这是独立的初始条件。
Abstract A study of finite-amplitude baroclinic instability for a two-layer system with small but non-zero dissipation is presented. The presence of dissipation, however slight, allows the existence of steady finite-amplitude wave solutions. For sufficiently small friction, however, the steady wave may be unstable if a certain criterion, presented in this paper, is satisfied. Calculations indicate that in such cases a continuous, slow, periodic amplitude pulsation exists which is independent of the initial conditions.