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张铭. WAVE-CISK对称不稳定谱点分布的半圆定理[J]. 大气科学, 2001, 25(4): 559-566. DOI: 10.3878/j.issn.1006-9895.2001.04.12
引用本文: 张铭. WAVE-CISK对称不稳定谱点分布的半圆定理[J]. 大气科学, 2001, 25(4): 559-566. DOI: 10.3878/j.issn.1006-9895.2001.04.12
Zhang Ming. Semicircle Theorem on the Spectral Distribution in Symmetrical Instability with Wave-Cisk[J]. Chinese Journal of Atmospheric Sciences, 2001, 25(4): 559-566. DOI: 10.3878/j.issn.1006-9895.2001.04.12
Citation: Zhang Ming. Semicircle Theorem on the Spectral Distribution in Symmetrical Instability with Wave-Cisk[J]. Chinese Journal of Atmospheric Sciences, 2001, 25(4): 559-566. DOI: 10.3878/j.issn.1006-9895.2001.04.12

WAVE-CISK对称不稳定谱点分布的半圆定理

Semicircle Theorem on the Spectral Distribution in Symmetrical Instability with Wave-Cisk

  • 摘要: 采用滞弹性近似研究了WAVE-CISK下对称性扰动的谱点分布,得到了WAVE-CISK下对称不稳定扰动谱点分布的半圆定理,用其可估计该对称不稳定增长率的上界.发现存在WAVE-CISK时加热反馈和层结参数对该不稳定的增长率均有重要影响.WAVE-CISK加热反馈越强、基流的垂直切变越大,扰动的垂直结构越简单则该不稳定增长率的上界就越大.存在WAVE-CISK时滞弹性近似下的对称不稳定发生的条件也较Boussinesq近似下的更苛刻.

     

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