Application of WKB Theory to Turbulence Layers in the Vicinity of Critical Levels
Application of WKB Theory to Turbulence Layers in the Vicinity of Critical Levels
复制标题
WKB理论在临界层附近湍流层中的应用
DOI：
10.2151/jmsj1965.60.5_1034
复制
发表时间：
1982
影响因子：
3.1
通讯作者：
Hiroshi L. Tanaka
中科院分区：
文献类型：
--
作者：
Hiroshi L. Tanaka
Viscous dissipation and Newtonian cooling suppress the breaking of internal gravity waves particularly in the vicinity of the critical levels. Stabilization criteria for suppressing wave breakdown are obtained incorporating the effects of viscous dissipation and Newtonian cooling separately when the basic Richardson number is large. The stabilization criterion associated with viscous dissipation derived here is more consistent than that obtained by Fritts and Geller (1976). Newtonian cooling, which is less important for the short horizontal wavelength, predominates over viscosity as the horizontal wavelength increases. Both effects become comparable when the horizontal wavelength is about 250 km in the stratosphere and is much longer in the mesosphere. Characteristics of internal gravity waves at 20 km altitude such as wave amplitude and momentum flux are estimated on the basis of the thickness of the turbulence layer observed in the lower stratosphere.
分层结构不稳定性的基础研究
DOI：
--
发表时间：
2008
期刊：
Flow in Gravity-Currents OCEANS'08 MTS
影响因子：
--
作者：
Yugo Sanada;Yasuyuki Toda;Takeshi Nagasawa;Takehiro Shibuya
通讯作者：
Takehiro Shibuya