Turbulence Process Domination under the Combined Forcings of Wind Stress, the Langmuir Vortex Force, and Surface Cooling
Turbulence Process Domination under the Combined Forcings of Wind Stress, the Langmuir Vortex Force, and Surface Cooling
复制标题
风应力、朗缪尔涡力和表面冷却联合作用下的湍流过程主导
DOI：
10.1175/jpo-d-13-021.1
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发表时间：
2014
影响因子：
3.5
通讯作者：
C. Grosch
中科院分区：
文献类型：
--
作者：
A. Gargett;C. Grosch
海洋表层的湍流是由不稳定的表面浮力通量、风应力强迫和波浪强迫通过与表面波场相关的涡旋力的时变组合产生的。时间和深度平均的垂直速度方差的观察下不稳定的浮力强迫下，在浅的非分层水柱的全深度湍流被用来确定过程的支配时，可以分配在很大范围内的混合强迫。两个湍流原型，一个代表全深度朗缪尔环流和其他代表全深度对流的属性，进行了详细描述。它表明，这些原型位于不同的区域的平面，其中和是朗缪尔和瑞利数，分别来自缩放与表面应力速度和朗缪尔循环的增长，其中和是平均和斯托克斯速度的时间尺度特性，分别从。在这种情况下，无论是过程...
AbstractTurbulence in the ocean surface layer is generated by time-varying combinations of destabilizing surface buoyancy flux, wind stress forcing, and wave forcing through a vortex force associated with the surface wave field. Observations of time- and depth-averaged vertical velocity variance of full-depth turbulence in shallow unstratified water columns under destabilizing buoyancy forcing are used to determine when process domination can be assigned over a wide range of mixed forcings. The properties of two turbulence archetypes, one representing full-depth Langmuir circulations and the other representing full-depth convection, are described in detail. It is demonstrated that these archetypes lie in distinct regions of the plane of , where and are Langmuir and Rayleigh numbers, respectively, derived from scaling with surface stress velocity and a time scale characteristic of the growth of Langmuir circulation , where and are mean and Stokes velocities, respectively. Situations in which neither proces...
影响因子：
3.5
作者：
Grant, Alan L. M.;Belcher, Stephen E.
通讯作者：
Belcher, Stephen E.