BANDED CONVECTION IN ROTATING FLUID SPHERES AND THE CIRCULATION OF THE JOVIAN ATMOSPHERE
BANDED CONVECTION IN ROTATING FLUID SPHERES AND THE CIRCULATION OF THE JOVIAN ATMOSPHERE
复制标题
旋转流体球中的带状对流和木星大气的循环
DOI：
10.1006/icar.1996.0123
复制
发表时间：
1996
期刊：
影响因子：
3.2
通讯作者：
P. Olson
中科院分区：
文献类型：
--
作者：
Jean;P. Olson
摘要：在旋转球壳中进行的热对流实验室实验表明，在高转速以及瑞利数远高于临界值的情况下，在外边界附近的薄层中会出现对称的条带和交替的纬向急流。这些条带是由球壳深处小尺度柱状对流的大规模有序排列形成的，而纬向急流是由柱状对流衍生出的二次流。条带的数量和纬向急流的强度随着转速的增加以及对流瑞利数的增加而增加。在与内球边界相切的圆柱体外的流体中，条带最为明显。在一个内外半径比\(r = 0.76\)（木星分子氢层的预期几何形状）的球壳中，条带占据赤道两侧\(\pm45^{\circ}\)的区域。这些实验中急流和条带的存在支持了木星上的纬向风是由深对流维持的这一推测。
Abstract Laboratory experiments of thermal convection in rotating spherical shells exhibit symmetric bands and alternating zonal jets in a thin layer near the outer boundary at high rotation rates and at Rayleigh numbers far in excess of the critical value. The bands result from large-scale ordering of small-scale columnar convection deeper in the shell and the zonal jets are secondary flows derived from the columnar convection. The number of bands and the strength of the zonal jets increase with increasing rotation rate and with increasing Rayleigh number of the convection. The bands are best defined in the fluid outside of the cylinder tangent to the inner spherical boundary. In a spherical shell with an inner/outer radius ratio r = 0.76, the expected geometry of the molecular hydrogen layer in Jupiter, the bands occupy the region within ±45° of the equator. The presence of jets and bands in these experiments support the conjecture that the zonal winds on Jupiter are maintained by deep convection.