Helioseismic Constraints on the Gradient of Angular Velocity at the Base of the Solar Convection Zone
Helioseismic Constraints on the Gradient of Angular Velocity at the Base of the Solar Convection Zone
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DOI：
10.1086/310253
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发表时间：
1996-09
期刊：
影响因子：
--
通讯作者：
A. Kosovichev
中科院分区：
文献类型：
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作者：
A. Kosovichev
从近刚性旋转的辐射内部的对流区的纬向差分旋转的过渡层在太阳的内部动力学中起着重要的作用。利用1986-1990年在大熊太阳天文台测得的p模频率的转动分裂系数，我们得到过渡层的厚度为0.09 ± 0.04太阳半径（63 ± 28 Mm），大部分转捩发生在对流区的对流分层部分之下，正如22年太阳活动周期的发电机理论所建议的那样。
The layer of transition from the nearly rigid rotation of the radiative interior to the latitudinal differential rotation of the convection zone plays a significant role in the internal dynamics of the Sun. Using rotational splitting coefficients of the p-mode frequencies, obtained during 1986-1990 at the Big Bear Solar Observatory, we have found that the thickness of the transitional layer is 0.09 ± 0.04 solar radii (63 ± 28 Mm), and that most of the transition occurs beneath the adiabatically stratified part of the convection zone, as suggested by the dynamo theories of the 22 yr solar activity cycle.