On the rotation of the polar cap potential pattern and associated polar phenomena
On the rotation of the polar cap potential pattern and associated polar phenomena
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关于极冠电位模式的旋转和相关的极地现象
DOI：
10.1029/ja088ia07p05773
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
S. Akasofu
中科院分区：
文献类型：
--
作者：
F. Yasuhara;R. Greenwald;S. Akasofu
地磁和雷达观测表明，北极帽的位势和对流模式相对于中午-午夜子午线有明显的顺时针旋转。在简单模型的基础上，研究了高导电带(极光椭圆形)在自转中的一些基本作用。结果表明，它沿界面上的空间电荷分布是顺时针方向旋转的。在假设电导率比ΣH/ΣP=2.0时，在给定的一组条件下，旋转角被估计为极光椭圆形的电导率与极帽的电导率之比的函数。
Geomagnetic and radar observations indicate that the potential and convection pattern in the northern polar cap are significantly rotated clockwise with respect to the noon-midnight meridian. On the basis of simple models, some of the basic roles of the highly conductive belt (the auroral oval) on the rotation is examined. It is shown that it develops a space charge distribution along the boundaries in such a way as to rotate the potential pattern clockwise. The rotation angle is estimated as a function of the ratio of the conductivity in the auroral oval to that in the polar cap for a given set of conditions for an assumed conductivity ratio of ΣH/ΣP = 2.0.