Thickness of magnetic structures associated with the Earth's bow shock
Thickness of magnetic structures associated with the Earth's bow shock
复制标题
与地球弓形激波相关的磁结构的厚度
DOI：
10.1029/ja081i010p01791
复制
发表时间：
1976
期刊：
影响因子：
--
通讯作者：
E. Greenstadt
中科院分区：
文献类型：
--
作者：
D. Morse;E. Greenstadt
The thickness of magnetic structures associated with quasi-perpendicular bow shocks has been observed to vary over more than 2 orders of magnitude. In this paper we employ a criterion which states that the magnetic structure of perpendicular shocks adjusts itself to keep electrostatic waves excited by the relative drift of electrons and ions at marginal stability. The marginal stability boundary and measured plasma parameters are used to calculate the expected thickness of bow shock magnetic structures. The calculated and measured thicknesses are compared and found to be in good agreement over a range from less than 10 km to greater than 500 km. The conclusion is that the thickness of magnetic structures associated with quasi-perpendicular bow shocks is determined primarily by dissipation due to electron-ion streaming instabilities rather than by dispersive effects.
