GENERATION OF SMALL-SCALE IRREGULARITIES IN THE EQUATORIAL ELECTROJET.
GENERATION OF SMALL-SCALE IRREGULARITIES IN THE EQUATORIAL ELECTROJET.
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DOI：
10.1029/ja078i001p00240
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发表时间：
1973
影响因子：
--
通讯作者：
R. Sudan;J. Akinrimisi;D. T. Farley
中科院分区：
文献类型：
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作者：
R. Sudan;J. Akinrimisi;D. T. Farley
提出了一种理论，用于解释在电子漂移速度低于离子声速的情况下赤道电急流中短波不规则性的产生。发现由环境电离密度梯度驱动不稳定的长波（数十米）水平传播波即使是非色散的，也不会变得很陡。然而，与这些波相关的局部垂直速度和水平密度梯度能够产生雷达观测中检测到的米波波长倾斜传播的不规则性。
A theory that accounts for the generation of short-wavelength irregularities in the equatorial electrojet for an electron drift velocity below the ion-acoustic speed is presented. Long-wavelength (tens of meters) horizontally propagating waves driven unstable by the ambient ionization density gradient are found not to steepen very much, even though they are nondispersive. However, the local vertical velocity and horizontal density gradient associated with these waves are capable of generating the meter-wavelength obliquely propagating irregularities detected in radar observations.