FLUCTUATIONS IN THE DIRECTION OF PROPAGATION OF LOW FREQUENCY IONOSPHERIC WAVES

被引：0

作者：

Sato, Hiroatsu ^{[1
]}

Pecseli, Hans L. ^{[1
]}

Trulsen, Jan K. ^{[2
]}

机构：

[1] Univ Oslo, Dept Phys, Box 1048 Blindern, N-0316 Oslo, Norway

[2] Univ Oslo, Inst Theoret Astrophys, N-0316 Oslo, Norway

来源：

20TH ESA SYMPOSIUM ON EUROPEAN ROCKET AND BALLOON PROGRAMMES AND RELATED RESEARCH | 2011年 / 700卷

基金：

美国国家科学基金会;

关键词：

AURORAL E-REGION; CAP E-REGION; ELECTROSTATIC-WAVES; PLASMA-WAVES; EQUATORIAL ELECTROJET; FIELD; IRREGULARITIES; INSTABILITY; TURBULENCE; CAMPAIGN;

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Low frequency electrostatic waves in the ionospheric E-region are studied using data obtained by an instrumented rocket. Restricting the analysis to low frequencies and long wavelengths we find that the direction of wave-propagation varies randomly within a wide interval of aspect angles. We found evidence for fluctuations, or "jittering'', of the direction of the local electric field vector. The distribution of the directional change per time unit is determined. The distribution is found to depend on the intensity of the turbulence indicating also a significant spatial intermittency of the signal. Large amplitude fluctuations have a narrow aspect-angle distribution with little directional fluctuations. The wave properties depend on the strength of the ambient DC-electric field.

引用

下载

页码：629 / 634

页数：6

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