EXCITATION OF STRONG LANGMUIR TURBULENCE IN THE IONOSPHERE - COMPARISON OF THEORY AND OBSERVATIONS

被引：41

作者：

DUBOIS, DF

HANSEN, A

ROSE, HA

RUSSELL, D

机构：

[1] UNIV OSLO,ITA,N-0315 OSLO,NORWAY

[2] LODESTAR RES CORP,BOULDER,CO 80301

来源：

PHYSICS OF FLUIDS B-PLASMA PHYSICS | 1993年 / 5卷 / 07期

关键词：

D O I：

10.1063/1.860699

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The predictions of models of strong Langmuir turbulence (SLT) are compared with recent space- and time-resolved radar observations of the power spectra of turbulence induced in the ionosphere by powerful high-frequency (HF) waves. Distinct signatures of caviton dynamics, not predicted by the weak turbulence approximation, are seen in the observations. An improved model of the low-frequency fluctuations for equal electron and ion temperatures is presented as well as a discussion of density profile modification by the induced turbulence.

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页码：2616 / 2622

页数：7

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