Exploring HF-induced ionospheric turbulence by Doppler sounding and stimulated electromagnetic emissions at the High Frequency Active Auroral Research Program heating facility

被引：15

作者：

Sergeev, Evgeny N. ^{[1
,2
]}

Shindin, Alexey V. ^{[1
]}

Grach, Savely M. ^{[1
]}

Milikh, Gennady M. ^{[3
]}

Mishin, Evgeny V. ^{[4
]}

Bernhardt, Paul A. ^{[5
,6
]}

Siefring, Carl L. ^{[5
,6
]}

Briczinski, Stanley J. ^{[5
,6
]}

McCarrick, Michael J. ^{[5
,6
]}

机构：

[1] Lobachevsky State Univ Nizhni Novgorod, Fac Radiophys, Nizhnii Novgorod, Russia

[2] Lobachevsky State Univ Nizhni Novgorod, Radiophys Res Inst, Nizhnii Novgorod, Russia

[3] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[4] Air Force Res Lab, Space Vehicles Directorate, Kirtland AFB, NM USA

[5] Naval Res Lab, Plasma Phys Div, Washington, DC 20375 USA

[6] Naval Res Lab, Div Informat Technol, Washington, DC 20375 USA

来源：

RADIO SCIENCE | 2016年 / 51卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

ionosphere; active experiments; artificial irregularities; Doppler sounding; stimulated electromagnetic emission; PUMP WAVE FREQUENCY; DOWNSHIFTED MAXIMUM; SPECTRA; PLASMA; RADIOWAVE; RADIATION; FEATURES;

D O I：

10.1002/2015RS005936

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the features of the F region plasma perturbations during HF heating experiments at the High Frequency Active Auroral Research Program facility in March-April 2011 and May-June 2014. The diagnostics included multifrequency Doppler (phase) sounding (MDS) and stimulated electromagnetic emission (SEE). The results concern modification of the electron density profile near the reflection and upper hybrid heights, as well as correlation of the density modification with temporal behavior of narrow continuum, downshifted maximum, and broad continuum SEE spectral features. We reveal also a new SEE spectral feature which appears in the SEE spectra for the pump frequency f(0) near the third and fourth electron gyroharmonics. It is located in the SEE spectrum well below the pump wave frequency, f-f(0)similar to-(40-220)kHz, occupies a wide frequency range till 100-150kHz, and is termed the broad downshifted emission.

引用

页码：1118 / 1130

页数：13

共 42 条

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