Phenomena in the High-Latitude Ionospheric F Region Induced by a HF Heater Wave at Frequencies Near the Fourth Electron Gyroharmonic

Phenomena in the High-Latitude Ionospheric F Region Induced by a HF Heater Wave at Frequencies Near the Fourth Electron Gyroharmonic
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接近第四电子回旋谐波频率的高频加热波引起的高纬度电离层F区现象

DOI:
10.1007/s11141-014-9489-6
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发表时间:
2014
影响因子:
0.8
通讯作者:
Borisova T
Borisova T
中科院分区:
工程技术4区
文献类型:
--
作者:
Borisova T

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利用多仪器研究了高纬电离层F区的一些现象,给出了当加热器频率与F2层截止频率之比接近四阶电子回旋谐波时,高功率HF O模无线电波向磁天顶注入所激发的高纬电离层F区的一些现象.基于受激电磁辐射(SEE)、相对于加热波频率失谐的千赫和赫兹频段的光谱观测,比较分析了电离层等离子体和小尺度人工场向不规则体的不同参数的行为。在四阶谐振频率附近发现热(共振)参量不稳定性(TPI)和参量衰减(收缩)不稳定性(PDI)共存。
We present the results of multi-instrument studies of the phenomena in the high-latitude ionospheric F region stimulated by high-power HF O-mode radio waves injected towards the magnetic zenith when the ratio of the heater frequency to the cutoff frequency of the F2layer is near the fourth electron gyroharmonic. Based on the stimulated electromagnetic emission (SEE), spectral observations in the kilohertz and hertz frequency bands of detunings relative to the heater wave frequency, the behaviors of different parameters of the ionospheric plasma and small-scale artificial field-aligned irregularities are compared and analyzed. The coexistence of the thermal (resonance) parametric instability (TPI) and parametric decay (striction) instability (PDI) was found in the vicinity of the fourth gyroresonance harmonic.
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