Basis of Ionospheric Modification by High-Frequency Waves

Kuo, Spencer

doi:10.2528/pier07041002

Cited by 4 publications

(1 citation statement)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because ES waves are supported by the plasma and only stay in the plasma. Thus, linear and nonlinear mode conversions are essential processes acting to achieve effective ionospheric heating and modification [1].…”

Section: Introductionmentioning

confidence: 99%

Overview of Ionospheric Modification by High Frequency (Hf) Heaters-Theory

Kuo¹

2014

PIER B

View full text Add to dashboard Cite

The scenarios of achieving effective ionospheric modification are summarized and the likely physical processes engaging linear and nonlinear mode conversions through plasma inhomogeneity and nonlinearity are revealed. Parametric instabilities, which are the directly relevant processes to achieve effective heating of the ionospheric F region, are formulated and analyzed. The threshold fields and growth rates of instabilities are obtained. The nonlinear Schrodinger equation governing the nonlinear evolution of Langmuir waves is derived and analyzed. The nonlinear periodic and solitary solutions of the equation are obtained. The analyses illustrate the conditions for the generation of Langmuir soliton and nonlinear periodic Langmuir waves.

show abstract

Section: Introductionmentioning

confidence: 99%

Overview of Ionospheric Modification by High Frequency (Hf) Heaters-Theory

Kuo¹

2014

PIER B

View full text Add to dashboard Cite

show abstract

Ionospheric modifications in high frequency heating experiments

Kuo

2015

Physics of Plasmas

View full text Add to dashboard Cite

Featured observations in high-frequency (HF) heating experiments conducted at Arecibo, EISCAT, and high frequency active auroral research program are discussed. These phenomena appearing in the F region of the ionosphere include high-frequency heater enhanced plasma lines, airglow enhancement, energetic electron flux, artificial ionization layers, artificial spread-F, ionization enhancement, artificial cusp, wideband absorption, short-scale (meters) density irregularities, and stimulated electromagnetic emissions, which were observed when the O-mode HF heater waves with frequencies below foF2 were applied. The implication and associated physical mechanism of each observation are discussed and explained. It is shown that these phenomena caused by the HF heating are all ascribed directly or indirectly to the excitation of parametric instabilities which instigate anomalous heating. Formulation and analysis of parametric instabilities are presented. The results show that oscillating two stream instability and parametric decay instability can be excited by the O-mode HF heater waves, transmitted from all three heating facilities, in the regions near the HF reflection height and near the upper hybrid resonance layer. The excited Langmuir waves, upper hybrid waves, ion acoustic waves, lower hybrid waves, and field-aligned density irregularities set off subsequent wave-wave and wave-electron interactions, giving rise to the observed phenomena.

show abstract

Ionospheric Clutter Suppression in HF Surface Wave Radar

Wen

Zhou

2009

Journal of Electromagnetic Waves and Applications

View full text Add to dashboard Cite

Basis of Ionospheric Modification by High-Frequency Waves

Cited by 4 publications

References 9 publications

Overview of Ionospheric Modification by High Frequency (Hf) Heaters-Theory

Overview of Ionospheric Modification by High Frequency (Hf) Heaters-Theory

Ionospheric modifications in high frequency heating experiments

Ionospheric Clutter Suppression in HF Surface Wave Radar

Contact Info

Product

Resources

About