Linear and Nonlinear Plasma Processes in Ionospheric HF Heating
نویسندگان
چکیده
منابع مشابه
Cerenkov Excitation of WhistlerHelicon Waves by Ionospheric HF Heating
A novel scheme for exciting VLF waves and injecting them in the magnetosphere is presented. The scheme is based on Cerenkov excitation of whistler and helicon waves in an altitude range of 80-95 kin. Contrary to the traditional Cerenkov excitation which relies on a charge moving at speeds ex•g the local phase velocity of the wave, the present scheme relies on currents moving transversely to its...
متن کاملModel for artificial ionospheric duct formation due to HF heating
[1] Strong electron heating by the injection of highly powerfu l HF waves can lead to the format ion of ionospheric plasma density perturbations that stretch along the magnetic field lines. Those density perturbations can serve as ducts for guiding natural and artificial ELF/VLF waves. This paper presents a theoretical model of duct formation due to HF heating of the ionosphere. The model is ba...
متن کاملGeneration of Artificial Acoustic-Gravity Waves and Traveling Ionospheric Disturbances in HF Heating Experiments
We report the results of our ionospheric HF heating experiments to generate artificial acoustic-gravitywaves (AGW) and traveling ionospheric disturbances (TID),whichwere conducted at theHigh-frequencyActiveAuroral Research Program facility inGakona, Alaska. Based on the data from UHF radar, GPS total electron content, and ionosonde measurements, we found that artificialAGW/TID can be generated ...
متن کاملSimulations of ionospheric turbulence produced by HF heating near the upper hybrid layer
Heating of the ionosphere by high-frequency (HF), ordinary (O) mode electromagnetic waves can excite magnetic field aligned density striations (FAS), associated with upper and lower hybrid turbulence and electron heating. We have used Vlasov simulations in one spatial and two velocity dimensions to study the induced turbulence in the presence of striations when the O-mode pump is mode converted...
متن کاملELF/VLF wave generation from the beating of two HF ionospheric heating sources
[1] It is well established that Extremely Low Frequency (ELF, 0.3–3 kHz) and Very Low Frequency (VLF, 3–30 kHz) radio waves can be generated via modulated High Frequency (HF, 3–10 MHz) heating of the lower ionosphere (60–100 km). The ionospheric absorption of HF power modifies the conductivity of the lower ionosphere, which in the presence of natural currents such as the auroral electrojet, cre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Plasma
سال: 2021
ISSN: 2571-6182
DOI: 10.3390/plasma4010008