Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency
We present experimental results from the studies of large-scale inhomogeneities along the external magnetic field with increased electron density, electron temperature, and excitation of elongated plasma waves (Langmuir and ion-acoustic), induced by the ordinary (O-mode) and extraordinary (X-mode) H...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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INFRA-M
2023-03-01
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| Series: | Solar-Terrestrial Physics |
| Subjects: | |
| Online Access: | https://naukaru.ru/en/nauka/article/55197/view |
| _version_ | 1797854989255704576 |
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| author | Borisova T. D. Blagoveshchenskaya N. F. Kalishin A. S. |
| author_facet | Borisova T. D. Blagoveshchenskaya N. F. Kalishin A. S. |
| author_sort | Borisova T. D. |
| collection | DOAJ |
| description | We present experimental results from the studies of large-scale inhomogeneities along the external magnetic field with increased electron density, electron temperature, and excitation of elongated plasma waves (Langmuir and ion-acoustic), induced by the ordinary (O-mode) and extraordinary (X-mode) HF heating near the F2-layer critical frequency, in the high-latitude ionospheric F-region. The experiments have been carried out at the EISCAT/Heating facility (Tromsø, Norway). Powerful HF radio waves radiated towards the magnetic zenith through a step change in the effective radiated power at frequencies fH near and below the F2-layer critical frequency fₒF2. The EISCAT incoherent scatter radar (930 MHz), co-located with the EISCAT/Heating facility, was utilized for diagnostics of ionospheric modification effects. We calculated the electric field of a powerful HF radio wave near the reflection altitude, taking into account the non-deflective absorption along the propagation path. We determined the conditions for electric field generation and its threshold (minimum) values required for electron density enhancements in a wide altitude range, excitation of Langmuir and ion-acoustic plasma waves under fH~fₒF2 and fH |
| first_indexed | 2024-04-09T20:15:12Z |
| format | Article |
| id | doaj.art-42e5a5fefb72468480f9d9dd0b881e48 |
| institution | Directory Open Access Journal |
| issn | 2500-0535 |
| language | English |
| last_indexed | 2024-04-09T20:15:12Z |
| publishDate | 2023-03-01 |
| publisher | INFRA-M |
| record_format | Article |
| series | Solar-Terrestrial Physics |
| spelling | doaj.art-42e5a5fefb72468480f9d9dd0b881e482023-03-31T08:38:36ZengINFRA-MSolar-Terrestrial Physics2500-05352023-03-0191213010.12737/stp-91202303Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequencyBorisova T. D.0Blagoveshchenskaya N. F.1Kalishin A. S.2Arctic and Antarctic Research Institute, St. Petersburg, RussiaArctic and Antarctic Research Institute, St. Petersburg, RussiaArctic and Antarctic Research Institute, St. Petersburg, RussiaWe present experimental results from the studies of large-scale inhomogeneities along the external magnetic field with increased electron density, electron temperature, and excitation of elongated plasma waves (Langmuir and ion-acoustic), induced by the ordinary (O-mode) and extraordinary (X-mode) HF heating near the F2-layer critical frequency, in the high-latitude ionospheric F-region. The experiments have been carried out at the EISCAT/Heating facility (Tromsø, Norway). Powerful HF radio waves radiated towards the magnetic zenith through a step change in the effective radiated power at frequencies fH near and below the F2-layer critical frequency fₒF2. The EISCAT incoherent scatter radar (930 MHz), co-located with the EISCAT/Heating facility, was utilized for diagnostics of ionospheric modification effects. We calculated the electric field of a powerful HF radio wave near the reflection altitude, taking into account the non-deflective absorption along the propagation path. We determined the conditions for electric field generation and its threshold (minimum) values required for electron density enhancements in a wide altitude range, excitation of Langmuir and ion-acoustic plasma waves under fH~fₒF2 and fHhttps://naukaru.ru/en/nauka/article/55197/viewhigh-latitude ionospheref-regionpowerful hf radio waveelectric fieldelectron density enhancementlangmuir waveion-acoustic waveincoherent scatter radareiscat |
| spellingShingle | Borisova T. D. Blagoveshchenskaya N. F. Kalishin A. S. Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency Solar-Terrestrial Physics high-latitude ionosphere f-region powerful hf radio wave electric field electron density enhancement langmuir wave ion-acoustic wave incoherent scatter radar eiscat |
| title | Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency |
| title_full | Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency |
| title_fullStr | Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency |
| title_full_unstemmed | Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency |
| title_short | Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency |
| title_sort | features of artificial ionosphere turbulence induced by the o and x mode hf heating near the f2 layer critical frequency |
| topic | high-latitude ionosphere f-region powerful hf radio wave electric field electron density enhancement langmuir wave ion-acoustic wave incoherent scatter radar eiscat |
| url | https://naukaru.ru/en/nauka/article/55197/view |
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