Quiet Night Arctic Ionospheric <i>D</i> Region Characteristics
نویسندگان
چکیده
VLF radio propagation recordings are used to determine the characteristics of nighttime polar lower D region ionosphere. Recordings both phase and amplitude in Arctic on days within ?1–2 weeks equinoxes enable their day-to-night changes be determined. These then combined with previously measured daytime find characteristics. The determined were summer; NRLMSISE atmosphere model is help height change from summer equinox (?5 km lower). principal path was 16.4 kHz Norwegian transmitter JXN (67°N, 14°E) 1,334 northwards across Ocean Ny-Ålesund (79°N, 12°E), Svalbard. Also 2,014-km NRK (37.5 kHz, Grindavik, 64°N, Iceland) Ny-Ålesund, 1,655-km Reykjavik (64°N, Iceland), 5,302-km Fairbanks (65°N) Alaska. night values (the Wait parameters) H? ? found average ?79 at down 77 near winter solstice (lower than 85 low midlatitudes by ?7 km) 0.6 km?1, respectively. This its variability shown consistent source ionization being energetic electron precipitation.
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Space Physics
سال: 2021
ISSN: ['2169-9402', '2169-9380']
DOI: https://doi.org/10.1029/2020ja029043