Radar observations of ionospheric irregularities at Syowa Station, Antarctica: a brief overview
International audience We briefly overview the radar observations that have been made for 30 years at Syowa Station, Antarctica for studying small-scale electron-density irregularities in the southern high-latitude E - and F -region ionosphere. Some observational results (i.e., long-term variations...
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| Other Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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HAL CCSD
1996
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| Online Access: | https://hal.science/hal-00316272 https://hal.science/hal-00316272/document https://hal.science/hal-00316272/file/angeo-14-1454-1996.pdf |
| Summary: | International audience We briefly overview the radar observations that have been made for 30 years at Syowa Station, Antarctica for studying small-scale electron-density irregularities in the southern high-latitude E - and F -region ionosphere. Some observational results (i.e., long-term variations of radio aurora, Doppler spectra with narrow spectral widths and low Doppler velocities, and simultaneous observations of radar and optical auroras) from VHF radars capable of detecting 1.3- to 3-m scale irregularities are presented. A new 50-MHz radar system equipped with phased-antenna arrays began operation in February 1995 to observe two-dimensional behaviours of E -region irregularities. An HF radar experiment also began in February 1995 to explore decameter-scale E - and F -region irregularities in the auroral zone and polar cap. These two radars will contribute to a better understanding of the ionospheric irregularities and ionospheric physics at southern high latitudes. |
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