Radar observations of ionospheric irregularities at Syowa Station, Antarctica: a brief overview
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 <i>E</i>- and <i>F</i>-region ionosphere. Some observational results (i.e., long-...
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1996-12-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/14/1454/1996/angeo-14-1454-1996.pdf |
| Summary: | 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 <i>E</i>-
and <i>F</i>-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 <i>E</i>-region
irregularities. An HF radar experiment also began in February 1995 to explore
decameter-scale <i>E</i>- and <i>F</i>-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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| ISSN: | 0992-7689 1432-0576 |