Mean ionospheric properties in winter at Zhongshan Station, Antarctica
Ionograms taken from a Digisonde Portable Sounder (DPS-4) at Zhongshan Station of Antarctica in 1995 are used to analyze the mean ionospheric properties in winter. The F region is rather unstable in winter and has large diurnal variation. The monthly medium value of f0F2 has a main peak around 0900U...
Main Authors: | , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Polar Research Institute of China - PRIC
1997
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Subjects: | |
Online Access: | http://library.arcticportal.org/2140/ http://library.arcticportal.org/2140/1/A702.006.pdf |
Summary: | Ionograms taken from a Digisonde Portable Sounder (DPS-4) at Zhongshan Station of Antarctica in 1995 are used to analyze the mean ionospheric properties in winter. The F region is rather unstable in winter and has large diurnal variation. The monthly medium value of f0F2 has a main peak around 0900UT when maximum value occurs and a sub-peak between 1300 - 1500UT. It may be affected synthetically by the low energy electron precipitation in cusp region, the high latitude plasma convection and the solar radiation, resulted in so called F region magnetic noon phenomena. Low values of f0F2 occur in post-midnight (2000 - 0100UT) when Zhongshan Station crosses the ionospheric polar hole. Sporadic E layer which caused mostly by auroral particle precipitation can be observed almost every day with the highest value of f0E8 around 1700UT. The diurnal variation of E layer is relatively smooth. |
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