Mean ionospheric properties in winter at Zhongshan Station, Antarctica

ADVANCES IN POLAR SCIENCE ›› 1997, Vol. 8 ›› Issue (2-English): 133-138.

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Mean ionospheric properties in winter at Zhongshan Station, Antarctica

Liu Shunlin, He Longsong and Liu Ruiyuan

Polar Research Institute of China, Shanghai 200129, China

Online:1947-06-30 Published:1947-06-30
Contact: Liu Shunlin
Supported by:
This project was supported by the National Natural Science Foundation of China and the State Antarctic Committee of China.

Abstract

Abstract:

Ionograms taken from a Digisonde Portable Sounder (DPS-4) at Zhongshan Station of Antarctica in 1995 are used to analyse the mean ionospheric properties in winter. The F region is rather unstable in winter and has large diurnal variation. The monthly medium value of ƒ_oF₂ 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 ƒ_oF₂ 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 ƒ_oE₂ around 1700UT. The diurnal variation of E layer is relatively smooth.

Key words: high latitude ionosphere, magnetic noon phenomena, plasma convection, polar hole, Zhongshan Station

Liu Shunlin, He Longsong, Liu Ruiyuan. Mean ionospheric properties in winter at Zhongshan Station, Antarctica[J]. ADVANCES IN POLAR SCIENCE, 1997, 8(2-English): 133-138.

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Mean ionospheric properties in winter at Zhongshan Station, Antarctica

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