In this paper Pi2 pulsations at Zhongshan Station of Antarctica are analyzed from October 1-31, 1996. Their characteristics e. g. occurrence frequency, frequency, and polarization are studied. The characteristics of Pi2 pulsations are summerized as follows: (1) Pi2 pulsations at Zhongshan Station usually take place from 2000 MLT to 0200 MLT; the main frequencies are between 6.79 mHz and 13.58mHZ; (2) Pi2 pulsations with low frequencies are dominent. The range of main frequencies becomes narrow at midnight; (3) The Polarization of Pi2 pulsations are almost linear; (4) About the orientation of major axes the NW-SE direction is dominent before 2200 MLT and NE-SW is dominent after 2200 MLT. The generation mechanism of Pi2 pulsations at Zhongshan Station is discussed theoretically.
The characteristics of Pi2 pulsations at Zhongshan Station of Antarctica
1 Sakurai T, Mcpherron RL (1983) : Satellite observation of Pi2 activity at synchronours orbit. J. Grophys. Res., 88: 7015-7027. DOI:10.1029/JA088iA09p07015
2 Yang SF (1994) : The characteristics of Pi2 pulsations at Great Wall Station of Antarctica. Acta Geophysica Sinica, 37: 580-585.
3 Yang SF (1991) : Observation of Pi2 pulsations at low-lititude. Acta Geophysica Sinica, 34: 154-160.