STATISTICAL CHARACTERISTICS OF Pc1-2 WAVES NEAR THE CUSP LATITUDES

doi:10.13679/j.jdyj.2014.2.324

ADVANCES IN POLAR SCIENCE ›› 2014, Vol. 26 ›› Issue (3): 324-330.DOI: 10.13679/j.jdyj.2014.2.324

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STATISTICAL CHARACTERISTICS OF Pc1-2 WAVES NEAR THE CUSP LATITUDES

QIU Yiting^1,2, LIU Yonghua², ZHAO Haofeng¹

¹Nanjing University of Information Science and Technology, Nanjing 210044, China;
²Polar Research Institute of China, Shanghai 200136, China

Received:2013-12-20 Revised:2014-01-27 Online:2014-09-30 Published:2014-09-30
Contact: Yi-Ting QIU

Abstract

Abstract: We recorded induction magnetometer data from Zhongshan and Davis Stations in Antarctica, for March, June, September, and December in 2004. We used cross-spectrum analysis to statistically study Pc1-2 wave occurrence, center frequency, and amplitude variations with respect to the seasons and magnetic local time. Of 2 932 valid wave events, Pc1-2 waves had a higher occurrence in March (51.4%) and September (26.1%) than in December (18.6%) and June (3.8%), and occurred most frequently near the magnetic local noon (59.8% at 0800–1000 UT). The wave center frequency was higher post-noon than pre-noon and the wave amplitude reached a maximum at 0800 UT. The maximal center frequency and minimal amplitude occurred in June. These results suggest that Pc1-2 wave properties near the cusp latitudes are strongly influenced by ionospheric conductivity.

Key words: Pc1-2 wave, cusp, occurrence, high latitude

QIU Yiting, LIU Yonghua, ZHAO Haofeng. STATISTICAL CHARACTERISTICS OF Pc1-2 WAVES NEAR THE CUSP LATITUDES[J]. ADVANCES IN POLAR SCIENCE, 2014, 26(3): 324-330.

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STATISTICAL CHARACTERISTICS OF Pc1-2 WAVES NEAR THE CUSP LATITUDES

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