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Simultaneous observations of ducted Pc1 waves at multi-stations in Antarctica

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Title
Simultaneous observations of ducted Pc1 waves at multi-stations in Antarctica
Other Titles
남극 자력계 사이트에서 동시 관측된 전리권 전파 Pc1 파동 연구
Authors
Kwon, Hyuck-Jin
Jee, Geonhwa
Lee, Changsup
Kim, Khan-Hyuk
Issue Date
2020
Citation
Kwon, Hyuck-Jin, et al. 2020. Simultaneous observations of ducted Pc1 waves at multi-stations in Antarctica. 2020 KSSS(Korea Space Science Society) Fall Meeting. Jeju Shinhwa World Resort. 2020.10.28~2020.10.30.
Abstract
Electromagnetic ion cyclotron (EMIC) waves generated in the equatorial plane, propagate from the magnetosphere to the ionosphere along field lines and convert to compressional waves by mode-conversion. Such propagated waves are observed in the Pc1 band (0.2-5 Hz) on the ground and horizontally propagate through the maximum electron density region in the ionosphere. Korea Polar Research Institute has been operated the array of search-coil magnetometers with identical system at Jang Bogo Station, (JBS, -74.4° geographic latitude, 164.1° geographic longitude), Neumayer (VNA, -70.4° geographic latitude, -8.2° geographic longitude), and King Sejong Station (KSS, -62.1° geographic latitude, -58.5° geographic longitude). We statistically examined the spectral features of Pc1 waves simultaneously identified at JBS, VNA, and KSS. It is found that the amplitude of Pc1 waves rapidly reduced as they propagate to lower latitude than higher latitude. We also confirmed the Pc1 waves in the ionosphere when Swarm spacecraft pass over near VNA. We found that the frequency of Pc1 waves at Swarm slightly higher than those on the ground. We suggested that this difference of frequency due to Doppler effect at Swarm.
URI
https://repository.kopri.re.kr/handle/201206/12408
Conference Name
2020 KSSS(Korea Space Science Society) Fall Meeting
Conference Place
Jeju Shinhwa World Resort
Conference Date
2020.10.28~2020.10.30
Appears in Collections  
2020-2020, Occurrence of aurora and their correlations with polar upper atmospheric and climate variabilities (20-20) / Jee, Geonhwa (PE20100)
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