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A Statistical Study of Longitudinal Extent of Pc1 Pulsations Using Seven PWING Ground Stations at Subauroral Latitudes

https://doi.org/10.1029/2021JA029987

Liu, Jie; Shiokawa, Kazuo; Oyama, Shin‐Ichiro; Otsuka, Yuichi; Jun, Chae‐Woo; Nosé, Masahito; Nagatsuma, Tsutomu; Sakaguchi, Kaori; Kadokura, Akira; Ozaki, Mitsunori; et al (January 2023, Journal of Geophysical Research: Space Physics)

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Ground-based instruments of the PWING project to investigate dynamics of the inner magnetosphere at subauroral latitudes as a part of the ERG-ground coordinated observation network

https://doi.org/10.1186/s40623-017-0745-9

Shiokawa, Kazuo; Katoh, Yasuo; Hamaguchi, Yoshiyuki; Yamamoto, Yuka; Adachi, Takumi; Ozaki, Mitsunori; Oyama, Shin-Ichiro; Nosé, Masahito; Nagatsuma, Tsutomu; Tanaka, Yoshimasa; et al (December 2017, Earth, Planets and Space)

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Isolated Proton Aurora Driven by EMIC Pc1 Wave: PWING, Swarm, and NOAA POES Multi‐Instrument Observations

https://doi.org/10.1029/2021GL095090

Kim, Hyangpyo; Shiokawa, Kazuo; Park, Jaeheung; Miyoshi, Yoshizumi; Miyashita, Yukinaga; Stolle, Claudia; Connor, Hyunju Kim; Hwang, Junga; Buchert, Stephan; Kwon, Hyuck‐Jin; et al (September 2021, Geophysical Research Letters)

Abstract We report the concurrent observations of F‐region plasma changes and field‐aligned currents (FACs) above isolated proton auroras (IPAs) associated with electromagnetic ion cyclotron Pc1 waves. Key events on March 19, 2020 and September 12, 2018 show that ground magnetometers and all‐sky imagers detected concurrent Pc1 wave and IPA, during which NOAA POES observed precipitating energetic protons. In the ionospheric F‐layer above the IPA zone, the Swarm satellites observed transverse Pc1 waves, which span wider latitudes than IPA. Around IPA, Swarm also detected the bipolar FAC and localized plasma density enhancement, which is occasionally surrounded by wide/shallow depletion. This indicates that wave‐induced proton precipitation contributes to the energy transfer from the magnetosphere to the ionosphere.
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