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DOI: 10.1002/2016GL070008
论文题名:
Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes
作者: Ozaki M.; Shiokawa K.; Miyoshi Y.; Kataoka R.; Yagitani S.; Inoue T.; Ebihara Y.; Jun C.-W.; Nomura R.; Sakaguchi K.; Otsuka Y.; Shoji M.; Schofield I.; Connors M.; Jordanova V.K.
刊名: Geophysical Research Letters
ISSN: 0094-8822
EISSN: 1944-8553
出版年: 2016
卷: 43, 期:15
起始页码: 7859
结束页码: 7866
语种: 英语
英文关键词: fast modulation ; Pc1 geomagnetic pulsations ; pulsating proton aurora ; subpacket structure ; wave-particle interactions
Scopus关键词: CCD cameras ; Charge coupled devices ; Geomagnetism ; Particle interactions ; Wave plasma interactions ; Electron multiplying charge coupled devices ; Geomagnetic pulsation ; High-time resolution ; Magnetic equator ; Pitch-angle scattering ; Proton aurora ; Temporal features ; Wave-particle interactions ; Modulation
英文摘要: To understand the role of electromagnetic ion cyclotron (EMIC) waves in determining the temporal features of pulsating proton aurora (PPA) via wave-particle interactions at subauroral latitudes, high-time-resolution (1/8 s) images of proton-induced N2 + emissions were recorded using a new electron multiplying charge-coupled device camera, along with related Pc1 pulsations on the ground. The observed Pc1 pulsations consisted of successive rising-tone elements with a spacing for each element of 100 s and subpacket structures, which manifest as amplitude modulations with a period of a few tens of seconds. In accordance with the temporal features of the Pc1 pulsations, the auroral intensity showed a similar repetition period of 100 s and an unpredicted fast modulation of a few tens of seconds. These results indicate that PPA is generated by pitch angle scattering, nonlinearly interacting with Pc1/EMIC waves at the magnetic equator. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981333781&doi=10.1002%2f2016GL070008&partnerID=40&md5=5b29587619e67a6a3c199abebef2a1be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9785
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Japan

Recommended Citation:
Ozaki M.,Shiokawa K.,Miyoshi Y.,et al. Fast modulations of pulsating proton aurora related to subpacket structures of Pc1 geomagnetic pulsations at subauroral latitudes[J]. Geophysical Research Letters,2016-01-01,43(15).
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