GSTDTAP  > 气候变化
DOI10.1029/2020GL090921
Occurrence of EMIC Waves in the Magnetosphere According to their Distance to the Magnetopause
B. Grison; O. Santolí; k; J. Lukač; evič; M. E. Usanova
2021-01-12
发表期刊Geophysical Research Letters
出版年2021
英文摘要

Wave growth of electromagnetic ion cyclotron (EMIC) emissions observed in the outer magnetosphere is mainly controlled by compression events resulting from solar wind dynamic pressure pulses. During such events wave growth is expected to be maximum close to the magnetopause. In previous studies, distribution of EMIC waves was analyzed according to their distance from the Earth, which is inadequate for studying the magnetopause region. We map a dataset of EMIC waves observed by THEMIS spacecraft according to their distance from case‐by‐case modelled magnetopause. EMIC occurrence rate is found to be maximum within two Earth radii from the magnetopause and then it linearly decreases with an increasing distance, especially close to the local noon. Asymmetries between the morning and evening magnetic sectors are explained by asymmetries in the upstream conditions and by the presence of another EMIC population of a different origin.

领域气候变化
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/311320
专题气候变化
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GB/T 7714
B. Grison,O. Santolí,k,et al. Occurrence of EMIC Waves in the Magnetosphere According to their Distance to the Magnetopause[J]. Geophysical Research Letters,2021.
APA B. Grison,O. Santolí,k,J. Lukač,evič,&M. E. Usanova.(2021).Occurrence of EMIC Waves in the Magnetosphere According to their Distance to the Magnetopause.Geophysical Research Letters.
MLA B. Grison,et al."Occurrence of EMIC Waves in the Magnetosphere According to their Distance to the Magnetopause".Geophysical Research Letters (2021).
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