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  Occurrence of EMIC Waves in the Magnetosphere According to Their Distance to the Magnetopause

Grison, B., Santolík, O., Lukačevič, J., Usanova, M. E. (2021): Occurrence of EMIC Waves in the Magnetosphere According to Their Distance to the Magnetopause. - Geophysical Research Letters, 48, e2020GL090921.
https://doi.org/10.1029/2020GL090921

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5010786 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5010786_3
Genre: Journal Article

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 Creators:
Grison, B.1, Author
Santolík, O.1, Author
Lukačevič, J.1, Author
Usanova, M. E.1, Author
Affiliations:
1PAGER project, External Organizations, https://www.spacepager.eu/, ou_5010784              

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 Abstract: 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 data set of EMIC waves observed by Time History of Events and Macroscale Interactions during Substorms (THEMIS) spacecraft according to their distance from case-by-case modeled 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.

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Language(s): eng - English
 Dates: 2021-022021
 Publication Status: Finally published
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1029/2020GL090921
 Degree: -

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Project name : PAGER
Grant ID : 870452
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Geophysical Research Letters
Source Genre: Journal, SCI, Scopus, ab 2023 oa
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Pages: - Volume / Issue: 48 Sequence Number: e2020GL090921 Start / End Page: - Identifier: ISSN: 1944-8007
ISSN: 0094-8276
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals182