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

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 Zusammenfassung: 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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Sprache(n): eng - Englisch
 Datum: 2021-022021
 Publikationsstatus: Final veröffentlicht
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 Identifikatoren: DOI: 10.1029/2020GL090921
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Projektname : PAGER
Grant ID : 870452
Förderprogramm : Horizon 2020 (H2020)
Förderorganisation : European Commission (EC)

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Titel: Geophysical Research Letters
Genre der Quelle: Zeitschrift, SCI, Scopus, ab 2023 oa
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 48 Artikelnummer: e2020GL090921 Start- / Endseite: - Identifikator: ISSN: 1944-8007
ISSN: 0094-8276
CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals182