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Multievent Study of Characteristics and Propagation of Naturally Occurring ELF/VLF Waves Using High‐Latitude Ground Observations and Conjunctions With the Arase Satellite
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SYSNO ASEP 0539564 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Multievent Study of Characteristics and Propagation of Naturally Occurring ELF/VLF Waves Using High‐Latitude Ground Observations and Conjunctions With the Arase Satellite Author(s) Martinez-Calderon, C. (JP)
Katoh, Y. (JP)
Manninen, J. (FI)
Santolík, Ondřej (UFA-U) RID, ORCID
Kasahara, Y. (JP)
Matsuda, S. (JP)
Kumamoto, A. (JP)
Tsuchiya, F. (JP)
Matsuoka, A. (JP)
Shoji, M. (JP)
Teramoto, M. (JP)
Shinohara, I. (JP)
Shiokawa, K. (JP)
Miyoshi, Y. (JP)Number of authors 14 Article number e2020JA028682 Source Title Journal of Geophysical Research-Space Physics. - : Wiley - ISSN 2169-9380
Roč. 126, č. 2 (2021)Number of pages 14 s. Language eng - English Country US - United States Keywords Arase ; conjugated event ; ERG ; ionospheric exit point ; VLF ; whistler ; mode waves Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) Method of publishing Limited access Institutional support UFA-U - RVO:68378289 UT WOS 000627265100065 EID SCOPUS 85102190060 DOI 10.1029/2020JA028682 Annotation We report the properties of the ionospheric exit point and characteristics of several types of very low frequency waves, including chorus and quasiperiodic emissions, based on a comprehensive dataset of simultaneous observations between ground and space. Whistler‐mode waves were observed at Kannuslehto (L = 5.5, KAN), Finland, and in the inner magnetosphere by the Japanese Arase satellite. During the 2017–2018 winter campaign, we found 13 cases showing one‐to‐one correspondence of wave spectra between KAN and Arase. This is the first time that such a large number of conjugated events have been reported at once. The duration of the events ranged from a few minutes up to 3 h, with 90% of events detected in the afternoon sector. While the occurrence rate is higher during daytime, this can also be related to a majority of the detected waves being quasiperiodic emissions, a known dayside phenomenon. Arase was usually located within 30° of the equator, at L ∼4–5, and detected mostly waves propagating at oblique angles (≥20°). Frequently, the ionospheric magnetic footprint of Arase was located equatorwards (south) from KAN, often in the same geographical area. We investigated the probable location of the ionospheric exit point of the waves from the location of the footprint of Arase and the angle of arrival of waves detected at KAN. Using density measurements at Arase we discuss magnetospheric wave propagatio: we find that, in most cases, waves were unducted in their propagation from the satellite to the ground. Workplace Institute of Atmospheric Physics Contact Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Year of Publishing 2022 Electronic address https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020JA028682
Number of the records: 1