Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I)
From the magnetic pulsation data recorded at the Syowa Station-Iceland conjugate pair, it is found that there are at least two pulsation bands in the Pc 3-5 frequency range in the daytime. 0ne pulsation band occurs in the 20-40 mHz range, while the other band occurs in the 4-8 mHz range, often indep...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
National Institute of Polar Research
1980
|
Subjects: | |
Online Access: | https://doi.org/10.15094/00008138 https://doaj.org/article/a18477f0d9ef47798bc11c5382530e3b |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:a18477f0d9ef47798bc11c5382530e3b |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:a18477f0d9ef47798bc11c5382530e3b 2023-05-15T16:47:51+02:00 Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) Miyoko IWABUCHI Hiroshi FUKUNISHI Natsuo SATO 1980-02-01 https://doi.org/10.15094/00008138 https://doaj.org/article/a18477f0d9ef47798bc11c5382530e3b en other eng National Institute of Polar Research doi:10.15094/00008138 0085-7289 2432-079X https://doaj.org/article/a18477f0d9ef47798bc11c5382530e3b undefined Antarctic Record, Iss 68, Pp 294-310 (1980) geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 1980 fttriple https://doi.org/10.15094/00008138 2023-01-22T19:27:05Z From the magnetic pulsation data recorded at the Syowa Station-Iceland conjugate pair, it is found that there are at least two pulsation bands in the Pc 3-5 frequency range in the daytime. 0ne pulsation band occurs in the 20-40 mHz range, while the other band occurs in the 4-8 mHz range, often independently of the 20-40 mHz band. The f-t spectral patterns of these pulsations are quite similar at the coniugate points, with the wave phase characteristics of odd-mode standing oscillations of local magnetic field lines. It is also found that the orientation angles of the polarization ellipses in the H-D plane switch across the magnetic local noon. These results suggest that the 20-40 mHz band and the 4-8 mHz band are standing oscillations of resonant field lines excited by external driving forces such as the Kelvin-Helmholtz instability on the magnetopause and/or the MHD waves generated near the bow shock Article in Journal/Newspaper Iceland Unknown Syowa Station |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo |
spellingShingle |
geo Miyoko IWABUCHI Hiroshi FUKUNISHI Natsuo SATO Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
topic_facet |
geo |
description |
From the magnetic pulsation data recorded at the Syowa Station-Iceland conjugate pair, it is found that there are at least two pulsation bands in the Pc 3-5 frequency range in the daytime. 0ne pulsation band occurs in the 20-40 mHz range, while the other band occurs in the 4-8 mHz range, often independently of the 20-40 mHz band. The f-t spectral patterns of these pulsations are quite similar at the coniugate points, with the wave phase characteristics of odd-mode standing oscillations of local magnetic field lines. It is also found that the orientation angles of the polarization ellipses in the H-D plane switch across the magnetic local noon. These results suggest that the 20-40 mHz band and the 4-8 mHz band are standing oscillations of resonant field lines excited by external driving forces such as the Kelvin-Helmholtz instability on the magnetopause and/or the MHD waves generated near the bow shock |
format |
Article in Journal/Newspaper |
author |
Miyoko IWABUCHI Hiroshi FUKUNISHI Natsuo SATO |
author_facet |
Miyoko IWABUCHI Hiroshi FUKUNISHI Natsuo SATO |
author_sort |
Miyoko IWABUCHI |
title |
Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_short |
Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_full |
Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_fullStr |
Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_full_unstemmed |
Spectral and Polarization Characteristics of Pc 3-5 Magnetic Pulsations Observed at the Syowa Station-Iceland Conjugate Pair (d. ULF Waves in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I) |
title_sort |
spectral and polarization characteristics of pc 3-5 magnetic pulsations observed at the syowa station-iceland conjugate pair (d. ulf waves in the magnetosphere) (proceedings of the second symposium on coordinated observations of the ionosphere and magnetosphere in the polar regions : part i) |
publisher |
National Institute of Polar Research |
publishDate |
1980 |
url |
https://doi.org/10.15094/00008138 https://doaj.org/article/a18477f0d9ef47798bc11c5382530e3b |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Antarctic Record, Iss 68, Pp 294-310 (1980) |
op_relation |
doi:10.15094/00008138 0085-7289 2432-079X https://doaj.org/article/a18477f0d9ef47798bc11c5382530e3b |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00008138 |
_version_ |
1766037956824399872 |