Alfvén waves in the near-PSBL lobe: Cluster observations
Electromagnetic low-frequency waves in the magnetotail lobe close to the PSBL (Plasma Sheet Boundary Layer) are studied using the Cluster spacecraft. The lobe waves show Alfvénic properties and transport their wave energy (Poynting flux) on average toward the Earth along magnetic field l...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2006-05-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/24/1001/2006/angeo-24-1001-2006.pdf |
| _version_ | 1811257386792386560 |
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| author | T. Takada R. Nakamura W. Baumjohann K. Seki Z. Vörös Y. Asano M. Volwerk M. Volwerk A. Runov T. L. Zhang A. Balogh G. Paschmann R. B. Torbert B. Klecker H. Rème P. Puhl-Quinn P. Canu P. M. E. Décréau |
| author_facet | T. Takada R. Nakamura W. Baumjohann K. Seki Z. Vörös Y. Asano M. Volwerk M. Volwerk A. Runov T. L. Zhang A. Balogh G. Paschmann R. B. Torbert B. Klecker H. Rème P. Puhl-Quinn P. Canu P. M. E. Décréau |
| author_sort | T. Takada |
| collection | DOAJ |
| description | Electromagnetic low-frequency waves in the magnetotail lobe close to the
PSBL (Plasma Sheet Boundary Layer) are studied using the Cluster spacecraft.
The lobe waves show Alfvénic properties and transport their wave energy
(Poynting flux) on average toward the Earth along magnetic field lines. Most
of the wave events are rich with oxygen (O<sup>+</sup>) ion plasma. The rich O<sup>+</sup>
plasma can serve to enhance the magnetic field fluctuations, resulting in a
greater likelihood of observation, but it does not appear to be necessary
for the generation of the waves. Taking into account the fact that all events
are associated with auroral electrojet enhancements, the source of the lobe
waves might be a substorm-associated instability, i.e. some instability
near the reconnection site, or an ion beam-related instability in the PSBL. |
| first_indexed | 2024-04-12T17:56:42Z |
| format | Article |
| id | doaj.art-7ce32d48f7844d63a7d581fb4990ca04 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-04-12T17:56:42Z |
| publishDate | 2006-05-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-7ce32d48f7844d63a7d581fb4990ca042022-12-22T03:22:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762006-05-01241001101310.5194/angeo-24-1001-2006Alfvén waves in the near-PSBL lobe: Cluster observationsT. Takada0R. Nakamura1W. Baumjohann2K. Seki3Z. Vörös4Y. Asano5M. Volwerk6M. Volwerk7A. Runov8T. L. Zhang9A. Balogh10G. Paschmann11R. B. Torbert12B. Klecker13H. Rème14P. Puhl-Quinn15P. Canu16P. M. E. Décréau17Space Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSolar-Terrestrial Environment Laboratory, Nagoya University, Nagoya 464-8601, JapanSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaMax-Planck-Institut für extraterrestrische Physik, D-85741 Garching, GermanySpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, A-8042 Graz, AustriaImperial College, London SW7 2BZ, UKMax-Planck-Institut für extraterrestrische Physik, D-85741 Garching, GermanyUniversity of New Hampshire, Durham, NH 03824, USAMax-Planck-Institut für extraterrestrische Physik, D-85741 Garching, GermanyCESR/CNRS, F-31028 Toulouse Cedex 4, FranceUniversity of New Hampshire, Durham, NH 03824, USACETP/CNRS and VSQP University, F-78140 Vélizy, FranceLPCE/CNRS and Université d’Orléans, F-45071 Orléans Cedex 2, FranceElectromagnetic low-frequency waves in the magnetotail lobe close to the PSBL (Plasma Sheet Boundary Layer) are studied using the Cluster spacecraft. The lobe waves show Alfvénic properties and transport their wave energy (Poynting flux) on average toward the Earth along magnetic field lines. Most of the wave events are rich with oxygen (O<sup>+</sup>) ion plasma. The rich O<sup>+</sup> plasma can serve to enhance the magnetic field fluctuations, resulting in a greater likelihood of observation, but it does not appear to be necessary for the generation of the waves. Taking into account the fact that all events are associated with auroral electrojet enhancements, the source of the lobe waves might be a substorm-associated instability, i.e. some instability near the reconnection site, or an ion beam-related instability in the PSBL.https://www.ann-geophys.net/24/1001/2006/angeo-24-1001-2006.pdf |
| spellingShingle | T. Takada R. Nakamura W. Baumjohann K. Seki Z. Vörös Y. Asano M. Volwerk M. Volwerk A. Runov T. L. Zhang A. Balogh G. Paschmann R. B. Torbert B. Klecker H. Rème P. Puhl-Quinn P. Canu P. M. E. Décréau Alfvén waves in the near-PSBL lobe: Cluster observations Annales Geophysicae |
| title | Alfvén waves in the near-PSBL lobe: Cluster observations |
| title_full | Alfvén waves in the near-PSBL lobe: Cluster observations |
| title_fullStr | Alfvén waves in the near-PSBL lobe: Cluster observations |
| title_full_unstemmed | Alfvén waves in the near-PSBL lobe: Cluster observations |
| title_short | Alfvén waves in the near-PSBL lobe: Cluster observations |
| title_sort | alfven waves in the near psbl lobe cluster observations |
| url | https://www.ann-geophys.net/24/1001/2006/angeo-24-1001-2006.pdf |
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