Magnetospheric ULF waves driven by external sources
The multi-spacecraft missions (Cluster and THEMIS) observations allowed to collect large data base for Ultra Low Frequency (ULF) waves properties, their localization, and sources. Here we focused mainly on these recent results. Studies of the source and characteristics of ULF waves can help in the u...
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| Published in: | Advances in Astronomy and Space Physics |
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| Date: | 2013 |
| Main Authors: | , |
| Format: | Article |
| Language: | English |
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Головна астрономічна обсерваторія НАН України
2013
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/119421 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Magnetospheric ULF waves driven by external sources / O.V. Agapitov, O.K. Cheremnykh // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 12-19. — Бібліогр.: 76 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862719152279519232 |
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| author | Agapitov, O.V. Cheremnykh, O.K. |
| author_facet | Agapitov, O.V. Cheremnykh, O.K. |
| citation_txt | Magnetospheric ULF waves driven by external sources / O.V. Agapitov, O.K. Cheremnykh // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 12-19. — Бібліогр.: 76 назв. — англ. |
| collection | DSpace DC |
| container_title | Advances in Astronomy and Space Physics |
| description | The multi-spacecraft missions (Cluster and THEMIS) observations allowed to collect large data base for Ultra Low Frequency (ULF) waves properties, their localization, and sources. Here we focused mainly on these recent results. Studies of the source and characteristics of ULF waves can help in the understanding of the interaction and energy transport from the solar wind to the magnetosphere. In the presented paper peculiarities of the ULF waves are presented in depends of their generation source: surface magnetopause instabilities, magnetospheric cavity modes, and solar wind sudden impulses (SI). Permanent observations of the ULF waves involve existence of the permanent source and, as the previous studies showed, the contributions to Pc4-Pc5 ULF wave power from the external sources are larger than the contribution from internal magnetosphere sources. The Kelvin-Helmholtz instability (KHI) can generate classical ULF resonant waves with spatially localized amplitude maximum on the magnetosphere flanks. As observations show the constraint satisfaction of KHI development is quite rare. SI in the solar wind dynamic pressure generate ULF waves with different polarization and frequency close to the frequency of the local field line resonance (FLR). Wide range of temporal and amplitude characteristics of the solar wind dynamics can generate magnetosphere cavity modes and magnetosonic perturbations which penetrate through the magnetosphere and can couple with the local FLR modes. The observed dependence of ULF waves properties on their localization corresponds well to these sources and their occurrence.
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| first_indexed | 2025-12-07T18:19:06Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-119421 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 2227-1481 |
| language | English |
| last_indexed | 2025-12-07T18:19:06Z |
| publishDate | 2013 |
| publisher | Головна астрономічна обсерваторія НАН України |
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| spelling | Agapitov, O.V. Cheremnykh, O.K. 2017-06-06T19:06:16Z 2017-06-06T19:06:16Z 2013 Magnetospheric ULF waves driven by external sources / O.V. Agapitov, O.K. Cheremnykh // Advances in Astronomy and Space Physics. — 2013. — Т. 3., вип. 1. — С. 12-19. — Бібліогр.: 76 назв. — англ. 2227-1481 https://nasplib.isofts.kiev.ua/handle/123456789/119421 The multi-spacecraft missions (Cluster and THEMIS) observations allowed to collect large data base for Ultra Low Frequency (ULF) waves properties, their localization, and sources. Here we focused mainly on these recent results. Studies of the source and characteristics of ULF waves can help in the understanding of the interaction and energy transport from the solar wind to the magnetosphere. In the presented paper peculiarities of the ULF waves are presented in depends of their generation source: surface magnetopause instabilities, magnetospheric cavity modes, and solar wind sudden impulses (SI). Permanent observations of the ULF waves involve existence of the permanent source and, as the previous studies showed, the contributions to Pc4-Pc5 ULF wave power from the external sources are larger than the contribution from internal magnetosphere sources. The Kelvin-Helmholtz instability (KHI) can generate classical ULF resonant waves with spatially localized amplitude maximum on the magnetosphere flanks. As observations show the constraint satisfaction of KHI development is quite rare. SI in the solar wind dynamic pressure generate ULF waves with different polarization and frequency close to the frequency of the local field line resonance (FLR). Wide range of temporal and amplitude characteristics of the solar wind dynamics can generate magnetosphere cavity modes and magnetosonic perturbations which penetrate through the magnetosphere and can couple with the local FLR modes. The observed dependence of ULF waves properties on their localization corresponds well to these sources and their occurrence. Authors thank to Science Data Center of JHU/APL for AMPTE/CCE FGM dataset, V. Angelopoulos and THEMIS team for providing THEMIS FGM and ESA datasets, CDAWeb for providing Cluster, Polar, and Wind datasets which are shown in the paper. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Magnetospheric ULF waves driven by external sources Article published earlier |
| spellingShingle | Magnetospheric ULF waves driven by external sources Agapitov, O.V. Cheremnykh, O.K. |
| title | Magnetospheric ULF waves driven by external sources |
| title_full | Magnetospheric ULF waves driven by external sources |
| title_fullStr | Magnetospheric ULF waves driven by external sources |
| title_full_unstemmed | Magnetospheric ULF waves driven by external sources |
| title_short | Magnetospheric ULF waves driven by external sources |
| title_sort | magnetospheric ulf waves driven by external sources |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/119421 |
| work_keys_str_mv | AT agapitovov magnetosphericulfwavesdrivenbyexternalsources AT cheremnykhok magnetosphericulfwavesdrivenbyexternalsources |