Spectral scaling in the turbulent Earth's plasma sheet revisited
Bursty bulk flow associated magnetic fluctuations exhibit at least three spectral scaling ranges in the Earth's plasma sheet. Two of the three scaling ranges can be associated with multi-scale magnetohydrodynamic turbulence between the spatial scales from ~100 km to several <i>...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2007-08-01
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| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/14/535/2007/npg-14-535-2007.pdf |
| _version_ | 1818540942224785408 |
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| author | Z. Vörös W. Baumjohann R. Nakamura A. Runov M. Volwerk Y. Asano D. Jankovičová E. A. Lucek H. Rème |
| author_facet | Z. Vörös W. Baumjohann R. Nakamura A. Runov M. Volwerk Y. Asano D. Jankovičová E. A. Lucek H. Rème |
| author_sort | Z. Vörös |
| collection | DOAJ |
| description | Bursty bulk flow associated magnetic fluctuations exhibit at least three spectral scaling ranges in the Earth's plasma sheet. Two of the three scaling ranges can be associated with multi-scale magnetohydrodynamic turbulence between the spatial scales from ~100 km to several <i>R<sub>E</sub></i> (<i>R<sub>E</sub></i> is the Earth's radius). These scales include the inertial range and below ~0.5 <i>R<sub>E</sub></i> a steepened scaling range, theoretically not fully understood yet. It is shown that, in the near-Earth plasma sheet, the inertial range can be robustly identified only if multi-scale quasi stationary (MSQS) data intervals are selected. Multiple bursty flow associated magnetic fluctuations, however, exhibit 1/<i>f</i> type scaling indicating that large-scale fluctuations are controlled by multiple uncorrelated driving sources of the bulk flows (e.g. magnetic reconnection, instabilities). |
| first_indexed | 2024-12-11T22:02:01Z |
| format | Article |
| id | doaj.art-dd3a9534a68146d780c00dd8edf02fde |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-12-11T22:02:01Z |
| publishDate | 2007-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-dd3a9534a68146d780c00dd8edf02fde2022-12-22T00:49:04ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462007-08-01144535541Spectral scaling in the turbulent Earth's plasma sheet revisitedZ. VörösW. BaumjohannR. NakamuraA. RunovM. VolwerkY. AsanoD. JankovičováE. A. LucekH. RèmeBursty bulk flow associated magnetic fluctuations exhibit at least three spectral scaling ranges in the Earth's plasma sheet. Two of the three scaling ranges can be associated with multi-scale magnetohydrodynamic turbulence between the spatial scales from ~100 km to several <i>R<sub>E</sub></i> (<i>R<sub>E</sub></i> is the Earth's radius). These scales include the inertial range and below ~0.5 <i>R<sub>E</sub></i> a steepened scaling range, theoretically not fully understood yet. It is shown that, in the near-Earth plasma sheet, the inertial range can be robustly identified only if multi-scale quasi stationary (MSQS) data intervals are selected. Multiple bursty flow associated magnetic fluctuations, however, exhibit 1/<i>f</i> type scaling indicating that large-scale fluctuations are controlled by multiple uncorrelated driving sources of the bulk flows (e.g. magnetic reconnection, instabilities).http://www.nonlin-processes-geophys.net/14/535/2007/npg-14-535-2007.pdf |
| spellingShingle | Z. Vörös W. Baumjohann R. Nakamura A. Runov M. Volwerk Y. Asano D. Jankovičová E. A. Lucek H. Rème Spectral scaling in the turbulent Earth's plasma sheet revisited Nonlinear Processes in Geophysics |
| title | Spectral scaling in the turbulent Earth's plasma sheet revisited |
| title_full | Spectral scaling in the turbulent Earth's plasma sheet revisited |
| title_fullStr | Spectral scaling in the turbulent Earth's plasma sheet revisited |
| title_full_unstemmed | Spectral scaling in the turbulent Earth's plasma sheet revisited |
| title_short | Spectral scaling in the turbulent Earth's plasma sheet revisited |
| title_sort | spectral scaling in the turbulent earth apos s plasma sheet revisited |
| url | http://www.nonlin-processes-geophys.net/14/535/2007/npg-14-535-2007.pdf |
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