A statistical and event study of magnetotail dipolarization fronts
A study of dipolarization fronts of the Earth's magnetotail has been performed using seven years (2001–2007) of Cluster data. Events both with and without high-speed earthward flows are included. A superposed epoch analysis of the data shows that the dipolarization is preceeded by a decrease...
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Copernicus Publications
2011-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/29/1537/2011/angeo-29-1537-2011.pdf |
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doaj-6484bb0359ef4e6dbbc1d4eb864f3acf2020-11-24T22:39:46ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762011-09-01291537154710.5194/angeo-29-1537-2011A statistical and event study of magnetotail dipolarization frontsD. Schmid0D. Schmid1M. Volwerk2R. Nakamura3W. Baumjohann4M. Heyn5Space Research Institute, Austrian Academy of Sciences, 8042 Graz, AustriaInstitute for Theoretical Physics, Technical University Graz, 8010 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, 8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, 8042 Graz, AustriaSpace Research Institute, Austrian Academy of Sciences, 8042 Graz, AustriaInstitute for Theoretical Physics, Technical University Graz, 8010 Graz, AustriaA study of dipolarization fronts of the Earth's magnetotail has been performed using seven years (2001–2007) of Cluster data. Events both with and without high-speed earthward flows are included. A superposed epoch analysis of the data shows that the dipolarization is preceeded by a decrease of <I>B</I><sub>z</sub> before the increase. The duration of the dipolarization tends to be decreasing with increasing velocity of the plasma flows. The thickness of the dipolarization front is on average 1.8 plasma inertial lengths, independent of the plasma velocity. We find that the events fall into two categories: Earthward and tailward moving dipolarizations. The dipolarization fronts can be assumed to be tangential discontinuities and the currents on the front have mainly a perpendicular component.https://www.ann-geophys.net/29/1537/2011/angeo-29-1537-2011.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
D. Schmid D. Schmid M. Volwerk R. Nakamura W. Baumjohann M. Heyn |
| spellingShingle |
D. Schmid D. Schmid M. Volwerk R. Nakamura W. Baumjohann M. Heyn A statistical and event study of magnetotail dipolarization fronts Annales Geophysicae |
| author_facet |
D. Schmid D. Schmid M. Volwerk R. Nakamura W. Baumjohann M. Heyn |
| author_sort |
D. Schmid |
| title |
A statistical and event study of magnetotail dipolarization fronts |
| title_short |
A statistical and event study of magnetotail dipolarization fronts |
| title_full |
A statistical and event study of magnetotail dipolarization fronts |
| title_fullStr |
A statistical and event study of magnetotail dipolarization fronts |
| title_full_unstemmed |
A statistical and event study of magnetotail dipolarization fronts |
| title_sort |
statistical and event study of magnetotail dipolarization fronts |
| publisher |
Copernicus Publications |
| series |
Annales Geophysicae |
| issn |
0992-7689 1432-0576 |
| publishDate |
2011-09-01 |
| description |
A study of dipolarization fronts of the Earth's magnetotail has been
performed using seven years (2001–2007) of Cluster data. Events both with and
without high-speed earthward flows are included. A superposed epoch analysis
of the data shows that the dipolarization is preceeded by a decrease of
<I>B</I><sub>z</sub> before the increase. The duration of the dipolarization tends to
be decreasing with increasing velocity of the plasma flows. The thickness of
the dipolarization front is on average 1.8 plasma inertial lengths,
independent of the plasma velocity. We find that the events fall into two
categories: Earthward and tailward moving dipolarizations. The dipolarization
fronts can be assumed to be tangential discontinuities and the currents on
the front have mainly a perpendicular component. |
| url |
https://www.ann-geophys.net/29/1537/2011/angeo-29-1537-2011.pdf |
| work_keys_str_mv |
AT dschmid astatisticalandeventstudyofmagnetotaildipolarizationfronts AT dschmid astatisticalandeventstudyofmagnetotaildipolarizationfronts AT mvolwerk astatisticalandeventstudyofmagnetotaildipolarizationfronts AT rnakamura astatisticalandeventstudyofmagnetotaildipolarizationfronts AT wbaumjohann astatisticalandeventstudyofmagnetotaildipolarizationfronts AT mheyn astatisticalandeventstudyofmagnetotaildipolarizationfronts AT dschmid statisticalandeventstudyofmagnetotaildipolarizationfronts AT dschmid statisticalandeventstudyofmagnetotaildipolarizationfronts AT mvolwerk statisticalandeventstudyofmagnetotaildipolarizationfronts AT rnakamura statisticalandeventstudyofmagnetotaildipolarizationfronts AT wbaumjohann statisticalandeventstudyofmagnetotaildipolarizationfronts AT mheyn statisticalandeventstudyofmagnetotaildipolarizationfronts |
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1725707731049906176 |