Magnetic signatures of plasma-depleted flux tubes in the Saturnian inner magnetosphere
Initial Cassini observations have revealed evidence for interchanging magnetic flux tubes in the inner Saturnian magnetosphere. Some of the reported flux tubes differ remarkably by their magnetic signatures, having a depressed or enhanced magnetic pressure relative to their surroundings. The ones wi...
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| Veröffentlicht in: | Geophysical research letters 2007-07, Vol.34 (14), p.L14108-n/a |
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| creator | André, N. Persoon, A. M. Goldstein, J. Burch, J. L. Louarn, P. Lewis, G. R. Rymer, A. M. Coates, A. J. Kurth, W. S. Sittler Jr, E. C. Thomsen, M. F. Crary, F. J. Dougherty, M. K. Gurnett, D. A. Young, D. T. |
| description | Initial Cassini observations have revealed evidence for interchanging magnetic flux tubes in the inner Saturnian magnetosphere. Some of the reported flux tubes differ remarkably by their magnetic signatures, having a depressed or enhanced magnetic pressure relative to their surroundings. The ones with stronger fields have been interpreted previously as either outward moving mass‐loaded or inward moving plasma‐depleted flux tubes based on magnetometer observations only. We use detailed multi‐instrumental observations of small and large density depletions in the inner Saturnian magnetosphere from Cassini Rev. A orbit that enable us to discriminate amongst the two previous and opposite interpretations. Our analysis undoubtedly confirms the similar nature of both types of reported interchanging magnetic flux tubes, which are plasma‐depleted, whatever their magnetic signatures are. Their different magnetic signature is clearly an effect associated with latitude. These Saturnian plasma‐depleted flux tubes ultimately may play a similar role as the Jovian ones. |
| doi_str_mv | 10.1029/2007GL030374 |
| format | Article |
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M. ; Goldstein, J. ; Burch, J. L. ; Louarn, P. ; Lewis, G. R. ; Rymer, A. M. ; Coates, A. J. ; Kurth, W. S. ; Sittler Jr, E. C. ; Thomsen, M. F. ; Crary, F. J. ; Dougherty, M. K. ; Gurnett, D. A. ; Young, D. T.</creator><creatorcontrib>André, N. ; Persoon, A. M. ; Goldstein, J. ; Burch, J. L. ; Louarn, P. ; Lewis, G. R. ; Rymer, A. M. ; Coates, A. J. ; Kurth, W. S. ; Sittler Jr, E. C. ; Thomsen, M. F. ; Crary, F. J. ; Dougherty, M. K. ; Gurnett, D. A. ; Young, D. T.</creatorcontrib><description>Initial Cassini observations have revealed evidence for interchanging magnetic flux tubes in the inner Saturnian magnetosphere. Some of the reported flux tubes differ remarkably by their magnetic signatures, having a depressed or enhanced magnetic pressure relative to their surroundings. The ones with stronger fields have been interpreted previously as either outward moving mass‐loaded or inward moving plasma‐depleted flux tubes based on magnetometer observations only. We use detailed multi‐instrumental observations of small and large density depletions in the inner Saturnian magnetosphere from Cassini Rev. A orbit that enable us to discriminate amongst the two previous and opposite interpretations. Our analysis undoubtedly confirms the similar nature of both types of reported interchanging magnetic flux tubes, which are plasma‐depleted, whatever their magnetic signatures are. Their different magnetic signature is clearly an effect associated with latitude. 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Some of the reported flux tubes differ remarkably by their magnetic signatures, having a depressed or enhanced magnetic pressure relative to their surroundings. The ones with stronger fields have been interpreted previously as either outward moving mass‐loaded or inward moving plasma‐depleted flux tubes based on magnetometer observations only. We use detailed multi‐instrumental observations of small and large density depletions in the inner Saturnian magnetosphere from Cassini Rev. A orbit that enable us to discriminate amongst the two previous and opposite interpretations. Our analysis undoubtedly confirms the similar nature of both types of reported interchanging magnetic flux tubes, which are plasma‐depleted, whatever their magnetic signatures are. Their different magnetic signature is clearly an effect associated with latitude. These Saturnian plasma‐depleted flux tubes ultimately may play a similar role as the Jovian ones.</description><subject>Cassini</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Magnetospheric configuration and dynamics</subject><subject>Magnetospheric Physics</subject><subject>Planetary magnetospheres</subject><subject>Plasma waves and instabilities</subject><subject>plasma-depleted flux tubes</subject><subject>Plasmasphere</subject><subject>transport</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNp90E1v1DAQBmALgcSycONOLnAiZfyROD6iii5I21Zq-ThaE2e8DWSTYCei_fd4m6qFS0-2Zp55NRrGXnM44iDMBwGgN1uQILV6wlbcKJVXqfaUrQBM-gtdPmcvYvwJcFB8xb6f4q6nqXVZbHc9TnOgmA0-GzuMe8wbGjuaqMl8N19n01ynbttn0xVllwfct9inQk8h298GDXG8okAv2TOPXaRXd--afTv59PX4c74933w5_rjNUUkDucCGSlSuqIlXKJ0xta5LY5RRBanCuQK9r01RSRKV9qCcU66RvJBc-co0cs3eLbljGH7PFCe7b6OjrsOehjlaAbKUoEWC7xfowhBjIG_H0O4x3FgO9nA8--_xEn97l4vRYecD9q6NDzMGpNRgkhOL-9N2dPNopt1cbIWUaaM1y5ehNk50fT-E4ZcttdSF_XG2serCSOAnl_Ys-TeLx918r_9b9y_RqZY5</recordid><startdate>200707</startdate><enddate>200707</enddate><creator>André, N.</creator><creator>Persoon, A. 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| ispartof | Geophysical research letters, 2007-07, Vol.34 (14), p.L14108-n/a |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Access via Wiley Online Library; Wiley-Blackwell AGU Digital Library; Wiley Online Library (Open Access Collection) |
| subjects | Cassini Earth sciences Earth, ocean, space Exact sciences and technology Magnetospheric configuration and dynamics Magnetospheric Physics Planetary magnetospheres Plasma waves and instabilities plasma-depleted flux tubes Plasmasphere transport |
| title | Magnetic signatures of plasma-depleted flux tubes in the Saturnian inner magnetosphere |
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