Northward field excursions in Saturn's magnetotail and their relationship to magnetospheric periodicities

被引：36

作者：

Jackman, C. M. ^{[1
]}

Arridge, C. S. ^{[2
,4
]}

McAndrews, H. J. ^{[3
]}

Henderson, M. G. ^{[3
]}

Wilson, R. J. ^{[3
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Space & Atmospher Phys Grp, London SW7 2BW, England

[2] Univ Coll London, Mullard Space Sci Lab, Dept Space & Climate Phys, Dorking RH5 6NT, Surrey, England

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[4] UCL, Ctr Planetary Sci, London, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

MAGNETIC-FIELD;

D O I：

10.1029/2009GL039149

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We present results from an investigation of Cassini encounters with Saturn's magnetotail current sheet, using magnetic field and plasma data. In the first of two intervals shown, small periodic changes in the north-south component of the magnetic field are matched by periodic density enhancements associated with the plasma sheet center. In the second interval, a large plasmoid signature is observed set against a background of small-scale current sheet motions. We interpret the quasi-periodic small field deflections and density enhancements as large-scale wave-like motion of the current sheet. We stress that plasmoid signatures are of a clearly different character and occur much less frequently. Citation: Jackman, C. M., C. S. Arridge, H. J. McAndrews, M. G. Henderson, and R. J. Wilson (2009), Northward field excursions in Saturn's magnetotail and their relationship to magnetospheric periodicities, Geophys. Res. Lett., 36, L16101, doi:10.1029/2009GL039149.

引用

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