Planetary period oscillations at Saturn

Details Planetary period oscillations at Saturn Planetary period oscillations at Saturn

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm13f..02p&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM13F-02

Physics

[2756] Magnetospheric Physics / Planetary Magnetospheres

Scientific paper

Saturn's magnetosphere chimes with oscillations at periods close to the planetary rotation period. The oscillatory period changes slowly over time [Galopeau and Lecacheux, 2000; Gurnett et al., 2005, Kurth et al., 2007, 2008], with slightly different periods being observed in the Northern and southern hemispheres [Gurnett et al., 2009a, Lamy, 2011]. Both periods are observed in the equatorial plane [Provan et al., 2011]. This talk aims to explore the periodicity, phase and polarization of magnetic field oscillations on closed and open field lines, and show how these oscillations are related to the variations in the UV auroral power as observed by the Hubble spacecraft [Nichols et al., 2010a], the location of the UV auroral oval [Nichols et al., 2008,2010b, Provan et al., 2009], the position of the magnetopause and bow shock [Clarke et al., 2006, 2010a,b] and the vertical displacement and thickness of Saturn's plasma sheet.

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