Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current

Details Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm11a2007r&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SM11A-2007

Physics

[2730] Magnetospheric Physics / Magnetosphere: Inner, [5719] Planetary Sciences: Fluid Planets / Interactions With Particles And Fields, [6275] Planetary Sciences: Solar System Objects / Saturn

Scientific paper

Using data taken by the Cassini MAG instrument in 2005 and 2006, we apply the spectrum analysis technique adopted by Gurnett et al. [2007], which fits a sine wave to the normalized SKR amplitude, iteratively sweeping the period to determine the period(s) for which the sine fit has its maximum amplitude. We find that the amplitude of the magnetic pressure variation in the equatorial plane between 6 and 15 Rs maximizes at the SLS4 South frequency, with a secondary maximum that falls near the SLS4 North frequency. We also identify weak but consistent signatures of both the SLS4N frequency and the SLS4S frequency in the total ion pressure in Saturn's equatorial region. In this presentation we expand our initial study to include the more recent equatorial orbits in 2009-2010. This interval is of particular interest, as it coincides with the equinox and subsequent "cross-over" of the SLS North and South frequencies, as reported by Gurnett et al. [2009] and Lamy [2010]. We report an anti-phase relationship between variations in thermal plasma pressure and magnetic pressure, assuming that both rotate at the SLS4 South rate. We will examine whether the amplitude of the periodic signal in the magnetic pressure and RPWS electron density varies with local time.

Affiliated with

Also associated with

No associations

Rating

Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plasma and Magnetic Periodicities in Saturn's Equatorial Ring Current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1889082