Saturn's rotation period from its atmospheric planetary-wave configuration

Details Saturn's rotation period from its atmospheric planetary-wave configuration Saturn's rotation period from its atmospheric planetary-wave configuration

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009natur.460..608r&link_type=abstract

Nature, Volume 460, Issue 7255, pp. 608-610 (2009).

Physics

20

Scientific paper

The rotation period of a gas giant's magnetic field (called the System III reference frame) is commonly used to infer its bulk rotation. Saturn's dipole magnetic field is not tilted relative to its rotation axis (unlike Jupiter, Uranus and Neptune), so the surrogate measure of its long-wavelength (kilometric) radiation is currently used to fix the System III rotation period. The period as measured now by the Cassini spacecraft is up to ~7min longer than the value of 10h 39min 24s measured 28years ago by Voyager. Here we report a determination of Saturn's rotation period based on an analysis of potential vorticity. The resulting reference frame (which we call System IIIw) rotates with a period of 10h 34min 13+/-20s. This shifted reference frame is consistent with a pattern of alternating jets on Saturn that is more symmetrical between eastward and westward flow. This suggests that Saturn's winds are much more like those of Jupiter than hitherto believed.

Affiliated with

Also associated with

No associations

Rating

Saturn's rotation period from its atmospheric planetary-wave configuration 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 Saturn's rotation period from its atmospheric planetary-wave configuration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Saturn's rotation period from its atmospheric planetary-wave configuration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-766665