A strong high altitude narrow jet detected at Saturn's equator
Article first published online: 23 NOV 2010
Copyright 2010 by the American Geophysical Union.
Geophysical Research Letters
Volume 37, Issue 22, November 2010
How to Cite
2010), A strong high altitude narrow jet detected at Saturn's equator, Geophys. Res. Lett., 37, L22204, doi:10.1029/2010GL045434., , , , and (
- Issue published online: 23 NOV 2010
- Article first published online: 23 NOV 2010
- Manuscript Accepted: 1 OCT 2010
- Manuscript Revised: 29 SEP 2010
- Manuscript Received: 8 SEP 2010
 Here we report the discovery at the upper cloud level of an extremely narrow and strong prograde jet, centered in the middle of the broad equatorial jet. Measurements from images obtained by the Cassini Imaging Science Subsystem (ISS) show that the jet reaches 430 ms−1 ± 16 m s−1 with a peak speed difference of 180 ms−1 relative to nearby latitudes at 60 mbar and 390 ms−1 ± 23 m s−1 at depths > 500 mbar spanning ∼6° about the equator . Contrarily to what is observed in other latitudes, its velocity increases with altitude. This jet is the first of its kind to be discovered on any of the giant planets, and adds to our three-dimensional understanding of Saturn's stratospheric wind field.