A strong high altitude narrow jet detected at Saturn's equator

Details A strong high altitude narrow jet detected at Saturn's equator A strong high altitude narrow jet detected at Saturn's equator

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3722204g&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 22, CiteID L22204

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3

Planetary Sciences: Solar System Objects: Saturn, Planetary Sciences: Fluid Planets: Atmospheres (0343, 1060), Planetary Sciences: Fluid Planets: Meteorology (3346)

Scientific paper

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.

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