Shear Instabilities as a Probe of Jupiter's Atmosphere

Details Shear Instabilities as a Probe of Jupiter's Atmosphere Shear Instabilities as a Probe of Jupiter's Atmosphere

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002icar..158..401b&link_type=abstract

Icarus, Volume 158, Issue 2, p. 401-409.

Astronomy and Astrophysics

Astronomy

9

Scientific paper

Linear wave patterns in Jupiter's clouds with wavelengths strongly clustered around 300 km are commonly observed in the planet's equatorial atmosphere (F. M. Flasar and P. J. Gierasch, 1986, J. Atmos. Sci.43, 2683-2707). We propose that the preferred wavelength is related to the thickness of an unstable shear layer within the clouds (A. P. Ingersoll and D. W. Koerner 1989, Bull. Am. Astron. Soc.21, 943). We numerically analyze the linear stability of wavelike disturbances that have nonzero horizontal phase speeds in Jupiter's atmosphere and find that, if the static stability in the shear layer is very low (but still nonnegative), a deep vertical shear layer like the one measured by the Galileo probe (D. H. Atkinson et al. 1998, J. Geophys. Res.103, 22911-22928) can generate the instabilities. The fastest growing waves grow exponentially within an hour, and their wavelengths match the observations. Close to zero values of static stability that permit the growth of instabilities are within the range of values measured by the Galileo probe in a hot spot (A. Seiff et al. 1998, J. Geophys. Res.103, 22857-22889). Our model probes Jupiter's equatorial atmosphere below the cloud deck and suggests that thick regions of wind shear and low static stability exist outside hot spots.

Affiliated with

Also associated with

No associations

Rating

Shear Instabilities as a Probe of Jupiter's Atmosphere 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 Shear Instabilities as a Probe of Jupiter's Atmosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear Instabilities as a Probe of Jupiter's Atmosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-926975