Statistics – Computation
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...384..298s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 384, Jan. 1, 1992, p. 298-304.
Statistics
Computation
8
Astronomical Photometry, Equatorial Regions, Jupiter Atmosphere, Planetary Composition, Charge Coupled Devices, Limb Darkening, Methane
Scientific paper
Results are presented of a preliminary analysis of the limb-darkening curves along the unusually faint Jovian South Equatorial Belt (SEB), observed in early 1990. Three limb-darkening curves extracted from the CCD images obtained in two strong methane bands at 0.725 and 0.890 micron plus one nearby continuum region (0.750 micron) are compared with the theoretical computations, taking the effect of multiple light scattering into account. The single-scattering albedo for the particles comprising the visible cloud layer is found to be almost unity in contrast to its typical value of 0.991 deduced by Tomasko et al. (1978) for the typical dark state of the SEB. It is also suggested that a large-scale lifting of the entire lower cloud layer is likely to have taken place in this region. The cloud type is so close to the bottom of of the upper cloud that they are nearly in contact. It is concluded that cause of these changes in the SEB may be an unusual updraft motion from the deeper level of the atmosphere.
Kawabata Kiyoshi
Satoh Takehiko
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