Other
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008epsc.conf..747k&link_type=abstract
European Planetary Science Congress 2008, Proceedings of the conference held 21-25 September, 2008 in Münster, Germany. Online a
Other
Scientific paper
The third theorem of the wave planetary tectonics [1-3 & others] states: "Celestial bodies are granular". It means that inertia-gravity waves appearing in bodies due to their movements in non-circular keplerian orbits and propagating in them in four interfering orthogonal and diagonal directions produce tectonic granules. They are of three kinds: uprising (+), subsiding (-) and neutral (0). Their sizes are inversely proportional to bodies orbital frequencies. Higher frequency - smaller granule, lower frequency - larger granule. The inertia-gravity waves warp all spheres of celestial bodies: solid, liquid, gaseous, and act in stars, planets, asteroids, comets and satellites. The Cassini data provide numerous excellent images of saturnian rings and show that wave processes are ordinary also in them - in disperse solid environment. To illustrate dependence between orbital frequencies and granule sizes we provide the following geometrical representation of the planetary row starting from the solar photosphere also having a certain orbital frequency about the center of the Solar system (Fig. 1). This row can be extended in domain of the outer planets by the same algorithm: Jupiter 3πR, Saturn 7.5πR, Uranus 21πR, Neptune 41πR, Pluto 62πR. One cannot directly observe these huge waves in the planets but they are needed for wave modulation procedures very important for satellites and rings having two orbital frequencies: around the star and planets. A recent support for the wave structurization in the Solar system came from Saturn where 22 year long ground-based temperature observations discovered a wave-like oscillation: hotcold pattern switches every Saturn half-year = 15 Earth's years [4]. Like in the radio-wave physics the lower orbiting frequency of the Saturn's system around Sun modulates the higher orbiting frequencies of the system satellites, rings and the planet's upper atmosphere about the Saturn `s system center. . The higher frequency is multiplied and divided by the lower one with production of two additional to main two frequencies two side frequencies. All four have corresponding to them wave granules (the largest 7.5πR is not visible). Earlier they were discussed for the saturnian satellites and the upper planet's atmosphere [5, 6]. Now there are images for B- and A-Rings revealing unexplained tiny granulations in some dusty layers (Fig. 4, 5, 6). Sometimes obscure, sometimes rather clear these granules are kilometric (a few tens of km) dimensions predicted by the wave modulation calculations. For the calculations we use a scale of the frequency - size relation: Earth 1/365 days. - πR/4 or Sun 1/1month - πR/48-60. In the Saturn's upper atmosphere for two possible frequencies 1/0.45 d. and 1/0.425 d. (10.8 and 10.2 hours rotation period) and R=60000 km there are main granule sizes 58 and 55 km (πR/3244 and πR/3435). To them correspond tiny grains (50-100 km across) of PIA08934 image with sandstone texture (Fig.2). To modulated side frequencies correspond smaller granules (1/3244 : 7.5) 3.14 x 60000=7.74 km or (1/3435 : 7.5)3.14 x 60000=7.31 km and larger granules (1/3244 x 7.5)3.14 x 60000=435.6 or (1/3435 x 7.5)3.14 x 60000=411.4 km. The smaller granules are not yet observed (maybe they show themselves in kilometric radio emissions), but the larger granules are ubiquitous on the Saturn's surface as the "leopard skin" spots [6] (Fig. 3). In the outer B-Ring with R=117580 km and orb. frequency 1/0.471 d. a smaller main granule is πR/3100 or 119 km. The smaller modulated side granule is (1/3100 : 7.5)3.14 x 117580=15.9 km. At PIA08836 tiny granules have about 15 km across (Fig. 4). At PIA09855 tiny granules have 10 to20 km across (Fig.5) In some layers there is a wider rippling - maybe corresponding to the smaller main granule. In the outer A-Ring with R=136775 km an orb. frequency 1/0.595 d. a smaller main granule is πR/2454 or 175 km. The smaller modulated side granule is (1/2454 : 7.5)3.14 x 136775=23.3 km. At PIA09892 boundaries of tiny granules are mainly washed off and their size could be 10 to 20 km (Fig. 6).
No associations
LandOfFree
Granulation in saturnian rings and 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 Granulation in saturnian rings and atmosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Granulation in saturnian rings and atmosphere will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1794304