Other
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..106k&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.106
Other
Scientific paper
Ubiquitous tectonic dichotomy characteristic of all celestial bodies (Theorem 1 [1-3 & others]) has a very original face in the Enceladus' case. This rich in ice body continues to outgas and in this sense could be compared with comets. Spectacular outgassing continues only from the southern strongly squeezed terrains and does not show itself at the north where only numerous craters (partially impacts) reveal rather intensive outgassing in the past. The double nature of celestial bodies (expansion and compression) is due to their movements in keplerian non - circular orbits with periodically changing accelerations causing inertia-gravity waves warping bodies. These warpings in rotating bodies (but all bodies rotate!) have interfering ortho- and diagonal directions, standing character and harmonic wavelengths. The fundamental wave 1 long 2π R and the most intensive inevitably bulges out (e xpands) one hemisphere-segment and presses in (compacts) the opposite one. In the larger bodies like Earth keeping their spherical shape due to an important gravity there are the uplifted hemisphere and th e subsided one. At Earth, for an example, the continental eastern hemisphere and the opposite Pacific western one. The smaller bodies like asteroids, comet cores and many satellites do not have sufficient gravity to withstand the warping wave force and th us acquire oblong convexo-concave shape of a bean or banana [4]. A transition between "smaller" and "larger" bodies lies often somewhere in between 400 to 500 km in diameter. Thus, Enceladus is at the limit of this interval. It is spherical but shows a clear difference between two hemispheres (North against South like at Mars). The outgassing scrambled south remind the recently acquired images of the Hartley 2 comet (EPOXI mission) where dust -gas jets "spit out" of intensively compact layered in a few directions areas [5]. Temperature dichotomous Mimas also resembles Enceladus in what concerns hemispheric distribution of heat.
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