The Iapetus’s ridge: Possible explanations of its origin

Details The Iapetus’s ridge: Possible explanations of its origin The Iapetus’s ridge: Possible explanations of its origin

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008adspr..42...61c&link_type=abstract

Advances in Space Research, Volume 42, Issue 1, p. 61-69.

Physics

9

Scientific paper

Images from the Cassini mission show the existence of a long ridge on Iapetus. It extends at least 1400 km along the great circle defined by the equator. We discuss the possibility that the ridge is a result of extensional forces acting above an ascending current of solid-state convection. A two-cell pattern of convection is a reasonable explanation of the observed feature. Three scenarios of the ridge formation are proposed: spin orbit resonance scenario, convection in low viscosity-interior scenario, and impact generating flow scenario.

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