Polygon patterns On Europa (reply)

Strike-slip fault patterns on Europa: Obliquity or polar wander?

Variations in diurnal tidal stress due to Europa’s eccentric orbit have been considered as the driver of strike-slip motion along pre-existing faults, but obliquity and physical libration have not been taken into account. The first objective of this work is to examine the effects of obliquity on the predicted global pattern of fault slip directions based on a tidal-tectonic formation model. Our...

Modeling Surface Stresses on Europa

Introduction: Modeling of the surface stresses on Europa has been performed to date, considering tidal, nonsynchronous, and polar wander sources of stress [3-6]. The results of such models can be used to match lineament orientation with the candidate stress patterns. Moreover, stratigraphic analysis can be used in combination with stress modeling to infer the evolution of Europa’s surface back ...

On Linear Polygon Transformations

Chemosynthetic Ecosystems on Mars , Europa and Titan

Introduction: Chemosynthetic (chemotrophic) communities, which live in environments barren of free oxygen and light, are good candidates to develop prominent living systems in the Solar System. These communities, based on organic carbon-fixing microorganisms, are widespread on the Earth nowadays as well as during its history. The capability of these biological communities to live in environment...

Condensed O2 on Europa and Callisto

High signal-to-noise ratio spectra of Europa and Callisto’s trailing side show a 0.3% deep 5771 Å absorption band due to condensed O2 at the same wavelength as a stronger band previously identified on Ganymede. Excellent longitudinal coverage for Europa shows that unlike Ganymede, where the band is much stronger on the trailing side, Europa shows no significant longitudinal variation in the O2 ...