Physics
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3503202h&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 3, CiteID L03202
Physics
5
Planetary Sciences: Solar System Objects: Jovian Satellites, Planetary Sciences: Solid Surface Planets: Ices, Planetary Sciences: Solid Surface Planets: Tectonics (8149)
Scientific paper
We present 2D and 3D numerical simulations of convection to test the role of shear heating and fracture zones on Europan ridge formation. Our simulations show that a pre-existing fracture zone promotes upwelling and lithospheric thinning, leading to topographic uplift of 50 m. Shear heating also promotes lithospheric thinning and buoyant ascent, producing a ridge-like feature with topography up to 120 m. Topography remains linear along strike even under the influence of heterogeneous 3D convection within the ice shell. Although the central trough is not reproduced in the simulations, our results support the idea that shear heating can produce ridge-like structures on Europa.
Han Lijie
Showman Adam P.
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