Tethys: Lithospheric thickness and heat flux from flexurally supported topography at Ithaca Chasma
نویسندگان
چکیده
منابع مشابه
Topographic Features of Ithaca Chasma , Tethys
Helfenstein, and C. C. Porco. German Aerospace Center, Institute of Planetary Research, Rutherfordstr. 2, 12489 Berlin, Germany, [email protected]; Institut für Geologische Wissenschaften, Freie Universität, 12249 Berlin, Germany; Department of Astronomy, Cornell University, Space Sciences Building, Ithaca, NY 14853, USA, Cassini Imaging Central Laboratory for Operations, Space Science Institu...
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[1] Flexural modeling of Ithaca Chasma on Tethys suggests that the elastic thickness and the surface heat flux were 5–7 km and 18–30 mW/m respectively, when the feature formed ( 4 Gyr B.P.). Tidal heating is a plausible heat source, suggesting that Tethys’ eccentricity was higher in the past. Depending on Tethys’ internal structure, eccentricities in the range 0.001 to 0.02 are sufficient to ha...
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[1] We identify sites of apparent flexural uplift at rift zone boundaries on Ganymede using Galileo stereo-derived topography. The estimated effective elastic thickness te is 0.9–1.7 km for a nominal Young’s modulus of 1 GPa. Using a viscoelastic model of the ice crust we find that the temperature defining the base of the elastic layer is <185 K for likely strain rates. The inferred local heat ...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2007
ISSN: 0094-8276
DOI: 10.1029/2007gl031467