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Episodic outgassing as the origin of atmospheric methane on Titan
This work shows that episodic outgassing of methane stored as clathrate hydrates within an icy shell above an ammonia-enriched water ocean is the most likely explanation for Titan's atmospheric methane, and predicts that future fly-bys should reveal the existence of both a subsurface water ocean and a rocky core, and should detect more cryovolcanic edifices. Expand
Tidally heated convection: Constraints on Europa's ice shell thickness
[1] The thickness of Europa's ice shell is constrained with numerical experiments of thermal convection, including heterogeneous tidal heating. Thermal convection occurs in the stagnant lid regimeExpand
Tidal dissipation within large icy satellites: Applications to Europa and Titan
This paper describes a new approach based on variational principles to calculate the radial distribution of tidal energy dissipation in any satellite. The advantage of the model with respect toExpand
Tidal interactions between Saturn and its satellites play a crucial role in both the orbital migration of the satellites and the heating of their interiors. Therefore, constraining the tidalExpand
Europa: Tidal heating of upwelling thermal plumes and the origin of lenticulae and chaos melting
Europa. We show that tidal energy can be preferentially focused in rising plumes for viscosities in agreement with laboratory experiments. When the plume cores reach the base of the outer coldExpand
New constraints on Saturn’s interior from Cassini astrometric data
Using astrometric observations spanning more than a century and including a large set of Cassini data, we determine Saturn's tidal parameters through their current effects on the orbits of the eightExpand
Solid tidal friction above a liquid water reservoir as the origin of the south pole hotspot on Enceladus
Abstract Earth, Jupiter's moon Io and Saturn's tiny moon Enceladus are the only solid objects in the Solar System to be sufficiently geologically active for their internal heat to be detected byExpand
Titan's internal structure inferred from a coupled thermal-orbital model
Through coupled thermal and orbital calculations including a full description of tidal dissipation, heat transfer and the H 2O–NH3 phase diagram, we propose a model for the internal structure andExpand
Numerical simulation of the winter polar wave clouds observed by Mars Global Surveyor Mars Orbiter Laser Altimeter
Abstract In 1998, the Mars Orbiter Laser Altimeter revealed the presence of isolated or quasi-periodic thick clouds during the martian polar night. They are believed to be composed of CO 2 iceExpand
Powering prolonged hydrothermal activity inside Enceladus
Geophysical data from the Cassini spacecraft imply the presence of a global ocean underneath the ice shell of Enceladus1, only a few kilometres below the surface in the South Polar Terrain2–4.Expand