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Magnetism and thermal evolution of the terrestrial planets
Of the terrestrial planets, Earth and probably Mercury possess substantial intrinsic magnetic fields generated by core dynamos, while Venus and Mars apparently lack such fields. Thermal histories areExpand
Thermal state of an ice shell on Europa
We consider a model of Europa consisting of an ice shell that is decoupled from a silicate core by a layer of liquid water. The thickness of the shell is calculated as a function of colatitude andExpand
Impact frustration of the origin of life
TLDR
Using a range of plausible values for the timescale for abiogenesis, the interval in time when life might first have bootstrapped itself into existence can be found for each environment. Expand
Planetary magnetic fields
The past several years have seen dramatic developments in the study of planetary magnetic fields, including a wealth of new data, mainly from the Galilean satellites and Mars, together with majorExpand
Physical model of source region of subduction zone volcanics
The thermal structure of a generic subduction zone is investigated to elucidate the source region of subduction zone volcanics. The steady state thermal field is evaluated for a model subduction zoneExpand
Thermal evolution of a differentiated Ganymede and implications for surface features
Thermal evolution models are presented for Ganymede, assuming a mostly differentiated initial state of a water ocean overlying a rock layer. The only heat sources are assumed to be primordial heatExpand
Fluid Dynamics of Core Formation
Past discussions of core formation are incorrect or incomplete because they assume that metallic iron-rich liquid is able to migrate through a mostly solid silicate matrix by percolation, prior to Expand
INFLATING HOT JUPITERS WITH OHMIC DISSIPATION
We present a new, magnetohydrodynamic mechanism for inflation of close-in giant extrasolar planets. The idea behind the mechanism is that current, which is induced through interaction of atmosphericExpand
Constraints on Deep-seated Zonal Winds Inside Jupiter and Saturn
The atmospheres of Jupiter and Saturn exhibit strong and stable zonal winds. How deep the winds penetrate unabated into each planet is unknown. Our investigation favors shallow winds. It consists ofExpand
SPONTANEOUS SMALL-SCALE MELT SEGREGATION IN PARTIAL MELTS UNDERGOING DEFORMATION
A partial melt undergoing large scale deformation is shown to be unstable with respect to small scale redistribution of melt, provided the shear viscosity of the matrix depends on melt fraction. InExpand
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