Thermal Evolution of Europa's Silicate Interior
Moore, W.B. and Hussmann, H. (2009) Thermal Evolution of Europa's Silicate Interior. In: Europa The University of Arizona Space Science Series. The University of Arizona Press in collaboration with the Lunar Planetary Institute. pp. 369-380. ISBN 978 0 8165 2844 8.
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The thermal evolution of Europa's silicate mantle directly influences the chemistry and dynamics of its ocean and icy shell, and has significant implications for habitability. The current state of understanding of Europa's silicate mantle is reviewed and discussed. Models of the equilibrium thermal structure of the silicate mantle subject to tidal and radiogenic heating are presented. Europa's silicate mantle, like Io's, has two possible equilibrium states, one cold and Moon-like, and one hot (super-solidus) and Io-like. The heat flux out of the mantle in the hot state is ~10^13 W, less than one-tenth of Io, but an order of magnitude larger than the heat produced in the icy shell. The thermal evolution of Europa's mantle is coupled to its orbital evolution, and models of the coupled system are presented. The dynamics of this system is rich, and includes oscillatory states in which the heat flow varies by orders of magnitude. This behavior would clearly have significant implications for the chemistry of the ocean and the thickness of the overlying ice shell.
|Document Type:||Contribution to a Collection|
|Title:||Thermal Evolution of Europa's Silicate Interior|
|Journal or Publication Title:||Europa|
|In ISI Web of Science:||No|
|Page Range:||pp. 369-380|
|Publisher:||The University of Arizona Press in collaboration with the Lunar Planetary Institute|
|Series Name:||The University of Arizona Space Science Series|
|ISBN:||978 0 8165 2844 8|
|Keywords:||Interior, evolution, satellites, Europa|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EW - Erforschung des Weltraums|
|DLR - Research area:||Space|
|DLR - Program:||W EW - Erforschung des Weltraums|
|DLR - Research theme (Project):||W - Vorhaben Vergleichende Planetologie (old)|
|Institutes and Institutions:||Institute of Planetary Research > Planetary Geodesy|
|Deposited By:||Frank Sohl|
|Deposited On:||01 Feb 2010 11:56|
|Last Modified:||01 Feb 2010 11:56|
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