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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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Abstract

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
Authors:
AuthorsInstitution or Email of Authors
Moore, W.B.bmoore@avalon.ess.ucla.edu
Hussmann, H.hauke.hussmann@dlr.de
Date:2009
Journal or Publication Title:Europa
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 369-380
Editors:
EditorsEmail
Pappalardo, Robert T.robert.pappalardo@jpl.nasa.gov
McKinnon, William B.mckinnon@wustl.edu
Khurana, Krishankkhurana@igpp.ucla.edu
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
Status:Published
Keywords:Interior, evolution, satellites, Europa
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
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)
Location: Berlin-Adlershof
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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