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Interiors of Earth-Like Planets and Satellites of the Solar System

Breuer, Doris and Spohn, T. and Van Holst, T. and Van Westrenen, W. and Stanley, S. and Rambaux, N. (2021) Interiors of Earth-Like Planets and Satellites of the Solar System. Surveys in Geophysics, 42. Springer. doi: 10.1007/s10712-021-09677-x. ISSN 0169-3298.

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Official URL: https://link.springer.com/article/10.1007/s10712-021-09677-x


The Earth-like planets and moons in our solar system have iron-rich cores, silicate mantles, and a basaltic crust. Differentiated icy moons can have a core and a mantle and an outer water–ice layer. Indirect evidence for several icy moons suggests that this ice is underlain by or includes a water-rich ocean. Similar processes are at work in the interiors of these planets and moons, including heat transport by conduction and convection, melting and volcanism, and magnetic field generation. There are significant differences in detail, though, in both bulk chemical compositions and relative volume of metal, rock and ice reservoirs. For example, the Moon has a small core [~ 0.2 planetary radii (RP)], whereas Mercury’s is large (~ 0.8 RP). Planetary heat engines can operate in somewhat different ways affecting the evolution of the planetary bodies. Mercury and Ganymede have a present-day magnetic field while the core dynamo ceased to operate billions of years ago in the Moon and Mars. Planets and moons differ in tectonic style, from plate-tectonics on Earth to bodies having a stagnant outer lid and possibly solid-state convection underneath, with implications for their magmatic and atmosphere evolution. Knowledge about their deep interiors has improved considerably thanks to a multitude of planetary space missions but, in comparison with Earth, the data base is still limited. We describe methods (including experimental approaches and numerical modeling) and data (e.g., gravity field, rotational state, seismic signals, magnetic field, heat flux, and chemical compositions) used from missions and ground-based observations to explore the deep interiors, their dynamics and evolution and describe as examples Mercury, Venus, Moon, Mars, Ganymede and Enceladus.

Item URL in elib:https://elib.dlr.de/147624/
Document Type:Article
Title:Interiors of Earth-Like Planets and Satellites of the Solar System
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Breuer, DorisUNSPECIFIEDhttps://orcid.org/0000-0001-9019-5304UNSPECIFIED
Spohn, T.UNSPECIFIEDhttps://orcid.org/0000-0002-9322-6660UNSPECIFIED
Van Holst, T.Royal Observatory of Belgium, Brussels, Belgium; Institute of Astronomy, KU Leuven, BelgiumUNSPECIFIEDUNSPECIFIED
Van Westrenen, W.Vrije Universiteit AmsterdamUNSPECIFIEDUNSPECIFIED
Stanley, S.Johns Hopkins University, Earth & Planetary SciencesUNSPECIFIEDUNSPECIFIED
Rambaux, N.IMCCE, Observatoire de Paris, FranceUNSPECIFIEDUNSPECIFIED
Date:14 December 2021
Journal or Publication Title:Surveys in Geophysics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:interior structure, earth-like planets, moons, thermal evolution, space mission data
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Robotics
DLR - Research area:Raumfahrt
DLR - Program:R RO - Robotics
DLR - Research theme (Project):R - Planetary Exploration, R - Planetary Evolution and Life
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Institute of Planetary Research > Planetary Physics
Deposited By: Breuer, Dr. Doris
Deposited On:16 Dec 2021 07:22
Last Modified:16 Dec 2021 07:22

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