GRAIL, LLR, and LOLA constraints on the interior structure of the Moon
Keane, James T.
Chan, Ngai H.
Taylor, G. Jeffrey
Wieczorek, Mark A.
Kiefer, Walter S.
Williams, James G.
AffiliationUniv Arizona, Dept Planetary Sci, Lunar & Planetary Lab
MetadataShow full item record
PublisherGEOPHYSICAL RESEARCH LETTERS
CitationGRAIL, LLR, and LOLA constraints on the interior structure of the Moon 2016, 43 (16):8365 Geophysical Research Letters
JournalGeophysical Research Letters
Rights© 2016. American Geophysical Union. All Rights Reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractThe interior structure of the Moon is constrained by its mass, moment of inertia, and k(2) and h(2) tidal Love numbers. We infer the likely radius, density, and (elastic limit) rigidity of all interior layers by solving the inverse problem using these observational constraints assuming spherical symmetry. Our results do not favor the presence of a low rigidity transition layer between a liquid outer core and mantle. If a transition layer exists, its rigidity is constrained to 43-9+26GPa, with a preference for the high rigidity values. Therefore, if a transition layer exists, it is more likely to have a rigidity similar to that of the mantle (approximate to 70GPa). The total (solid and liquid) core mass fraction relative to the lunar mass is constrained to 0.0098-0.0094+0.0066 and 0.0198-0.0049+0.0026 for interior structures with and without a transition layer, respectively, narrowing the range of possible giant impact formation scenarios.
NotePublished: 19 August 2016; 6 Month Embargo.
VersionFinal published version
SponsorsNASA's Discovery Program