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A lunar density model consistent with topographic, gravitational, librational, and seismic data

Bills, Bruce G. and Ferrari, Alfred J. (1977) A lunar density model consistent with topographic, gravitational, librational, and seismic data. Journal of Geophysical Research, 82 (8). pp. 1306-1314. ISSN 0148-0227. http://resolver.caltech.edu/CaltechAUTHORS:20160520-154932140

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Abstract

A series of models of the lunar interior are derived from topographic, gravitational, librational, and seismic data. The librational parameters and low-degree gravity harmonics result primarily from surface height variations and only secondarily from lateral density variations. The moon departs from isostasy, even for the low-degree harmonics, with a maximum superisostatic stress of 200 bars under the major mascon basins. The mean crustal thicknesses under different physiographic regions are: mascons, 30–35 km; irregular maria, 50–60 km; and highlands, 90–110 km. A possible composition consistent with our model is an anorthositic crust, underlain by a predominantly forsterite upper mantle which grades into a refractory rich lower mantle surrounding a pyrrhotite core.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1029/JB082i008p01306DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/JB082i008p01306/abstractPublisherArticle
Additional Information:© 1977 American Geophysical Union. Received May 5, 1976; revised October 1, 1976; accepted October 18, 1976. We would like to express appreciation to R. J. Phillips for support and valuable discussions during this investigation. This report represents one phase of research performed at both the Jet Propulsion Laboratory and the California Institute of Technology under NASA contract NAS 7-100. Division of Geological and Planetary Sciences, California Institute of Technology, contribution 2751.
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NASANAS 7-100
NASA/JPL/CaltechUNSPECIFIED
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Caltech Division of Geological and Planetary Sciences2751
Record Number:CaltechAUTHORS:20160520-154932140
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160520-154932140
Official Citation:Bills, B. G., and A. J. Ferrari (1977), A lunar density model consistent with topographic, gravitational, librational, and seismic data, J. Geophys. Res., 82(8), 1306–1314, doi:10.1029/JB082i008p01306
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67231
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 May 2016 23:00
Last Modified:20 May 2016 23:00

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