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Detailed Reference Information
Nakamura et al. 1982
Nakamura, Y., Latham, G.V. and Dorman, H.J. (1982). Apollo lunar seismic experiment—final summary. Journal of Geophysical Research 87: doi: 10.1029/JS087iS01p0A117. issn: 0148-0227.

Processing the initial analysis of the entire set of Apollo lunar seismic data collected continuously from 1969 through 1977 have now been completed. Recent results include: 1) better defined deep moonquake locations, which appear to be bounded rather sharply between about 800 km and 1000 km depths with concentrations near both boundaries; and 2) middle mantle (~500 to 1000 km depth) seismic velocities of Vp=8.3¿0.4 km/sec and Vs=4.6¿0.2 km/sec, which are significantly higher than previous estimates and represent an increase of velocities from the upper mantle as opposed to a decrease in previous estimates.

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Journal of Geophysical Research
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American Geophysical Union
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