Other
Scientific paper
Jan 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979rock.rept.....t&link_type=abstract
Annual Report, 1 Jan. - 31 Dec. 1978 Rockwell International Science Center, Thousand Oaks, CA.
Other
Basalt, Internal Friction, Lunar Rocks, Q Factors, Absorption, Adsorption, Analogs, Damping, Measurement, Outgassing, Seismic Waves, Volatility, Water
Scientific paper
Laboratory measurements are summarized of the internal friction quality factor Q and velocity on lunar and analogs of lunar rock to aid in the interpretation of seismic Q versus depth profiles which seismologists are deriving for p and s waves. These profiles are having considerable impact on current models of the structure, evolution, and present thermal state of the moon. In order to obtain a more accurate and fuller interpretation of the lunar seismic data in particular and future planetary seismic data in general, laboratory measurements were extended to include rock under confining pressure and at high temperatures representing bed rock at some depth. The feasibility of obtaining Q in the 50 Hz range with the rock under hydrostatic confining pressure is discussed and measurements of Q while increasing hydrostatic pressure and temperature simultaneously are presented. Also, to better understand the dramatic effect of H2O on Q, measurements are carried out with other volatiles and the effect of one of these on the temperature dependence of Q is studied.
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