Other
Scientific paper
Oct 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.5199t&link_type=abstract
(Stanford University, Conference on Seismic Wave Attenuation, Stanford University, Stanford, Calif., June 25-27, 1979.) Journal
Other
21
Acoustic Attenuation, Rocks, Seismology, Volatility, Basalt, Elastic Waves, Hydrocarbons, Lunar Rocks, Moisture Content
Scientific paper
Measurements were made of the specific dissipation factor of rocks with small contents of volatiles. The factor was measured for shear waves as a function of relative partial pressure for benzene, hexane, ethanol, methanol and water at 10 kHz with the vibrating bar method in a chamber with relative partial pressures between zero and 0.9. The one- or two-monolayer coverage of absorbed volatiles increased the shear wave dissipation factor with exposure to alcohols and water, but only slightly when exposed to hexane and benzene. Direct ellipsometry data and absorption isotherm results are given for thin films or adsorbed volatiles at low partial pressures; the measurements are analyzed in terms of a model relating the dissipation factor to the relative mass of the adsorbed volatiles, the surface area of the rock, and the rock temperature.
Clark V. A.
Richardson John M.
Spencer T. W.
Tittmann B. R.
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