Computer Science – Sound
Scientific paper
Nov 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998e%26psl.163..123w&link_type=abstract
Earth and Planetary Science Letters, Volume 163, Issue 1-4, p. 123-130.
Computer Science
Sound
10
Scientific paper
The velocity of sound in liquid water has been measured as a function of temperature and pressure in the heated diamond-anvil high-pressure cell. The equation of state is determined at temperatures up to 200°C and pressures as high as 3.5 GPa. Above 500 MPa, the results of molecular-dynamics simulations based on the TIP4P potential agree with the experimental density within 1%. Such simulations, however, do not achieve the accuracy required to usefully predict the thermodynamics of hydration reactions in the upper mantle. At pressures below 1 GPa a comparison is possible up to 150°C between velocities measured using the ruby fluorescence pressure scale and velocities based on an absolute pressure determination. Under the assumption that velocities deviations are a result of pressure uncertainty, the mean error of the ruby scale is 4 MPa (40 bars) with a standard deviation of 8 MPa (80 bars).
Brown Jonathan M.
Slutsky Leon J.
Wiryana S.
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