The Review of High Pressure Science and Technology
Online ISSN : 1348-1940
Print ISSN : 0917-639X
Reviews—Dynamic Properties and Material Transport in the Earth's Deep Interior—
Seismic Attenuation Measurement by Cyclic Loading under High Pressure and Temperature
Takashi YOSHINODaisuke YAMAZAKIYuji HIGOKen-ichi FUNAKOSHI
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2014 Volume 24 Issue 2 Pages 126-135

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Abstract

An experimental method to study the seismic attenuation factor (Q−1) and anelastic properties of materials at high pressure and high temperature has been established by using the multianvil high-pressure deformation device (D-DIA) and a synchrotron X-ray radiography at SPring8. Time resolved images of the sample and reference material provide their strain as a function of time during cyclic loading. Attenuation is determined as the tangent of the angle of phase lag between the sample and the reference material. A newly installed short period sinusoidal cyclic loading oil pressure system enable us to determine minimal strain of the sample in a wide frequency range from 2 to 0.01 hertz on olivine aggregates at 1 GPa and up to 1673 K. The detectable minimum strain is around 5×10−5. Several test experiments exhibited resolvable Q−1 (10−2) above 1273 K. The results are generally consistent with previously reported data.

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© 2014 The Japan Society of High Pressure Science and Technology
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