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| | Abstract | | We used partially frozen brine as a solid-liquid coexistence system to investigate S-wave attenuation phenomena. Ultrasonic wave transmission measurements on ice-brine coexisting system were conducted in order to examine the influence of unfrozen brine in the pore microstructure on ultrasonic waves. We observed the variations of a transmitted S-wave through a liquid system to a solid-liquid coexistence system, changing its temperature from -3 C to -20 C. We quantitatively estimated attenuation in a frequency range of 150-450 kHz by considering the different distances between the source and receiver transducers. The waveform analyses for S-waves indicate that attenuation results obtained in the present study are not stable. The possible reason for this is the sensitivity of S-wave to the heterogeneities of a solid-liquid coexistence system. We should estimate S-wave scattering attenuation in such systems. |
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