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| | Abstract | | We used partially frozen brine as a solid-liquid coexistence system to investigate attenuation phenomena. Ultrasonic wave-transmission measurements on an ice-brine coexisting system were conducted to examine the influence of unfrozen brine in the pore microstructure on ultrasonic waves. We observed the variations of a 100-1000 kHz sweep signal transmitted through a liquid system to a solid-liquid coexistence system, changing its temperature from 20C to -15C. We quantitatively estimated attenuation in a frequency range of 350-600 kHz by considering different distances between the source and receiver transducers. Finally we demonstrated the applicability of sweep signal to estimate attenuation. |
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