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| | Abstract | | We use a poroelastic model to describe the propagation of ultrasonic waves through a solid-liquid coexistence system. 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 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 the theoretical model shows a qualitative agreement with the experimental velocity and attenuation results. |
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