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A Monte Carlo experiment for measuring acoustic properties of macroalgae living tissue
Hermand, J.-P.; Randall, J. (2015). A Monte Carlo experiment for measuring acoustic properties of macroalgae living tissue. J. Acoust. Soc. Am. 137(4): EL314-EL319. dx.doi.org/10.1121/1.4916794
In: The Journal of the Acoustical Society of America. American Institute of Physics: New York. ISSN 0001-4966; e-ISSN 1520-8524, more
Peer reviewed article  
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Keyword
    Marine/Coastal
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Abstract
    A methodology is developed to measure ex situ ultrasonic velocity of submerged aquatic vegetation tissue, in particular, macroalgae, in a nondestructive and efficient manner. An entire thallus is submerged in artificial seawater-filled tank through which many ultrasonic pulse-echo measurements are recorded while thallus parts are randomly displaced. Average sound speed of tissue is estimated from normal fit to extracted travel times given measured total volume fraction of tissue and travel time in water alone. For species Ecklonia radiata the resulting values for sound speed 1573.4?±?4.8 m s-1 and adiabatic compressibility 3.134?×10-10?±?1.34?×10-11 Pa-1 at 18?°C agree with more laborious and destructive methods.
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