Low frequency acoustic properties of Posidonia oceanica seagrass leaf blades
Johnson, J.R.; Venegas, G.R.; Wilson, P.S.; Hermand, J.-P. (2017). Low frequency acoustic properties of Posidonia oceanica seagrass leaf blades. J. Acoust. Soc. Am. 141(6): EL555-EL560. https://dx.doi.org/10.1121/1.4984045
In: The Journal of the Acoustical Society of America. American Institute of Physics: New York. ISSN 0001-4966; e-ISSN 1520-8524, more
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| Authors | | Top |
- Johnson, J.R.
- Venegas, G.R.
- Wilson, P.S.
- Hermand, J.-P., more
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| Abstract |
The acoustics of seagrass meadows impacts naval and oceanographic sonar applications. To study this environment, a one-dimensional resonator was used to assess the low-frequency (1-5 kHz) acoustic response of the leaf blades of the Mediterranean seagrass Posidonia oceanica in water. Three separate collections of plants from Crete, Greece, and Sicily, Italy were investigated. A high consistency in effective sound speed was observed within each collection while a strong variability was observed between different collections. Average size, mass, and epiphytic coverage within each collection were quantified, and discoloration and stiffness are discussed qualitatively with respect to the observed acoustic variability. |
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