01322nas a2200181 4500008004100000022001400041245009100055210006900146260001600215300001800231490000800249520073700257100002100994700002501015700002401040700002501064856005101089 2017 eng d a0001-496600aMeasurement of low-frequency tissue response of the seagrass Posidonia oceanica0 aMeasurement of lowfrequency tissue response of the seagrass iPos cJan-05-2017 aEL433 - EL4380 v1413 a
A one-dimensional acoustic resonator technique was used to study leaves of the Mediterranean seagrass species Posidonia oceanica collected from Crete and Sicily. The leaf blades were finely divided, mixed with artificial seawater, and degassed to create a suspension of tissue independent of leaf structure and free bubbles or internal voids. The low-frequency (1 to 8 kHz) bulk modulus of the leaf tissue was inferred from the acoustic measurements and independent density measurements. The measured density of the seagrass tissue was 960 ± 20 kg/m3 which agrees with previously published values. The inferred bulk modulus was 2.1 GPa with 90% confidence limits 1.0–5.0 GPa.
1 aJohnson, Jay, R.1 aVenegas, Gabriel, R.1 aWilson, Preston, S.1 aHermand, Jean-Pierre uhttp://asa.scitation.org/doi/10.1121/1.4981925