posted on 2023-05-18, 12:11authored byHermand, J-P, Randall, J
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.
History
Publication title
Journal of the Acoustical Society of America
Volume
137
Issue
4
Pagination
EL314-EL319
ISSN
0001-4966
Department/School
Institute for Marine and Antarctic Studies
Publisher
Acoustical Soc Amer Amer Inst Physics
Place of publication
Ste 1 No 1, 2 Huntington Quadrangle, Melville, USA, Ny, 11747-4502
Rights statement
Copyright 2015 Acoustical Society of America
Repository Status
Open
Socio-economic Objectives
Assessment and management of terrestrial ecosystems