Acoustic propagation measurements were conducted in a Thalassia testudinum meadow in the Lower Laguna Madre, a shallow bay on the Texas Gulf of Mexico coast. A piezoelectric source transmitted frequency-modulated chirps (0.1 to 100 kHz) over a 24-h period during which oceanographic probes measured environmental parameters including dissolved oxygen and solar irradiance. Compared to a nearby less vegetated area, the received level was lower by as much as 30 dB during the early morning hours. At the peak of photosynthesis-driven bubble production in the late afternoon, an additional decrease in level of 11 dB was observed.
Lee, Kevin M., Megan S. Ballard, Gabriel R. Venegas, Jason D. Sagers, Andrew R. McNeese, Jay R. Johnson, Preston S. Wilson, and Abdullah F. Rahman. 2019. “Broadband Sound Propagation in a Seagrass Meadow throughout a Diurnal Cycle.” The Journal of the Acoustical Society of America 146 (4): EL335–41. https://doi.org/10.1121/1.5127737.
The Journal of the Acoustical Society of America