Broadband sound propagation in a seagrass meadow throughout a diurnal cycle

Authors

Kevin M. Lee, University of Texas at Austin
Megan S. Ballard, University of Texas at Austin
Gabriel R. Venegas, University of Texas at Austin
Jason D. Sagers, University of Texas at Austin
Andrew R. McNeese, University of Texas at Austin
Jay R. Johnson, University of Texas at Austin
Preston S. Wilson, University of Texas at Austin
Abdullah Rahman, The University of Texas Rio Grande Valley

Document Type

Article

Publication Date

10-7-2019

Abstract

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.

Comments

© 2019, Acoustical Society of America. Original published version available at https://doi.org/10.1121/1.5127737

Recommended Citation

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.

Publication Title

The Journal of the Acoustical Society of America

DOI

10.1121/1.5127737