To understand mysticete acoustic-based detection of ships, radiated noise from high-speed craft, cruise ships, catamarans and fishing vessels was recorded June-September 2009. Calibrated acoustic data (2500 Hz) from a vertical hydrophone array was combined with ship passage information. A cruise ship had the highest broadband source level, while a fishing vessel had the lowest. Ship noise radiated asymmetrically and varied with depth. Bow null-effect acoustic shadow zones were observed for all ship classes and were correlated with ship-length-to-draft-ratios. These shadow zones may reduce ship detection by near-surface mysticetes.
|Journal||Journal of the Acoustical Society of America|
|State||Published - Sep 2012|
Bibliographical noteFunding Information:
This work was supported by the NSF IGERT Sensor Science, Engineering and Informatics. Additional support was provided by the Maine Space Grant Consortium, University of Maine, and the Bar Harbor Whale Watch.
ASJC Scopus subject areas
- Arts and Humanities (miscellaneous)
- Acoustics and Ultrasonics