Radiated noise from commercial ships in the Gulf of Maine: Implications for whale/vessel collisions | Zendy

Joshua Allen | Zendy; Michael Peterson | Zendy; George V. Sharrard | Zendy; Dana Wright | Zendy; Sean Todd | Zendy

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Radiated noise from commercial ships in the Gulf of Maine: Implications for whale/vessel collisions

Author(s) -

Joshua Allen,

Michael Peterson,

George V. Sharrard,

Dana Wright,

Sean Todd

Publication year - 2012

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.4739251

Subject(s) - hydrophone , cruise , noise (video) , environmental science , acoustics , marine engineering , oceanography , shadow (psychology) , whale , fishing , geology , hull , fishery , computer science , physics , engineering , psychology , artificial intelligence , image (mathematics) , psychotherapist , biology

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.

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