Abstract
The fine‐scale structure of the directional ambient noise field is revealed using a large aperture (900 m) vertical array. Frequency and spatial spectral estimates are calculated during the passage of a local storm, providing a detailed study of ambient noise levels at low frequencies (15–130 Hz) as wind speed increases from 2 to 12 m/s over a 21‐h period. Spectral levels of beams directed horizontally show the time and spatial variability of distant sources. Spectral levels of beams directed toward the surface reflect local noise sources and display a threshold type behavior with level changes up to 5 dB, suggesting the abrupt onset of a source mechanism such as breaking waves. Subsequent thresholds may indicate a change in source mechanism such as the conversion from spilling breakers to plunging breakers. [Work supported by ONT.]
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
