Tidal modulation of very-low-frequency and ultra-low-frequency ambient noise levels

Several years of continuous low-frequency underwater ambient noise data from 0.1 to 125 Hz have been made available for examination by the United Nations Comprehensive Nuclear Test Ban Treaty Organization. Narrow-band noise time records between 0.5 and 10 Hz were selected for study, chosen deliberat...

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Bibliographic Details
Published in:JASA express letters 2023-11, Vol.3 (11)
Main Authors: Eller, Anthony I., Heaney, Kevin D., Bradley, David L.
Format: Article
Language:English
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Summary:Several years of continuous low-frequency underwater ambient noise data from 0.1 to 125 Hz have been made available for examination by the United Nations Comprehensive Nuclear Test Ban Treaty Organization. Narrow-band noise time records between 0.5 and 10 Hz were selected for study, chosen deliberately to address noise sources tied primarily to the environment. Power spectra of the variable narrow-band time records were found to display sharp spectral lines at fluctuation frequencies that match lunar and solar diurnal and semidiurnal ocean tides.
ISSN:2691-1191
2691-1191
DOI:10.1121/10.0022269