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Can oceanic flows be heard? Abyssal melodies

Author(s)
Wunsch, Carl
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Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/
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Abstract
<jats:p> Fluid flows generate an acoustic noise field. In principle, oceanic flows on varying time and length scales produce a sound field and its detectability is considered here. A fragile lower bound analysis is made of the acoustic signature, using the Lighthill theory, of a simple train of boundary vortices generated by baroclinic tidal flows. Subject to numerous assumptions, the accompanying sound should be detectable within the hum band of seismo-acoustic pressure fields, and more generally, across the entire oceanic spectrum—likely through wave number analyses of spatially coherent acoustic array data. </jats:p>
Date issued
2022-10
URI
https://hdl.handle.net/1721.1/146977
Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Publisher
Acoustical Society of America (ASA)
Citation
Wunsch, Carl. 2022. "Can oceanic flows be heard? Abyssal melodies." 152 (4).
Version: Final published version
ISSN
0001-4966
Keywords
Acoustics and Ultrasonics, Arts and Humanities (miscellaneous)

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