Acoustic ducting by shelf water streamers at the New England shelfbreak
Acoustic ducting by shelf water streamers at the New England shelfbreak
Date
2023-08-01
Authors
Johnson, Jennifer J.
Lin, Ying-Tsong
Newhall, Arthur E.
Gawarkiewicz, Glen G.
Knobles, David P.
Chaytor, Jason D.
Hodgkiss, William S.
Lin, Ying-Tsong
Newhall, Arthur E.
Gawarkiewicz, Glen G.
Knobles, David P.
Chaytor, Jason D.
Hodgkiss, William S.
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DOI
10.1121/10.0020348
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Keywords
Acoustics
Hydrophone
Speed of sound
Geophysical techniques
Oceanography
Signal-to-noise ratio
Numerical methods
Optical instruments
Surface scattering
Internal waves
Hydrophone
Speed of sound
Geophysical techniques
Oceanography
Signal-to-noise ratio
Numerical methods
Optical instruments
Surface scattering
Internal waves
Abstract
Greater sound speed variability has been observed at the New England shelfbreak due to a greater influence from the Gulf Stream with increased meander amplitudes and frequency of Warm Core Ring (WCR) generation. Consequently, underwater sound propagation in the area also becomes more variable. This paper presents field observations of an acoustic near-surface ducting condition induced by shelf water streamers that are related to WCRs. The field observations also reveal the subsequent disappearance of the streamer duct due to the passage of a WCR filament. These two water column conditions are investigated with sound propagation measurements and numerical simulations.
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Author Posting. © Acoustical Society of America, 2023. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Johnson, J. J., Lin, Y.-T., Newhall, A. E., Gawarkiewicz, G. G., Knobles, D. P., Chaytor, J. D., & Hodgkiss, W. S. (2023). Acoustic ducting by shelf water streamers at the New England shelfbreak. JASA Express Letters, 3(8), 086001, https://doi.org/10.1121/10.0020348.
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Johnson, J. J., Lin, Y.-T., Newhall, A. E., Gawarkiewicz, G. G., Knobles, D. P., Chaytor, J. D., & Hodgkiss, W. S. (2023). Acoustic ducting by shelf water streamers at the New England shelfbreak. JASA Express Letters, 3(8), 086001.