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Author

Julien Bonnel

2 papers indexed here

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Open access Oct 2026

Estimating deep sediment sound speed from head waves at the New England shelf break.

Head-wave arrivals generated by explosive sources and recorded on a vertical line array were analyzed to estimate deep sediment sound-speed structure at the New England shelf break. Arrival times associated with two subsurface interfaces were identified using beamformed elevation angles and fit with a linear travel-tim...

M. Ballard, Ying-Tsong Lin, Julien Bonnel et al. · 0 citations
Open access Sep 2026

Azipod-equipped vessels in the Antarctic Peninsula radiate underwater continuous mid-frequency narrowband and tonal sounds.

It is commonly accepted that ocean noise from marine traffic is mostly confined to low frequencies. This article empirically demonstrates that large (length >120 m) vessels equipped with electrically driven "Azipod" propulsion systems generate loud mid-frequency (3-15 kHz) tonal and mid-frequency narrowband and tonal s...

Julien Bonnel, Alex Mira, A. Bocconcelli et al. · 0 citations

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