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Updated: Feb 26, 2026

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
Published on: April 18, 2025
Evidence for spatial variability in the geoacoustic parameters of the Atlantis II seamount flanks
Brendan J DeCourcy1, Julien Bonnel2
1Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02540, USA.
Abstract:
During a May 2023 cruise of the New England Seamount Acoustics Experiment, a near-surface airgun was fired at 1-min intervals along a nominally semi-circular track centered on the Atlantis II seamount. Airgun shots were recorded by four hydrophones on a short vertical line array moored on the seamount plateau, providing up-slope acoustic propagation coverage for the eastern half of the Atlantis II flank. Focusing on hydrophone recordings of the first flank bounce return, comparison with numerical acoustics simulations reveals evidence of spatial (latitude/longitude) variation in geoacoustic properties of the seamount flank.
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