Spatial observations of low-frequency acoustic propagation near isolated seamounts using an autonomous surface vehicle
Seamount
Chirp
DOI:
10.1121/10.0036447
Publication Date:
2025-04-17T12:48:45Z
AUTHORS (6)
ABSTRACT
This work demonstrates the feasibility of using autonomous surface vehicles equipped with a shallow towed acoustic module (TAM) to survey spatial variability low-frequency propagation across complex bathymetry, such as Atlantis II seamounts in Northwest Atlantic. The abrupt seamount topography is found significantly influence TAM's recordings chirp transmissions (500–600 Hz band) from bottom-moored source ∼30 km by notably causing blockage in-plane paths and reverberation arrivals displaying three-dimensional effects, confirmed synthetic aperture beamforming. Ray tracing simulations are compared these observations based on data-assimilated ocean model.
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