Wideband seabed acoustics on New England Shelf and Slope
Abstract
Proposed are analyses of acoustic propagation data taken in May-June 2021 in SBCEXP 2021 and proposed measurements for May-June SBC,EXP 2022 Statistics of VGS parameters can be used to generate frequency dependent transmission loss and bottom loss. Acoustic data,taken on the slope in 2021 were generated with SUS. The plan is to use both PE and couple normal mode algorithms to analyze broadba,nd propagation on the slope. The 2021 measurements were made on the New England continental slope, south of the Mudpatch, and were,focused in an area between the 200 and 400 m bathymetry contours. Acoustic propagation was along both adiabatic and non-adiabatic p,aths. Scientific issues to be addressed are spatial and temporal coherence and sound speed and attenuation (and depth gradients) d,ispersion of the surface layer which affect bottom loss in the mid-frequencies and the characteristics of the deep structure of the,seabed which affect low-frequency propagation. Of further interest is the waveguide invariant as a means by which the modal/multipa,th structure of a geographical area can be characterized.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 05, 2022
- Source ID
- N000142212172
Entities
People
- David P. Knobles
Organizations
- Office of Naval Research
- United States Navy