Shelf Basin Arctic Acoustics
Abstract
Proposed is a 3-year plan from May 2015 to April 2018 for acoustic measurements and analyses motivated by the desire to observe the soundscape of the modern Arctic Ocean and measure the effects of a highly dynamic waveguide on sound propagation. To provide a shelf-slope research thrust that also complements deep-basin tomography measurements in the Beaufort Sea, it is proposed that Applied Research Laboratories, The University of Texas at Austin (ARL:UT) deploy for a period of one year an L-array on the continental shelf with the horizontal aperture broadside to the deep basin, and provide focused pre-experiment modeling and post-experiment model-data analyses. Of particular interest is the year-round measurement and modeling of (1) the horizontal directionality and depth dependence of the ambient noise and (2) the vertical and horizontal coherence of the acoustic field after it has propagated through the basin-slope-shelf water column and interacted with waveguide boundaries. It is hypothesized that such long-term acoustic observations will allow useful inferences to be made on ambient noise, the dynamics of ocean layer mixing and evolution, and ice properties and attrition.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2016
- Source ID
- N000141512144
Entities
People
- David P. Knobles
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin