Shelf Break Acoustics Contrasting Oceanographic Processes South of New England and the China Seas To Verify Patterns of Underwater Acoustic Sensitivity
Abstract
The shelfbreak oceanographic environment is complex, with multiple oceanographic processes operating on different space and time sc"ales. Because of the variability of the Sound Speed field on small space and time scales, understanding acoustic propagation and localization is difficult.In order to address fundamental questions on shelfbreak Sound Speed variability and associated impacts on acoustic propagation, we propose to contrast two regions, south of New England and the China Seas, using both historical data analysis and an integrated field experiment. In New England, we will participate in the New England Shelf Break Acoustic Experiment, and makephysical oceanographic measurements that span the Shelfbreak Front and the upper continental slope. This data will be analyzed and used in analysis and modeling with other Acoustic Experiment participants. The primary scientific goal will be to examine how Sound Speed variability affects acoustic sensitivity fields. Emphasis will be placed on Warm Core Rings and their interaction with the Shelfbreak Front as well as near bottom variability over the continental slope. We will also analyze previously collected field data in both the South and East China Seas to examine oceanographic processes contributing to Sound Speed variability. Analysis in the northern South China Sea will focus on impacts of the reversal of slope currents, while analysis in the East China Sea will involve flo"ws in the vicinity of submarine canyons
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2019
- Source ID
- N000141912646
Entities
People
- Glen G. Gawarkiewicz
Organizations
- Office of Naval Research
- United States Navy
- Woods Hole Oceanographic Institution