Analysis and Modeling for Task Force Ocean New England Seamounts Experiments, Postdoctoral Fellowship for John Ragland
Abstract
This research proposal aims to analyze data from the New England Seamounts Calibrated Acoustic Fluctuation Experiment (NESCAFE) to advance our understanding of oceanographic-driven fluctuations in acoustic propagation near seamounts. The project will support postdoctoral researcher Dr. John Ragland at Woods Hole Oceanographic Institution s Ocean Acoustics and Dynamics Laboratory. Using data from four 250 Hz acoustic tomography transceiver moorings and an oceanographic mooring, along with CPIES measurements, the research will investigate how ocean features such as eddies, internal waves, and spice affect acoustic propagation. Key objectives include examining non-linear relationships between sound-speed fluctuations and acoustic path availability, analyzing mode coupling between surface, subsurface, and deep sound channel modes, and exploring the feasibility of using acoustic fluctuation data to estimate internal wave spectra. This work combines ocean acoustics, oceanography, and signalprocessing to enhance our understanding of underwater acoustic propagation, with direct applications to undersea warfare and tactical oceanography. The research builds upon previous experimental work including SPICE, SW06, PhilSea, CANAPE, and CAATEX, leveraging established methodologies while advancing new approaches to acoustic propagation analysis in complex oceanic environments. Approved for public release.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 10, 2025
- Source ID
- N000142512253
Entities
People
- John A. Colosi
Organizations
- Office of Naval Research
- United States Navy
- Woods Hole Oceanographic Institution