Measurement and Analysis of the Temporal Variations in Acoustic Propagations in the Northern Ocean Rapid Surface Evolution (NORSE) Experiment
Abstract
Approved for Public ReleaseThe primary goal for this proposal is to observe the persistent and temporal variations in acoustic propa gation in the Northern Ocean Rapid Surface Evolution (NORSE) experiment site in the Nordic Seas. For this purpose we seek to measure acoustic signals from moored sources and interpret the measured data through acoustic propagation modeling. A secondary goal is to quantify the ambient sound level and to identify the ambient sound generation mechanisms and propagation effects. To achieve these g oals, we propose to deploy the acoustic recording system known as the PErsistent aCoustic Observation System (PECOS) at the NORSE ex periment site for a duration one year. The PECOS array will include 52 channels and can be designed with horizontal and/or vertical apertures. The vertical aperture of the hydrophone array will be outfitted with environmental sensors to monitor the local temperatu re and salinity profiles at the array location. The array will be deployed on the continent shelf overlooking the basin sources to a coustically monitor topographically driven boundary currents and their associated eddies. The PECOS array will provide array gain ov er isotropic noise for the detection of the signals from the moored sources, as well as directional measurements of the ambient nois e. The addition of acoustic and oceanographic measurements on the shelf effectively extends the boundaries of the experiment through the dynamic topographically driven currents that surround the basin, and expands the study to also encompass the interaction betwee n the basin processes and the surrounding ocean waters. The effort proposed here is dependent upon the award of a Defense University Research Instrumentation Program (DURIP) grant to cover the cost of the PECOS system upgrade.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Oct 22, 2021
- Source ID
- N000142112919
Entities
People
- Megan S. Ballard
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin