PECOS Refurbishment and Array Fabrication in Support of the Dynamic Ocean-Acoustics Observations
Abstract
A primary goal for the Northern Ocean Rapid Surface Evolution (NORSE) experiment (estimated to occur in 2022) is to observe the pers istent and temporal variations in acoustic propagation in the Nordic Seas caused by highly variably oceanography. A secondary goal i s to quantify the ambient sound level and to identify the ambient sound generation mechanisms and propagation effects. To achieve th ese goals, we propose to deploy an ocean-acoustic recording system known as the PErsistent aCoustic Observation System (PECOS).This DURIP covers the cost to refurbish PECOS and to construct new analog acoustic arrays required to support the acoustic data collectio n. The system refurbishment includes materials to replace corroded frame structures from a previous yearlong deployment, replacemen t of lithium primary battery packs, and procurement of dedicated mooring and deployment equipment required for fielding the system. The array construction covers the cost of fabricating acoustic line arrays required for yearlong survivability in the Arctic and to meet scientific mission objectives.This proposal contains an option for providing an acoustic source located in the water column on a vertical mooring. In order to accurately assess the impact of ocean dynamics on acoustic propagation, it is desirable to deploy a n acoustic source at a fixed location relative to the acoustic receivers and to have the source repetitively broadcast the same wave form(s) throughout the course of the experiment.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 07, 2021
- Source ID
- N000142112865
Entities
People
- Jason D Sagers
Organizations
- Office of Naval Research
- United States Navy
- University of Texas at Austin