Deployment of Autonomous Hydrophone Array in the Scotia Sea
Abstract
The remote area of the Atlantic Ocean near the Antarctic Peninsula and the South Scotia Sea is a region where acoustic surveillance by International Monitoring System (IMS) hydrophones is at best limited. Sound originating in this area is either blocked or hindered by the South Georgia Islands (SGI) and the associated seafloor ridge system, making the region a potential hydroacoustic blind spot for IMS stations. In the spring of 2008, we successfully completed the deployment of a hydrophone array consisting of six autonomous underwater hydrophones (AUHs) in the Scotia Sea area. The array configuration is optimum to study sound propagation through the Antarctic Convergence Zone (ACZ), as well as acoustic blockage and reflection caused by islands and associated seafloor topography. Regional seismo-acoustic signals and episodic harmonic tremor from large icebergs will be utilized as natural sound sources.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2008
- Accession Number
- ADA516428
Entities
People
- Del R. Bohnenstiehl
- Haru Mastsumoto
- Minkyu Park
- Robert P. Dziak
- Robert W. Embley
Organizations
- Oregon State University