Resolution of Low-Frequency Attenuation Anomalies in the Southern Hemisphere.
During Project Kiwi One, anomalously high values of low-frequency attenuation were observed in the central South Pacific Ocean. Similar results were obtained along the track from New Zealand into the Southern Ocean during Project Tasman Two. A recent analysis of oceanographic data by Mellen shows th...
Main Authors: | , , , , |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1987
|
Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA181754 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA181754 |
Summary: | During Project Kiwi One, anomalously high values of low-frequency attenuation were observed in the central South Pacific Ocean. Similar results were obtained along the track from New Zealand into the Southern Ocean during Project Tasman Two. A recent analysis of oceanographic data by Mellen shows that both regions are included in a relatively high pH contour at the sound channel axis. The corresponding predicted values of attenuation are in reasonable agreement with the measured data. Keywords: Underwater sound absorption; Acoustic attenuation; pH factor; Sea water. Presented at the Meeting of the Acoustical Society of America (113th) Indianapolis, IN, 11-15 May 87. |
---|