Vertical Noise Directionality in the Deep Ocean: A Review
Abstract
Analysis of data over a wide frequency range (0 Hz to 100 kHz) indicates that three factors play significant roles in determining the vertical directionality of ambient noise in the deep ocean. First is the preponderance of noise sources at or near the ocean surface rather than distributed throughout the water column. Second is the typical deep ocean sound speed profile, which allows high angle arrivals at a receiver only at relatively short ranges. Third is attenuation, which abruptly limits the range that noise is received at a given frequency. These factors result in a transition of higher noise at high angles (short ranges) for high frequencies to higher noise at low angles (long ranges) for low frequencies. A review is made of present results and possible deficiencies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 1985
- Accession Number
- ADA163386
Entities
People
- David G. Browning
- William A. Von Winkle
Organizations
- Naval Underwater Systems Center