Accession Number:

ADA114126

Title:

Ambient Noise in the Western Gulf of Mexico.

Descriptive Note:

Technical rept.,

Corporate Author:

TEXAS UNIV AT AUSTIN APPLIED RESEARCH LABS

Personal Author(s):

• Shooter,Jack A.
• DeMary,Thomas E.
• Koch,Robert A.

Report Date:

1982-03-11

Pagination or Media Count:

35.0

Abstract:

A brief 12 h segment of ambient noise from the Western Gulf of Mexico for a clear, calm period has been analyzed. The receiver depths were 170 m, 370 m, and 766 m the bottom was at 3280 m. It was found that the ambient noise was dominated most of the 12 h by seismic exploration. To avoid this noise, quiet periods between seismic domination were used the median noise levels at 50 Hz were found to be around 75-77 dB1 micro Pasq rootHz with the slightly higher levels at the SOFAR channel axis. Overall median levels were 77-80 dB1 micro Pasq rootHz. These levels are lower than the 85 dB levels for the Atlantic near Bermuda. Author

Descriptors:

• *Ambient noise
• Mexico Gulf
• West(Direction)
• Underwater sound
• Measurement
• Statistical analysis
• Frequency
• Dynamic pressure
• Level(Quantity)
• Spectra
• Ships
• Geophysical prospecting

Subject Categories:

• Physical and Dynamic Oceanography
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE