Low Frequency Ambient Noise Near Bermuda: Filling in the Notch.

Ambient noise models which assume no significant wind-generated noise mechanism in the 5- to 100-Hz frequency range predict a notch in noise levels, between shipping and microseismic noise, at approximately 10 Hz. Data are presented for the frequency range 3-200 Hz that show that this notch fills in...

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Bibliographic Details
Main Authors: Von Winkle,William A, Browning,David G, Christian,Raymond J, Cobb,A D
Other Authors: NAVAL UNDERWATER SYSTEMS CENTER NEW LONDON CT NEW LONDON LAB
Format: Text
Language:English
Published: 1987
Subjects:
Acoustics
*AMBIENT NOISE
*UNDERWATER SOUND
MODELS
MICROSEISMS
NOISE
WIND
LOW FREQUENCY
LEVEL(QUANTITY)
WIND VELOCITY
SHIP NOISE
ANOMALIES
LPN-NUSC-710811
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA181062
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA181062
Description
Summary:Ambient noise models which assume no significant wind-generated noise mechanism in the 5- to 100-Hz frequency range predict a notch in noise levels, between shipping and microseismic noise, at approximately 10 Hz. Data are presented for the frequency range 3-200 Hz that show that this notch fills in at increasing wind speeds and is entirely eliminated above 35 knots for a North Atlantic Ocean location near Bermuda. These results are consistent with the low-frequency wind-generated noise mechanism. Presented at the Meeting of Acoustical Society of America (113th), Indianapolis, IN, 11-15 May 87.

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