Sound Propagation South of Martha's Vineyard.

An experiment was performed south of Martha's Vineyard, Massachusetts, on the Long Island platform using an embedded triaxial geophone and a colocated hydrophone as a receiver. The data shows low propagation loss even with a strong negative sound velocity gradient in the water. The signals from...

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Bibliographic Details
Main Author: Hecht,Richard J
Other Authors: UNDERWATER SYSTEMS INC ROCKVILLE MD
Format: Text
Language:English
Published: 1980
Subjects:
Acoustics
*SOUND TRANSMISSION
*UNDERWATER ACOUSTICS
EXPERIMENTAL DATA
EXPERIMENTAL DESIGN
GRAPHS
SIGNAL TO NOISE RATIO
SHALLOW WATER
CONTINENTAL SHELVES
SEISMIC WAVES
TABLES(DATA)
ACOUSTIC ATTENUATION
HYDROPHONES
NORTH ATLANTIC OCEAN
LOW FREQUENCY
TRANSMISSION LOSS
UNDERWATER SOUND SIGNALS
GEOPHONES
Long Island
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA091024
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA091024
Description
Summary:An experiment was performed south of Martha's Vineyard, Massachusetts, on the Long Island platform using an embedded triaxial geophone and a colocated hydrophone as a receiver. The data shows low propagation loss even with a strong negative sound velocity gradient in the water. The signals from the embedded vertical geophone show 10 to 12 dB less apparent propagation loss than the signals from the hydrophone in the 30 to 200 Hz frequency band. At lower frequencies, signals from all four sensors were similar. (Author)

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