High‐frequency acoustic backscattering from a coarse shell ocean bottom

Content Provider	Semantic Scholar
Author	Stanić, Steve Briggs, Kevin Bradford Fleischer, Peter Sawyer, William B. Ray, Richard I.
Copyright Year	1989
Abstract	Acoustic bottom backscattering measurements were taken in a coarse shelly area 27 miles east of Jacksonville, Florida Data from sidescan sonar, underwater television, stereo photography, high‐resolution bathymetry, and sediment core analysis were used to locate and classify the experimental area. Bottom backscattering measurements were made as a function of frequency (20–180 kHz), grazing angle (5°–30°), and azimuthal angle. Backscattering strengths were found to follow Lambert’s law, had a slight negative frequency dependence, and were consistent with measurements taken in other shelly areas. There was no azimuthal dependence of the scattered signals over the range of grazing angles and frequencies used. Bottom roughness had a Gaussian distribution and the ping‐to‐ping scattered signal envelope distributions were non‐Rayleigh. Comparison of scattering strengths from several shelly areas showed little correlation with measured rms roughness. Scattering strength predictions made using a composite roughness...
Starting Page	125
Ending Page	136
Page Count	12
File Format	PDF HTM / HTML
DOI	10.1121/1.397720
Alternate Webpage(s)	http://www.dtic.mil/dtic/tr/fulltext/u2/a210846.pdf
Alternate Webpage(s)	https://doi.org/10.1121/1.397720
Volume Number	85
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article