Acoustic backscattering at low grazing angles from the ocean bottom

1988 ◽  
Vol 84 (3) ◽  
pp. 1018-1029 ◽  
Author(s):  
H. Boehme ◽  
N. P. Chotiros
Keyword(s):  
Ocean Bottom ◽  
Acoustic Backscattering ◽  
Grazing Angles

scholarly journals Acoustic backscattering at low grazing angles from the ocean bottom. I. Bottom backscattering strength

1984 ◽  
Vol 75 (S1) ◽  
pp. S30-S30 ◽  
Author(s):  
H. Boehme ◽  
N. P. Chotiros ◽  
L. D. Rolleigh ◽  
S. P. Pitt ◽  
A. L. Garcia ◽  
...  
Keyword(s):  
Ocean Bottom ◽  
Acoustic Backscattering ◽  
Backscattering Strength ◽  
Grazing Angles

Acoustic backscattering at low grazing angles from the ocean bottom. Part I. Bottom backscattering strength

1985 ◽  
Vol 77 (3) ◽  
pp. 962-974 ◽  
Author(s):  
H. Boehme ◽  
N. P. Chotiros ◽  
L. D. Rolleigh ◽  
S. P. Pitt ◽  
A. L. Garcia ◽  
...  
Keyword(s):  
Ocean Bottom ◽  
Bottom Part ◽  
Acoustic Backscattering ◽  
Backscattering Strength ◽  
Grazing Angles

RECONSTRUCTION OF LAYERED ELASTIC BOTTOM CHARACTERISTICS BY THE FREQUENCY DEPENDENCE OF SOUND REFLECTIVITY

2001 ◽  
Vol 09 (04) ◽  
pp. 1475-1484 ◽  
Author(s):  
VLADIMIR N. FOKIN ◽  
MARGARETE S. FOKINA
Keyword(s):  
Frequency Dependence ◽  
Half Space ◽  
Simulated Data ◽  
Elastic Half Space ◽  
Ocean Bottom ◽  
Sediment Layer ◽  
Elastic Bottom ◽  
Sea Bottom ◽  
Sound Reflection ◽  
Grazing Angles

The relation between the sound reflection losses measured at fixed grazing angles and the characteristics of the sediment layer and underlying half-space is considered. Based on this relation, a method of the reconstruction of the sea bottom characteristics is developed for a ocean bottom consisting of a single sediment layer overlaying a semi-infinite elastic half-space. Using this bottom model, the reconstruction of the characteristics of a layered elastic bottom is performed from the numerically simulated data with induced synthetic error.

Acoustic Detection of Demersal Fish Closer than 15 Centimetres to the Bottom in 80 Metres of Water

1978 ◽  
Vol 35 (8) ◽  
pp. 1155-1156 ◽  
Author(s):  
M. H. Orr ◽  
E. E. Hays ◽  
F. R. Hess
Keyword(s):  
Key Words ◽  
Demersal Fish ◽  
Ocean Bottom ◽  
Acoustic Detection ◽  
Acoustic Backscattering ◽  
System Operating

Records from an acoustic backscattering system operating at 200 kHz are presented which show that demersal fish can be individually detected closer than 15 cm to the ocean bottom in 88 m of water. Key words: acoustic, demersal fish

High‐frequency acoustic backscattering from a coarse shell ocean bottom

1989 ◽  
Vol 85 (1) ◽  
pp. 125-136 ◽  
Author(s):  
S. Stanic ◽  
K. B. Briggs ◽  
P. Fleischer ◽  
W. B. Sawyer ◽  
R. I. Ray
Keyword(s):  
High Frequency ◽  
Ocean Bottom ◽  
Acoustic Backscattering
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