The Influence of a Method of Bracing a Fiber-Optical Seismic Streamer during Towing on the Parameters of Its Output Signal

The dependence of the noise density in a signal of a fiber-optic towed streamer in a frequency band of 10 Hz–1 kHz on the towing speed in a range of 1 to 5 knots, on the coefficient of relative elongation of its elastic section, its type, and on the type of attachment of the elastic section to the t...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2020-10, Vol.63 (4), p.577-582
Main Authors: Vlasov, A. A., Plotnikov, M. Yu, Lavrov, V. S., Kiselev, S. S., Aleinik, A. S.
Format: Article
Language:English
Subjects:
Biology
Dependence
Electrical Engineering
Elongation
Fiber optics
Field tests
Frequencies
Frequency ranges
Measurement Science and Instrumentation
Medicine
Noise
Noise levels
Noise reduction
Optical fibers
Physical Chemistry
Physical Instruments for Ecology
Physics
Physics and Astronomy
Tensile stress
Towed bodies
Towing
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Summary:The dependence of the noise density in a signal of a fiber-optic towed streamer in a frequency band of 10 Hz–1 kHz on the towing speed in a range of 1 to 5 knots, on the coefficient of relative elongation of its elastic section, its type, and on the type of attachment of the elastic section to the towed body have been studied. In addition, the dependence of the tensile load on the studied streamer on the towing speed is obtained. The experimental data obtained during field tests on the streamer noise level and their analysis are presented. The reduction of the towing noise level when using an elastic section occurred by a factor of up to 3 in a frequency range of 180 to 600 Hz depending on the type of elastic section when attaching it to a strength member of the towed body, and up to 2 in the entire studied frequency range.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441220040363