Possibilities and Prospects for the Use of Distributed Fiber Sensors in Geophysics

A brief review of the applications of distributed acoustic sensors for solving geophysical and seismometric problems is given. Theoretical estimates and experimental measurements of the level of self-noise in distributed acoustic sensors, including those at subhertz frequencies, are obtained. Numeri...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2023-10, Vol.66 (5), p.854-859
Main Authors: Nikitin, S. P., Kislov, K. V., Starovoit, Yu. O., Bengalskii, D. M., Spiridonov, E. P., Kharasov, D. R., Fomiryakov, E. A., Nanii, O. E., Treshchikov, V. N.
Format: Article
Language:English
Subjects:
Acoustic noise
Biology
Electrical Engineering
Estimates
Geophysics
LF noise
Measurement Science and Instrumentation
Medicine
Numerical models
Physical Chemistry
Physical Instruments for Ecology
Physics
Physics and Astronomy
Seismic activity
Sensors
Temperature effects
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Summary:A brief review of the applications of distributed acoustic sensors for solving geophysical and seismometric problems is given. Theoretical estimates and experimental measurements of the level of self-noise in distributed acoustic sensors, including those at subhertz frequencies, are obtained. Numerical modeling has been carried out, which makes it possible to quantify the power of low-frequency noise (associated with a slow temperature change of the probed fiber) in the signal of distributed acoustic sensors. The obtained results are supplemented by theoretical estimates of the power spectrum of a signal from a distant earthquake; they demonstrate the importance of taking into account temperature effects in the fiber when planning experiments related to the registration of weak seismic events.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441223050196