Seismic instruments: article

Distributed acoustic sensing: a new tool or a new paradigm
K.V. Kislov1
V.V. Gravirov2
1 Institute of Earthquake Prediction Theory and Mathematical Geophysics, Russian Academy of Sciences, Moscow, Russia 2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, Russia
Journal: Seismic instruments
Tome: 58
Number: 2
Year: 2022
Pages: 5-38
UDK: 550.34.038.4+550.34.044.54
DOI: 10.21455/si2022.2-1
Full text
Keywords: Distributed Acoustic Sensing (DAS), Distributed Vibration Sensors (DVS), Distributed Strain Sensing (DSS), Optical Fiber, Rayleigh Scattering, Brillouin Scattering, Stimulated Brillouin Scattering, Optical Time Domain Reflectometry, Optical Frequency Domain Reflectometry, Brillouin Optical Analysis Systems
Аnnotation: Abstract. Distributed Acoustic Sensing (DAS) is a technology which uses a fiber-optic cable as a linear array of virtual seismic sensors. The article allows you to learn a little more about DAS data, mainly from a theoretical point of view and correct some existing misconceptions; it gives an overview of the development of the DAS and its modifications. The purpose of this work is to discuss the advantages and prospects of distributed fiber optic sensors, the possibilities to expand the boundaries of their practical applications and to clarify the problems and limitations faced by seismologists who use the DAS. The ways of overcoming the existing limitations are also described. The article identifies areas which need to be developed for wider dissemination of distributed measurements, lists some commercialized applications and applications in which experiments will soon turn into routine geophysical measurements.