Laser interferometer antenna array records seismo-acoustic earth strains

Dubrov, M. N.; Aleksandrov, D. V.

doi:10.1109/icatt.2007.4425194

Cited by 3 publications

(3 citation statements)

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“…Measurements of various deformations of solid earth, for example, such as volumetric expansion and contraction, tilt and shear deformations of the Earth's crust, carried out with their help, are fundamental research methods in geophysics, since they provide primary information for scientific analysis about the nature of the movement of the geological environment [13,14]. Studies of the nature and spatio-temporal dynamics of seismicdeformation geophysical wave fields become especially fruitful when using spatially distributed systems of synchronously operating instruments [15][16][17].…”

Section: Description Of Strain and Tilt Measuring Instruments And Methodsmentioning

confidence: 99%

Application of spaced system of laser interferometers and tiltmeters for sharing the earthquakes precursory events

et al. 2021

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Our previous investigations evidently show that synchronous observation of global atmosphere and lithosphere disturbances by means of 130-1,600 km spatially distributed precise instruments is the effective method of detecting precursors of large seismic events and other dangerous natural phenomena. This study expands the spatial range of our search up to 7,000-8,000 km and allows regional and global disturbances to be shared.

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Section: Description Of Strain and Tilt Measuring Instruments And Methodsmentioning

confidence: 99%

Application of spaced system of laser interferometers and tiltmeters for sharing the earthquakes precursory events

et al. 2021

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“…The antenna array containing the number of precise laser interferometers with the spatially distanced measuring arms has been recently introduced for the solid Earth exploration [1,2]. Some new examples of the developed technique application for seismic and acoustic monitoring are presented in this paper.…”

Section: Prefacementioning

confidence: 98%

Detection of solid Earth excitations by laser seismo-acoustic antenna array

Kravtsov

Dubrov

Remontov

2011

2011 VIII International Conference on Antenna Theory and Techniques

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The spatial and temporal distributions of seismo-acoustic wave fields are investigated. Non-stationary parameters (direction to the sources of oscillations, their intensities and localization) have been studied and estimated. The wave field distribution in elastic solid medium is recorded by the array of strain sensitive units. Every strain detector represents the laser interferometer with base-length 1-400 m, which measures the distant difference between two points of the solid medium. In this way spatial and temporal distribution of a strains field is being evaluated. The output signals of every laser sensors supplies the consequent inputs of multi-channel analog-to-digital converter and the obtained data are stored and subjected to the processing in the PC. The procedure of numerical treatment is based on the Fourier spectral analysis, which results to the tracks of non-stationary source motions to be displayed. The examples of described procedure for laser interferometers being apart up to 140 km and obtained data are presented.

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“…These methods along with the classical seismic monitoring techniques provide the new possibilities of combined data processing of the Earth's surface motions in the field of seismic waves [2][3][4]. The research of nature and spatiotemporal dynamics of the seismic-strain geophysical wave fields becomes fruitful considerably when the spatially distanced and array instruments are used [5,6].…”

Section: Introductionmentioning

confidence: 99%

Experience in synchronous observation of seismic-strain oscillations of the Earth by the spaced laser interferometers

et al. 2020

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The first results of unique experiments on the synchronous registration of seismic-strain oscillations of the Earth’s surface by three laser interferometers-deformographs (strainmeters) spaced 6740 km apart are presented. Two 100-meter laser interferometers at the Fryazino site (Moscow Region) and the 18-meter laser strainmeter at the observation point of Karymshina (Kamchatka Peninsula) were applied. The frequency-stabilized and thermally controlled lasers and the interferogram registration systems of compensation and modulation types providing an absolute instrumental resolution of 0.1-0.01 nm were used. The results of data analysis in sessions of synchronous operation of these instruments during 2016-2020 were obtained and discussed.

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Laser interferometer antenna array records seismo-acoustic earth strains

Cited by 3 publications

References 1 publication

Application of spaced system of laser interferometers and tiltmeters for sharing the earthquakes precursory events

Application of spaced system of laser interferometers and tiltmeters for sharing the earthquakes precursory events

Detection of solid Earth excitations by laser seismo-acoustic antenna array

Experience in synchronous observation of seismic-strain oscillations of the Earth by the spaced laser interferometers

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