Joint inversion of P-, and S-wave travel times for characterisation of anisotropic materials using laser Doppler interferometry measurements

Andrej Bóna; Boris Gurevich; Roman Pevzner; Maxim Lebedev; Mahyar Madadi

doi:10.1071/ASEG2015ab006

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa Joint inversion of P-, and S-wave travel times for characterisation of anisotropic materials using laser Doppler interferometry measurements
Authors Andrej Bóna^a, Boris Gurevich^b, Roman Pevzner^c, Maxim Lebedev^d and Mahyar Madadi^e
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^a Curtin University, Perth, , WA, [email protected] ^b Curtin University & CSIRO Energy, Perth, , WA, [email protected] ^c Curtin University, Perth, , WA, [email protected] ^d Curtin University, Perth, , WA, [email protected] ^e Curtin University, Perth, , WA, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2015ab006
- Published online: 01 Dec 2015

Abstract

We used laser Doppler interferometer for measuring the displacement on the sample surface. These measurements allow us to clearly separate different wave types, whose picked travel times are used for estimation of VTI anisotropy parameters. One of the observations in this study is the very strong amplitude of critically refracted SP wave at the measurement surface. We confirmed the characteristics of this wave by numerical modelling. We used this wave to improve the estimates of the anisotropy. The observed strong amplitude of this wave can have strong implications for the interpretation of ultrasonic measurements.

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References

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Article Type: Research Article

Keyword(s): anisotropy; converted waves; inversion; laboratory experiments; rock characterisation

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oa Joint inversion of P-, and S-wave travel times for characterisation of anisotropic materials using laser Doppler interferometry measurements

Abstract

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