Ultrasonic seismic imaging of lava samples by viscoacoustic asymptotic waveform inversion: calibration and developments
Résumé
The object of this study is to estimate the viscoelastic parameters (compressionnal velocity and the intrinsic attenuation factor Q) of lava samples in acoustic tomography experiments by the use of an asymptotic viscoacoustic diffraction tomography method developped by Ribidetti et al 2000. 2.5 D common offset ultrasonic experiments are performed in a water tank laboratory.
Mots clés
compressional velocity
calibration
ultrasonic seismic imaging
viscoacoustic asymptotic waveform inversion
lava samples
intrinsic attenuation
diffraction tomography method
viscoacoustic medium
asymptotic and Born approximation
intrinsic attenuation factor
acoustic tomography
asymptotic viscoacoustic diffraction tomography
2.5-D common-offset ultrasonic experiments
water tank laboratory
Born approximation
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