Rock Deformation Monitoring Using Monte Carlo Waveform Inversion
Rock Deformation Monitoring Using Monte Carlo Waveform Inversion
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DOI：
10.1029/2021jb021873
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发表时间：
2021-02
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影响因子：
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通讯作者：
S. Lai;N. Fuji;I. Katayama;L. Bonilla;Y. Capdeville
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作者：
S. Lai;N. Fuji;I. Katayama;L. Bonilla;Y. Capdeville
我们在实验室岩石变形实验中估计弹性和滞弹性参数及其演化，同时开发蒙特卡罗波形反演。干燥和水饱和样品的换能器到换能器单源单站主动地震数据来自 Zaima 和 Katayama (2018)，https://doi.org/10.1029/2018JB016377。我们首先对边界条件进行了试错估计，以抑制其对波形的影响。合成地震数据是借助谱元法使用具有不同弹性和非弹性参数组合的等效均质模型生成的。我们将它们与实验室的实验数据进行了比较。基于比较，我们获得了变形实验过程中岩石样本地震速度和衰减的随时间变化，我们将其解释为裂纹的发展。我们对弹性和非弹性参数的同时估计使我们能够详细了解岩石破坏之前的动力学。
We estimate elastic and anelastic parameters and their evolution during laboratory rock deformation experiments, while developing a Monte Carlo waveform inversion. The transducer‐to‐transducer one‐source one‐station active seismic data of dry and water‐saturated samples are obtained from Zaima and Katayama (2018), https://doi.org/10.1029/2018JB016377. We first performed a trial‐and‐error estimate of the boundary conditions in order to suppress its influence on waveforms. The synthetic seismic data were generated using equivalent homogeneous models with different combinations of elastic and anelastic parameters with the aid of spectral element method. We compared them with the laboratory experimental data. Based on the comparisons, we obtained the time‐lapse variations of seismic velocities and attenuation of rock samples during deformation experiments, which we interpreted as crack developments. Our simultaneous estimation of elastic and anelastic parameters allowed us to detail the dynamics prior to the rock failure.