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Global Geology 2015, 18(4) 258- DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Dual- parameter shaping regularized full waveform inversion in frequency domain |
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SUN Ruixue , HAN Liguo and SUN Eryan |
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1． College of Geo- Exploration Science and Technology，Jilin University，Changchun 130026，China; 2． China Institute of Atomic Energy，Beijing 102413，China |
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Abstract：
The regularization contributes to the resolution and stability in geophysical inversion． The authors ap- ply dual- parameter shaping regularization to full waveform inversion，aiming at two points: (1) improving the boundary resolution，and (2) increasing convergence． Firstly，the forward modeling is done，and the inversion is processed with the optimal solution． Compared with classical Tikhonov regularization scheme，the method re- flects better resolution and stronger convergence． Then， Marmousi model is experimented and inversed， and the deep structure has a sharper outline． The phase residual comparison illustrates weaker cycle- slipping． And a choice scheme of parameter is applied in FWI． |
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Keywords：
dual- parameter
regularization
FWI
frequency- domain
phase- error
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Received Revised Online: |
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