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- W2891718712 abstract "For shot-encoded seismic waveform tomography, the restarted limited-memory BFGS (L-BFGS) algorithm is an effective technique to suppress the crosstalk effect among encoded seismic shots. It restarts the L-BFGS calculation at each iteration segment, consisted of a group of iterations, and recodes the individual shots randomly not only at the beginning but also at the inside of the iteration segment. Here, we simplified this scheme using an invariant shot-encoding within each iteration segment and recoding individual shots only at the beginning of the segment. This simplification did compromise the image quality at the early stage of inversion, as the crosstalk effect appeared on the inversion result of the low-frequency data. However, it eventually achieved both the computation efficiency and the good quality for a multiscale inversion procedure, which inverts the seismic data from low-frequency components to high-frequency components in sequence." @default.
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- W2891718712 date "2019-01-01" @default.
- W2891718712 modified "2023-10-16" @default.
- W2891718712 title "Seismic Waveform Tomography With Simplified Restarting Scheme" @default.
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- W2891718712 doi "https://doi.org/10.1109/lgrs.2018.2867684" @default.
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