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- W2753219738 abstract "Staggered-grid finite-difference forward modeling in the time domain has been widely used in reverse time migration and full waveform inversion because of its low memory cost and ease to implementation on GPU, however, high dominant frequency of wavelet and big grid interval could result in significant numerical dispersion. To suppress numerical dispersion, in this paper, we first derive a new weighted binomial window function (WBWF) for staggered-grid finite-difference, and two new parameters are included in this new window function. Then we analyze different characteristics of the main and side lobes of the amplitude response under different parameters and accuracy of the numerical solution between the WBWF method and some other optimum methods which denotes our new method can drive a better finite difference operator. Finally, we perform elastic wave numerical forward modeling which denotes that our method is more efficient than other optimum methods without extra computing costs." @default.
- W2753219738 created "2017-09-15" @default.
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- W2753219738 date "2017-09-04" @default.
- W2753219738 modified "2023-09-30" @default.
- W2753219738 title "GPU Elastic Modeling Using an Optimal Staggered-Grid Finite-Difference Operator" @default.
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- W2753219738 doi "https://doi.org/10.1142/s0218396x18500054" @default.
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