Spatial- and temporal-interpolations for efficient hybrid wave numerical simulations
نویسندگان
چکیده
The hybrid simulation method is developed for simulating wave propagation only in a localized heterogeneous media with inputs obtained once all from known reference model. Despite the fact that has wide range of applications computational seismology, associated error control this received relatively little attention previous research works. We quantitatively discuss two-step acoustic cases and propose spatial refinement scheme to compute based on multi-elements spline interpolation, which preferable traditional Lagrange interpolation since it uses more polydirectional interpolated points. This can also be used local wavefield general applications, such as saving smooth full-waveform inversion framework. Furthermore, save memory requirements, are proposed sparsely stored high upsampling ratio during global simulation, Fourier introduced recover them their original time series. To demonstrate effect methods, we perform several 2D 3D numerical simulations using spectral element method. find when meshing differs, appreciably reduce waveforms caused by inaccurate inputs. point out efficiently waveform, allowing steps toward Nyquist limit. Our expected become standard requirements potential implications further improving accuracy so-called box tomography.
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2022
ISSN: ['2296-6463']
DOI: https://doi.org/10.3389/feart.2022.977063