An improved fast converted-wave imaging method
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DOI: 10.1007/s11770-019-0747-4
Abstract: The conventional fast converted-wave imaging method directly uses backward P-and converted S-wavefield to produce joint images. However, this image is accompanied by strong background noises, because the wavefields in all propagation directions contribute to it.… read more here.
Keywords: converted wave; fast converted; method; wavefield ... See more keywords
The P- and S-Wave Decomposition in a Multicomponent Elastic Wavefield Based on the Divergence and Curl Operators and Their Applications in Elastic Reverse Time Migration
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3224736
Abstract: The P- and S-wave separation is an important step in the elastic reverse-time migration (ERTM). It not only removes crosstalk artifacts in the image but also provides additional constrains to subsurface structures by providing images… read more here.
Keywords: reverse time; time; elastic reverse; based divergence ... See more keywords
Potential of deep predictive coding networks for spatiotemporal tsunami wavefield prediction
Sign Up to like & getrecommendations! Published in 2020 at "Geoscience Letters"
DOI: 10.1186/s40562-020-00169-1
Abstract: Data assimilation is a powerful tool for directly forecasting tsunami wavefields from the waveforms recorded at dense observational stations like S-Net without the need to know the earthquake source parameters. However, this method requires a… read more here.
Keywords: spatiotemporal tsunami; data assimilation; deep predictive; wavefield ... See more keywords
Reduced memory implementation of a local elastic finite-difference solver
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DOI: 10.1190/geo2020-0468.1
Abstract: The recovery of elastic properties from seismic data often requires the iterative use of seismic modeling. Finite-difference (FD) simulation is a common component in seismic modeling, and it is usually the most computationally expensive step… read more here.
Keywords: wavefield; local elastic; solver; local domain ... See more keywords