An improved fast converted-wave imaging method
Sign Up to like & getrecommendations! Published in 2019 at "Applied Geophysics"
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
Model-order reduced full-wavefield migration using proper orthogonal decomposition
Sign Up to like & getrecommendations! Published in 2025 at "Geophysical Journal International"
DOI: 10.1093/gji/ggaf356
Abstract: As seismic migration is increasingly applied to more and more complex media, more sophisticated imaging techniques are required to generate accurate images of the subsurface. Currently, the best results for imaging are achieved by least-squares… read more here.
Keywords: migration; proper orthogonal; full wavefield; model ... 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
Viscoacoustic Full-Wavefield Migration and Its Application
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2025.3574991
Abstract: Conventional acoustic full-wavefield migration (AFWM) based on one-way wave propagators is typically derived under the assumption of an acoustic medium. However, real subsurface media exhibit viscoacoustic properties, where seismic wave propagation is accompanied by amplitude… read more here.
Keywords: method; viscoacoustic full; full wavefield; wavefield migration ... 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
Sign Up to like & getrecommendations! Published in 2021 at "Geophysics"
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
Examining 22 Years of Ambient Seismic Wavefield at Mount St. Helens
Sign Up to like & getrecommendations! Published in 2024 at "Seismological Research Letters"
DOI: 10.1785/0220240079
Abstract: An increase in seismic activity precedes most volcanic eruptions. Whereas event-based forecasting approaches have been successful, some eruptions remain unanticipated, resulting in casualties and damage. Our study leverages the recent advancements in ambient field seismology.… read more here.
Keywords: ambient seismic; mount helens; seismic wavefield; structural changes ... See more keywords