Autoencoded Elastic Wave-Equation Traveltime Inversion: Toward Reliable Near-Surface Tomogram
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2023.3243140
Abstract: Due to unexpected environmental variations and poor consistencies in land data acquisition, complex near-surface seismograms are usually polluted unreasonably with a low signal-to-noise ratio (SNR). These complicated circumstances bring more challenges in identifying accurate first… read more here.
Keywords: inversion; equation traveltime; near surface; wave equation ... See more keywords
Wave-equation traveltime inversion with multifrequency bands: Synthetic and land data examples
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DOI: 10.1190/geo2018-0070.1
Abstract: We have developed a wave-equation traveltime inversion method with multifrequency bands to invert for the shallow or intermediate subsurface velocity distribution. Similar to the classical wave-equation traveltime inversion, this method searches for the velocity model… read more here.
Keywords: traveltime inversion; equation traveltime; traveltime; wave equation ... See more keywords
Three-dimensional data-domain full traveltime inversion using a practical workflow of early arrival selection
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DOI: 10.1190/geo2019-0476.1
Abstract: A new method of data-domain full traveltime inversion (FTI) is proposed to estimate the near-surface velocity model using early arrivals in seismic shot gathers. Data-domain FTI is capable of generating a background velocity model from… read more here.
Keywords: traveltime inversion; full traveltime; domain full; data domain ... See more keywords
Computational aspects of finite-frequency traveltime inversion kernels
Sign Up to like & getrecommendations! Published in 2020 at "Geophysics"
DOI: 10.1190/geo2020-0063.1
Abstract: Finite-frequency traveltime inversion offers higher accuracy for velocity model building than ray-based traveltime inversion. The adjoint force is the key for the computation of inversion kernels. Starting at the definition of inversion kernels for the… read more here.
Keywords: traveltime inversion; inversion; inversion kernels; frequency ... See more keywords