Data-Domain Traveltime Inversion of Reflected Waves Using Segment Dynamic Image Warping
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3111688
Abstract: Reflection traveltime information is generally used for producing a kinematically accurate velocity model for seismic imaging. Accurately estimating the traveltime difference between the demigrated and observed data is crucial for data-domain reflection traveltime tomography. To… read more here.
Keywords: traveltime; velocity; model; segment ... See more keywords
Wave-equation traveltime inversion with multifrequency bands: Synthetic and land data examples
Sign Up to like & getrecommendations! Published in 2018 at "GEOPHYSICS"
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
Frequency-dependent reflection wave-equation traveltime inversion from walkaway vertical seismic profile data
Sign Up to like & getrecommendations! Published in 2019 at "GEOPHYSICS"
DOI: 10.1190/geo2018-0567.1
Abstract: To accurately image the geologic structures from walkaway vertical seismic profile (VSP) data, it is necessary to estimate the subsurface velocity field with high resolution and enhanced illumination of deep reservoirs. Because full-waveform inversion (FWI)… read more here.
Keywords: inversion; frequency; velocity; traveltime ... See more keywords
Large-offset P-wave traveltime in layered transversely isotropic media
Sign Up to like & getrecommendations! Published in 2021 at "Geophysics"
DOI: 10.1190/geo2020-0415.1
Abstract: Large-offset seismic data processing, imaging, and velocity estimation require an accurate traveltime approximation over a wide range of offsets. In layered transversely isotropic media with a vertical symmetry axis, the accuracy of traditional traveltime approximations… read more here.
Keywords: velocity; isotropic media; transversely isotropic; layered transversely ... See more keywords
Ray-tracing traveltime tomography versus wave-equation traveltime inversion for near-surface seismic land data
Sign Up to like & getrecommendations! Published in 2017 at "Interpretation"
DOI: 10.1190/int-2016-0210.1
Abstract: AbstractFull-waveform inversion of land seismic data tends to get stuck in a local minimum associated with the waveform misfit function. This problem can be partly mitigated by using an initial velocity model that is close… read more here.
Keywords: traveltime tomography; inversion; ray tracing; traveltime ... See more keywords