Model regularization for seismic traveltime tomography with an edge-preserving smoothing operator
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2017.01.021
Abstract: Abstract The solutions of the seismic first-arrival traveltime tomography are generally non-unique, and the Tikhonov model regularization for the inversion is commonly used to stabilize the inversion. However, the Tikhonov regularization for traveltime tomography often… read more here.
Keywords: edge preserving; traveltime tomography; model; preserving smoothing ... See more keywords
Binary recovery via phase field regularization for first-arrival traveltime tomography
Sign Up to like & getrecommendations! Published in 2019 at "Inverse Problems"
DOI: 10.1088/1361-6420/ab1c6c
Abstract: We propose a double obstacle phase field methodology for binary recovery of the slowness function of an Eikonal equation found in first traveltime tomography. We treat the inverse problem as an optimization problem with quadratic… read more here.
Keywords: traveltime tomography; phase; binary recovery; phase field ... See more keywords
Distributed Traveltime Tomography Using Kernel-Based Regression in Seismic Networks
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2022.3211538
Abstract: Distributed subsurface imaging is of high relevance for autonomous seismic surveys by multiagent networks as envisioned for future planetary missions. The goal is to achieve a cooperative reconstruction of a subsurface image at each agent… read more here.
Keywords: subsurface; kernel based; distributed traveltime; traveltime tomography ... See more keywords
Alternating first-arrival traveltime tomography and waveform inversion for near-surface imaging
Sign Up to like & getrecommendations! Published in 2017 at "Geophysics"
DOI: 10.1190/geo2016-0576.1
Abstract: ABSTRACTNear-surface seismic imaging often plays a significant role in producing quality data processing results for the deep subsurface in land and shallow marine environments. First-arrival traveltime tomography is a common approach for near-surface imaging due… read more here.
Keywords: waveform inversion; traveltime tomography; inversion;
An efficient tomographic inversion method based on the Stochastic Approximation
Sign Up to like & getrecommendations! Published in 2018 at "Geophysics"
DOI: 10.1190/geo2017-0275.1
Abstract: Near-surface solutions often play a significant role in imaging the subsurface structures for land or shallow marine environments. Unfortunately, the standard approach to first-arrival traveltime tomography may involve the inversion of a large number of… read more here.
Keywords: traveltime tomography; inversion; approximation; stochastic approximation ... 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