Top PDF Time domain viscoelastic full waveform inversion.
Time domain viscoelastic full waveform inversion.
... in full waveform inversion ...in time domain FWI, the displacement formulation of the wave equation is usually used instead of the popular velocity–stress ...However, inversion ...
17
Two-dimensional elastic full waveform inversion using Born and Rytov formulations in the frequency domain
... the full elastic waveform inversion in the frequency domain in a 2-D ...the full elastic wavefield ...frequency domain, a fast approach for multisource and multireceiver ...
30
The potential of time-lapse GPR full-waveform inversion as high resolution imaging technique for salt and ethanol transport
... Synthetic time-lapse GPR full-waveform inversion for monitoring ethanol tracer test: Synthetic 3D flow and transport simulations (PARTRACE code, [8]) were used to generate a plume fate for ...
3
Efficient 3D frequency-domain full-waveform inversion of ocean-bottom cable data with sparse block low-rank direct solver: a real data case study from the North Sea
... frequency-domain full wave- form inversion (FWI) on ocean-bottom cable data from the North ...by time-domain modeling and source wavelet estima- ...
6
Two-dimensional elastic full waveform inversion using Born and Rytov formulations in the frequency domain
... the full elastic waveform inversion in the frequency domain in a 2-D ...the full elastic wavefield ...frequency domain, a fast approach for multisource and multireceiver ...
30
Efficient 3-D frequency-domain mono-parameter full-waveform inversion of ocean-bottom cable data: application to Valhall in the visco-acoustic vertical transverse isotropic approximation
... frequency domain approach is also suitable for second-order optimization methods such as the truncated Newton methods due to the efficiency of the modelling steps and our ability to keep in core memory several ...
31
Time-domain seismic modeling in viscoelastic media for full waveform inversion on heterogeneous computing platforms with OpenCL.
... savings could be achieved if it was computed near the Nyquist frequency. Nevertheless, this test shows that the cost of computing 546 the discrete Fourier transform during time stepping is not trivial but remains ...
34
Crustal seismic imaging from multifold ocean bottom seismometer data by frequency domain full waveform tomography: Application to the eastern Nankai trough
... to full waveform processing, which should lead to a significant improvement in the resolution of ...zone. Full waveform inversion is entirely implemented in the frequency domain, ...
34
Validation of ground penetrating radar full-waveform inversion for field scale soil moisture mapping
... as time domain reflectometry (TDR) and capacitance probes are re- vealing their best potentialities in recently deployed wireless sensors networks (Bogena et ...
18
Waveform inversion based on wavefield decomposition
... Resolution analysis and source bandwidth We perform conventional FWI in the time domain for the 1D layer model. The initial model is homogeneous at 2 km/s. We analyze four FWI tests with diferent source ...
173
Increasing the robustness and applicability of full-waveform inversion: An optimal transport distance strategy
... The main reason for the limitation in the applicability of FWI is related to what is usually referred to as cycle skipping, or phase ambiguity. In standard FWI, the oscillatory seismic data is matched in the ...
13
Combined traveltime and frequency-domain seismic waveform inversion: : a case study on multi-offset ultrasonic data
... During waveform inversion, it is possible to remove the effect of the direct wavefield and re- produce this by simply subtracting the corresponding data, com- puted as a first step in the homogeneous ...
18
Two-dimensional near-surface seismic imaging with surface waves : alternative methodology for waveform inversion
... frequency domain ( Brossier et al. , 2009 ), or in the time domain, by means of finite-element methods ( Marfurt , 1984 ) or finite-difference methods ( Virieux , 1986 ...multi-parameter ...
226
Computation of 3D Frequency-Domain Waveform Kernals for c(x,y,z) Media
... performance, full waveform inversion is finally becoming feasible on select problems with promising results emerging from frequency-domain ...frequency domain Green’s functions for the ...
20
2D full-waveform modeling of seismic waves in layered karstic media
... seismic inversion because if we update (insert, delete, or modify) the elastic properties or boundary geometries for one particular layer, we only need to update the propagator matrix in this layer and the ...
11
Soil surface water content estimation by full-waveform GPR signal inversion in the presence of thin layers
... 1 Introduction At the eld scale, evaluating the soil water content spatial variability is an important issue for many research and engineering applications [1]. For in- stance, in catchment hydrology, as the soil ...
27
Multiscale seismic imaging of the eastern Nankai trough by full waveform inversion
... frequency domain provides a natural framework to exploit redundant wave- number coverage, thanks to wide-aperture illumination [Sirgue and Pratt, ...the inversion of the next ...
5
The truncated Newton method for Full Waveform Inversion
... The very high velocity contrast between the background (300 m.s −1 ) and the concrete foundations (4000 m.s −1 ) generates energetic reflections. In addition, the close distance between the two structures is responsible ...
7
Seismic imaging˸ strategies for visco-acoustic full waveform inversion
... Figure 1.4: Intrinsic attenuation effects for one seismic trace in time domain left and normalized spectrum in frequency domain right, the solid red line is the acoustic wave, and the so[r] ...
213
Full Waveform Inversion and the truncated Newton method
... step in the standard workflow only provides qualitative structures; • the formalism allows to consider a wide variety of imaging problems, and also multi-parameter estimation. FWI has, however, a significant drawback. ...
43