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Waveform inversion

A machine learning based fast forward solver for ground penetrating radar with application to full waveform inversion

A machine learning based fast forward solver for ground penetrating radar with application to full waveform inversion

... Abstract—The simulation, or forward modeling, of Ground Penetrating Radar (GPR) is becoming a more frequently used approach to facilitate interpretation of complex real GPR data, and as an essential component of ...

9

Rupture process of the 2007 Noto Hanto earthquake: waveform inversion using empirical Green’s function

Rupture process of the 2007 Noto Hanto earthquake: waveform inversion using empirical Green’s function

... A waveform inversion study was conducted to reveal the rupture process of the 2007 Noto Hanto, Japan, earthquake using near-source strong ground motion ...the inversion indicated that the rupture ...

6

Fichtner, Andreas
  

(2010):


	Full seismic waveform inversion for structural and source parameters.


Dissertation, LMU München: Fakultät für Geowissenschaften

Fichtner, Andreas (2010): Full seismic waveform inversion for structural and source parameters. Dissertation, LMU München: Fakultät für Geowissenschaften

... full-waveform inversion is the adjoint method, originally developed in the context of optimal control theory (Lions, 1968) and introduced to geophysics by Chavent et ...

266

Full-Waveform Inversion with Scaled-Sobolev Preconditioning Applied to Vibroseis Field Data

Full-Waveform Inversion with Scaled-Sobolev Preconditioning Applied to Vibroseis Field Data

... It is right that we should be thankful, for we have been given much. At the outset, I must admit that it is nearly impossible for me to properly acknowledge the many people who helped me during my degree. But here is my ...

150

Investigating the use of 3-D full-waveform inversion to characterize the host rock at a geological disposal site

Investigating the use of 3-D full-waveform inversion to characterize the host rock at a geological disposal site

... A common problem with performing FWI is cycle skipping, which leads to a recovered velocity model that is located in a local rather than global minimum (Pratt 1999). Cycle skipping occurs if the starting model is unable ...

12

TARGETED FULL-WAVEFORM INVERSION FOR RECOVERING THIN- AND ULTRA-THIN-LAYER PROPERTIES USING RADAR AND SEISMIC REFLECTION METHODS

TARGETED FULL-WAVEFORM INVERSION FOR RECOVERING THIN- AND ULTRA-THIN-LAYER PROPERTIES USING RADAR AND SEISMIC REFLECTION METHODS

... full-waveform inversion algorithm to quantify thin-layer permittivity (ԑ), thickness (d), and conductivity (σ) for non-aqueous phase liquid (NAPL) thin (≤½ dominant wavelength λ) and ultra-thin (≤⅛λ) layers ...

231

Mitigating non-linearity in full waveform inversion using scaled-Sobolev norms

Mitigating non-linearity in full waveform inversion using scaled-Sobolev norms

... method had the promise of giving true scatterer amplitudes, it was still reliant on the fact that the background velocity model is required, just like conventional seismic imaging. The least squares objective function ...

153

Realistic FDTD GPR antenna models optimized using a novel linear/non-linear full waveform inversion

Realistic FDTD GPR antenna models optimized using a novel linear/non-linear full waveform inversion

... full waveform inversion (FWI), and machine learning schemes using synthetic training ...excitation waveform, so the model must contain a complete description of the antenna including the excitation ...

11

Rupture process of the 2007 Chuetsu oki, Niigata, Japan, earthquake—Waveform inversion using empirical Green’s functions—

Rupture process of the 2007 Chuetsu oki, Niigata, Japan, earthquake—Waveform inversion using empirical Green’s functions—

... A waveform inversion was conducted to reveal the rup- ture process of the 2007 Chuetsu-oki, Niigata, Japan, earth- quake using strong ground motion ...the inversion but also ...

8

Randomly distributed unit sources to enhance optimization in tsunami waveform inversion

Randomly distributed unit sources to enhance optimization in tsunami waveform inversion

... The involvement of stochastic processes in the opti- mization increased the ability to reveal uncertainties in the tsunami source, which are difficult to discern using deterministic approaches. However, as the signature ...

10

Strategies for visco-acoustic waveform inversion in the Laplace-Fourier domain, with application to the Nankai subduction zone

Strategies for visco-acoustic waveform inversion in the Laplace-Fourier domain, with application to the Nankai subduction zone

... acoustic waveform inversion of wide-angle reflection data in retrieving the subsurface velocity ...acoustic waveform inversion is the most commonly used technique, 3D implementations are now ...

239

Influential Factors Analysis of Full Waveform Inversion In Time Domain For Near-Surface Velocity Modeling

Influential Factors Analysis of Full Waveform Inversion In Time Domain For Near-Surface Velocity Modeling

... reservoir inversion. The full waveform inversion(FWI) is recognized widely as a kind of high precision, multi-parameter inversion tool, so it plays an unique advantages role in the velocity ...

6

Full-waveform inversion of short-offset, band-limited seismic data in the Alboran Basin (SE Iberia)

Full-waveform inversion of short-offset, band-limited seismic data in the Alboran Basin (SE Iberia)

... travel-time inversion pro- vides reference models that are accurate enough to apply full- waveform inversion to relatively short offset streamer data in deep-water settings starting at a field-data ...

23

Validation of ground penetrating radar full-waveform inversion for field scale soil moisture mapping

Validation of ground penetrating radar full-waveform inversion for field scale soil moisture mapping

... full-waveform inversion of ultra-wideband radar data for mapping soil mois- ture and uncertainties in the soil moisture maps were evaluated by three different ...data inversion, according to measure- ...

18

Systematic difference between first motion and waveform inversion solutions for shallow offshore earthquakes due to a low angle dipping slab

Systematic difference between first motion and waveform inversion solutions for shallow offshore earthquakes due to a low angle dipping slab

... Systematic difference between first-motion and waveform-inversion solutions for shallow offshore earthquakes was examined by using the seismograms of the 2016 Off Mie (Mw 5.8) earthquake occurred at a depth ...

8

Waveform inversion for 3 D S velocity structure of D′′ beneath the Northern Pacific: possible evidence for a remnant slab and a passive plume

Waveform inversion for 3 D S velocity structure of D′′ beneath the Northern Pacific: possible evidence for a remnant slab and a passive plume

... conduct waveform inversion to infer the three-dimensional (3-D) S-velocity structure in the lowermost 400 km of the mantle (the D′′ region) beneath the Northern Pacific ...

8

Ultrasound medical imaging using 2d viscoacoustic full-waveform inversion = Medizinische Bildgebung mit Ultraschall unter Nutzung der 2d viskoakustischen Wellenfeldinversion

Ultrasound medical imaging using 2d viscoacoustic full-waveform inversion = Medizinische Bildgebung mit Ultraschall unter Nutzung der 2d viskoakustischen Wellenfeldinversion

... adaptive waveform inversion proposed by Warner and Guasch (2016) and the com- bination of wave-equation reflection traveltime inversion with dynamic warping and full-waveform inversion ...

138

Source process of the 2011 off the Pacific coast of Tohoku Earthquake inferred from waveform inversion with long period strong motion records

Source process of the 2011 off the Pacific coast of Tohoku Earthquake inferred from waveform inversion with long period strong motion records

... We have investigated the rupture process of the 2011 off the Pacific coast of Tohoku Earthquake using a multi- time-window linear waveform inversion method using long-period strong-ground motion data. From ...

6

Source rupture processes of the foreshock and mainshock in the 2016 Kumamoto earthquake sequence estimated from the kinematic waveform inversion of strong motion data

Source rupture processes of the foreshock and mainshock in the 2016 Kumamoto earthquake sequence estimated from the kinematic waveform inversion of strong motion data

... assumed a fault model consisting of two fault segments based on the aftershock distribution and the surface trace of known active faults. Figure 2 shows spatial distribu- tions of the foreshocks and aftershocks in four ...

11

Rupture process of the main shock of the 2016 Kumamoto earthquake with special reference to damaging ground motions: waveform inversion with empirical Green’s functions

Rupture process of the main shock of the 2016 Kumamoto earthquake with special reference to damaging ground motions: waveform inversion with empirical Green’s functions

... The relation between the size of the small event, size of the subfault, and frequency component to be analyzed is as follows: In this formulation, a sufficiently small event that can be regarded as a point source is used ...

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