Results 21 to 30 of about 40,267 (242)
Enhancement of In-Plane Seismic Full Waveform Inversion with CPU and GPU Parallelization
Applied Sciences, 2022 Full waveform inversion is a widely used technique to estimate the subsurface parameters with the help of seismic measurements on the surface. Due to the amount of data, model size and non-linear iterative procedures, the numerical computation of Full ...
Min Bahadur Basnet +6 more
doaj +1 more source
An Auto-Calibration Algorithm for Hybrid Guided Wave Tomography Based on Full Waveform Inversion
IEEE Access, 2023 Combining with the dispersion characteristics of ultrasonic guided waves, full waveform inversion method shows great application potential in the quantificational detections of defects in plate- and pipe- like structures.
Jiawei Wen +5 more
doaj +1 more source
Remote Sensing, 2021 Slope and roughness are basic geophysical properties of terrain surface, and also sources of error in satellite laser altimetry systems. The full-waveform satellite laser altimeter records the complete echo waveform backscattered from the target surface ...
Zhiqiang Zuo +5 more
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Remote Sensing, 2022 Ground-penetrating radar (GPR) crosshole tomography is widely applied to subsurface media images. However, the inadequacies of ray methods may limit the resolution of crosshole radar images, since the ray method is a type of high-frequency approximation.
Shengchao Wang +5 more
doaj +1 more source
Applied Sciences, 2023 The elastic full-waveform inversion (EFWI) method efficiently utilizes the amplitude, phase, and travel time information present in multi-component seismic recordings to create detailed parameter models of subsurface structures.
Qiyuan Qi +3 more
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Regional-scale joint seismic body- and surface-wave travel time tomography
地球与行星物理论评, 2023 To make full use of seismograms to put tight constraints on the structure of subsurface and earthquake sources has always been the research focus in seismology.
Hongjian Fang +3 more
doaj +1 more source
An efficient method of 3-D elastic full waveform inversion using a finite-difference injection method for time-lapse imaging [PDF]
, 2015 International audienceSeismic full waveform inversion is an objective method to estimate elastic properties of the subsurface and is an important area of research, particularly in seismic exploration community.
Borisov, Dmitry +2 more
core +10 more sources
Convolution Coding and Amplitude Attenuation-Based Full Waveform Inversion
IEEE Access, 2020 Full waveform inversion (FWI) is a powerful method to reconstruct the properties of the subsurface media. However, the standard FWI is a non-unique and ill-posed inversion problem, which requires proper techniques to avoid cycle skipping phenomena ...
Shiqi Dong +4 more
doaj +1 more source
Full Waveform Inversion for NDT using ultrasonic linear arrays
Research and Review Journal of Nondestructive Testing, 2023 Ultrasonic (UT) imaging is a widespread technique for nondestructive testing (NDT). The state-of-the-art UT image reconstruction algorithms are based on delay-and-sum (DAS) operations, which assume constant acoustic velocity across the tested objects ...
Daniel Rossato +5 more
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Scale properties of the seismic wavefield - perspectives for full waveform matching [PDF]
, 2011 Starting from the nondimensionalization of equations of motion we partition the set of the velocity models in equivalence classes, such that the full waveform of an element in a given class can be calculated from the full waveform of any other element in
Aki K. +4 more
core +1 more source