Results 11 to 20 of about 3,299,544 (255)
A synthetic study of acoustic full waveform inversion to improve seismic modelling of firn [PDF]
Annals of Glaciology, 2022 The density structure of firn has implications for hydrological and climate modelling and for ice shelf stability. The firn structure can be evaluated from depth models of seismic velocity, widely obtained with Herglotz-Wiechert inversion (HWI), an ...
Emma Pearce +7 more
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Seismic full waveform inversion in archaeological prospecting [PDF]
, 2023 Seismic full waveform inversion is introduced as novel high-resolution imaging tool in archaeological prospection. The full waveform inversion approach allows the high-resolution characterization of low-contrast sedimentary layers, high-contrast stone ...
De Nil, Denise +6 more
core +1 more source
Transfer Learning Enhanced Full Waveform Inversion [PDF]
, 2023 We propose a way to favorably employ neural networks in the field of non-destructive testing using Full Waveform Inversion (FWI). The presented methodology discretizes the unknown material distribution in the domain with a neural network within an ...
Singh, Divya +2 more
core +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
doaj +1 more source
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
doaj +1 more source
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
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
doaj +1 more source
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 bore reconstruction of woodwind-like instruments
Acta Acustica, 2021 The internal geometry of a wind instrument can be estimated from acoustic measurements. For woodwind instruments, this involves characterizing the inner shape (bore) but also the side holes (dimensions and location).
Ernoult Augustin +3 more
doaj +1 more source