Results 211 to 220 of about 55,280 (259)

Voltammetric Translation with Transformers: Converting Cyclic Voltammograms to Differential Pulse Voltammograms. [PDF]

ACS Meas Sci Au
Chang BY.
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Correlative Full-Intensity Waveform Inversion

IEEE Transactions on Geoscience and Remote Sensing, 2019
Full-waveform inversion (FWI) is considered an effective technique for building high-resolution velocity models by fitting observed seismology waveforms. When the observed waveforms lack low frequencies or when the starting model is dissimilar to the true model, FWI usually suffers from cycle-skipping problems. To mitigate this difficulty, we propose a
Bin He, Yike Liu, Huiyi Lu, Zhendong Zhang 0003   +3 more
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Full Waveform Inversion in Viscoelastic Media

2021
Accumulations of gas hydrates in the bottom layers pose not only a potential threat to offshore engineering structures and shipping. They can also cause the release of significant volumes of methane into the atmosphere. The most natural way to detect gas hydrates is to use seismic methods.
Vladimir A. Cheverda, Ekaterina Efimova, Galina V. Reshetova   +2 more
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Combining Full Waveform Inversion and Tomography: Full Waveform Inversion-guided Tomography

Proceedings, 2015
With the new broadband acquisitions, allowing to record frequencies down to 2.5 Hz, and the new tomographic tools, allowing to resolve for vertical velocity components up to 6 Hz, we have moved velocity model building from the situation of a “mid-frequency gap” to the situation of an overlapping area in terms of the resolution we can expect from ...
T. Allemand, G. Lambaré
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Source-domain full-waveform inversions

Geophysics, 2019
ABSTRACT Conventional full-waveform inversion (FWI) updates a velocity model by minimizing the data residuals between the predicted and observed data at the receiver positions. We have developed a new FWI to update the velocity model by minimizing virtual source artifacts at the receiver positions in the source-domain FWI (SFWI ...
Yulang Wu, George A. McMechan
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Compressive simultaneous full-waveform simulation

Geophysics, 2009
Abstract The fact that the computational complexity of wavefield simulation is proportional to the size of the discretized model and acquisition geometry and not to the complexity of the simulated wavefield is a major impediment within seismic imaging.
Tim T.Y. Lin, Felix J. Herrmann, Yogi A. Erlangga   +2 more
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Resolution Analysis in Full Waveform Inversion

Geophysical Journal International, 2011
We propose a new method for the quantitative resolution analysis in full seismic waveform inversion that overcomes the limitations of classical synthetic inversions while being computationally more efficient and applicable to any misfit measure. The method rests on (1) the local quadratic approximation of the misfit functional in the vicinity of an ...
Fichtner, A., Trampert, J.
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Full Waveform Inversion of Cross-Dipole Acoustic Waveforms

International Petroleum Technology Conference, 2016
Abstract In the present study, we examine the possibility to estimate the anisotropic properties of formations from the waveforms obtained by acoustic logging using numerical simulation. Our numerical model includes a vertical borehole in anisotropic layer with various azimuths.
S. Fuse, H. Mikada, J. Takekawa
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