Adaptive Eigenstructure Classification and Stochastic Decorrelation Filters for Coherent Interference Suppression in the Acoustic Zoom Method, #41503 (2014).

J. Guigne, S. Azad, C. Clements, A. Gogacz, W. Hunt, A. Pant, J. Stacey

Search and Discovery.com

... eigen-structure methods. The resulting algorithm is analogous to the Hough transform (in image processing) extended to patterns for geophysical re...

Spherical-Wave Computational AVO Modelling in Elastic and Anelastic Isotropic Two-Layer Media; #41564 (2015)

Arnim B. Haase, Charles P. Ursenbach

Search and Discovery.com

.... They are repeated for all frequency points desired in the output bandwidth, and then the time domain response is found by inverse Fourier transform...

Abstracts: Full Waveform Inversion Using One-way Migration and Well Calibration; #90173 (2015)

Gary F. Margrave, Robert J. Ferguson, and Chad M. Hogan

Search and Discovery.com

..., the hat (^) over a variable indicates its temporal Fourier transform, ˆ ˆ  s  x, z ,   is a model of the source wavefield for source s propagated...

Velocity estimation via model order reduction

Alexander V. Mamonov, Liliana Borcea, Josselin Garnier, Jrn Zimmerling

International Meeting for Applied Geoscience and Energy (IMAGE)

... f (t) to be an even function, with a nonnegative Fourier transform f (ω) ≥ 0 that is analytic. The inverse problem is to estimate the velocity c(x...

Abstract: Characterizing Dipping Fractures from P-wave Amplitude Versus Azimuth Studies; #90187 (2014)

Jon Downton and Hampson Russell

Search and Discovery.com

.... There are seven unknown parameters for six data basis functions so the inverse problem is fundamentally undetermined. This is consistent...

Fracture Geometry Measurements by Analyzing Multiwell Communications

Sofya Sizova, Roman Korkin

Unconventional Resources Technology Conference (URTEC)

... at different velocities. This property should be considered when studying the offset pressure. Applying the Fourier transform to the pressure at the active...

Accelerating innovation with software abstractions for scalable computational geophysics

Mathias Louboutin, Philipp Witte, Ali Siahkoohi, Gabrio Rizzuti, Ziyi Yin, Rafael Orozco, Felix J. Herrmann

International Meeting for Applied Geoscience and Energy (IMAGE)

..., inverse problems based on the wave-equation (e.g., medical ultrasound). We developed a software environment aimed at scalable research and development...

PINNslope: Physics-informed neural network slope prediction and interpolation with positional encoding

Francesco Brandolin, Matteo Ravasi, Tariq Alkhalifah

International Meeting for Applied Geoscience and Energy (IMAGE)

... functions (Linear Fourier Features, modified Linear Fourier Features, Random Fourier Features, Gaussian Encoding) are compared to evaluate which one will bene...

Comparison of Bed Form Variance Spectra Within a Meander Bend During Flood and Average Discharge

Raymond A. Levey, Bjorn Kjerfve, Rufus T. Getzen

Journal of Sedimentary Research (SEPM)

...., KAENEL, R. A. LANG, W. W., MALING, G. C., JR., NELSON, D. E., RADERG, C. M, AND WELCH, P. D., 1967, What is the fast Fourier transform?: IEEE Trans. Audio...

A 3-D ground-penetrating radar and wavelet transform analysis of the morphology of shoreface deposits in the Upper Cretaceous Ferron Sandstone Member, Utah

Keumsuk Lee, Robert Szerbiak, George A. McMechan, Namsoon Hwang

AAPG Bulletin

... followed by the analysis results.Two-Dimensional Continuous Wavelet DecompositionThe CWT is related to the Fourier transform but has the added advantage...

Sparse time-frequency representation based on Unet with domain adaptation

Yuxin Zhang, Naihao Liu, Yang Yang, Zhiguo Wang, Jinghuai Gao, Xiudi Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

.... SPARSE SHORT-TIME FOURIER TRANSFORM STFT is a widely used tool in seismic data processing, which is defined by N 2π f (n)g∗ (n − m)e− j N nk , ST FT...

Interpolating Wavelet Multiscale Inversion for Seismic Waveform

Search and Discovery.com

Angle-constrained VSP least-squares reverse-time migration based on a high-efficiency stabilized Poynting vector

Xuan Ke, Mauricio Sacchi, Ying Shi

International Meeting for Applied Geoscience and Energy (IMAGE)

...he forward and inverse spatial Fourier transform, respectively. It is important to note that equation (12) is an approximation, which for our imaging...

A fractal model for hydrocarbon resource assessment with an application to the natural gas play of volcanic reservoirs in Songliao Basin, China

Caineng Zou, Qiulin Guo, Jinghong Wang, Hongbing Xie

CSPG Bulletin

... developed on the basis of stochastic simulation technique with the Fourier transform power spectrum approach (Yao, 1998b). In this approach, power...

Application of Frequency-Dependent Attributes for Gas Prospect Identification

Vittorio De Tomasi, Alfonso Junio Marini, Maurizio Ferla, Francesca de Finis

International Meeting for Applied Geoscience and Energy (IMAGE)

...., 2014) to time-frequency methods like short Fourier transform, wavelet transform, etc. We demonstrate here a method based upon Tikhonov regularization...

Fine description of composite channel sand bodies based on multiseismic attribute CMY fusion technology

Zhenglong Zhang, Jianli Wang, Hebing Tang, Xuetong Liu

International Meeting for Applied Geoscience and Energy (IMAGE)

... channels. response characteristics of faults or lithological boundaries, this method uses 3D Fourier transform technology to calculate the dip...

3D GPR data mel-frequency cepstral coefficients features for effective CNN classification of urban utilities

Jide Nosakare Ogunbo, Sang Hun Baek, Sang-Wook Kim

International Meeting for Applied Geoscience and Energy (IMAGE)

... cosine transform decorrelated parameters computed through a transformation of the logarithmically compressed filter-output energies (Ganchev et al., 2005...

Pre-drill Reservoir Evaluation Using Passive Seismic Imaging

Charles Sicking, Jan Vermilye, Ashley Yaner

Unconventional Resources Technology Conference (URTEC)

... this method to separate the wavelet propagating in the Earth from the reflectivity. Oppenheim derived the method of using the Fourier transform to take...

Research on reservoir prediction based on compressed sensing and inversion theory

Qing Zhou, Jianli Wang, Qian Yu, Heng Zhang

International Meeting for Applied Geoscience and Energy (IMAGE)

... in the frequency domain. Finally, perform inverse Fourier transform to obtain the seismic data after low-frequency compensation: s  F 1[ L( R)  H...

High-resolution imaging using Gaussian beam point-spread-function deconvolution

Jidong Yang, Jianping Huang, Hejun Zhu, George McMechan

International Meeting for Applied Geoscience and Energy (IMAGE)

..., h) = √ 3 2 σ2 ( 2πσ) Psf (x, h), (4) where Fh is the multidimensional Fourier transform for −1 subsurface offsets, and Fh is the corresponding...

Kronecker neural networks for the win: Overcoming spectral bias for PINN-based wavefield computation

Umair bin Waheed

International Meeting for Applied Geoscience and Energy (IMAGE)

... by solving equation (1). The time-domain solution is then obtained using the inverse Fourier transform of the superposition of the single-frequency...

Reconstruction of the Subsurface Reflected Wavefield on a Dense Grid from Multisensor Streamer Data

M. Vassallo, K. Eggenberger, D.J. van Manen, P. Watterson, A. Raskopin, A. Özbek

Indonesian Petroleum Association

...., 2003, Seismic trace interpolation in the Fourier transform domain: Geophysics, 68, 355– 369. Ikelle, L., and Amundsen, L., 2005, Introduction...

The Determination of Highly Fractured Zone by HVSR Method and its Application on EOR Project Development

Felix Andrean, Muhammad Kukuh Al-Rasyid, Dhara Adhnandya Kumara, Agus Riyanto

Indonesian Petroleum Association

... source software (http://www.geopsy.org). Fast Fourier Transform (FFT) is applied to convert the time domain signal into frequency domain. Additionally...

Mineralogical, Geothermal, and Porosity Analysis of the Eagle Mills Formation, Newton County, Mississippi

Tim Palmer, David Dockery

GCAGS Transactions

.... R., M. M. Herron, and S. L. Herron, 2017, Comparison of quantitative mineral analysis by X-ray diffraction and Fourier transform infrared spectroscopy...

Large-scale 3D Inversion of Helicopter Electromagnetic Surveys for Oil Sands Exploration near Fort McMurray, Alberta, Canada; #41303 (2014)

Leif H. Cox, Glenn A. Wilson, Michael S. Zhdanov, Jonathan Rudd, and John Wilson

Search and Discovery.com

... and Zhdanov, 2002). For time-domain AEM, system responses and sensitivities are obtained by Fourier transform of the frequency-domain responses...