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The AAPG/Datapages Combined Publications Database
Showing 1,537 Results. Searched 200,357 documents.
ABSTRACT: Development of fold hinges in a quartz arenite at subgreenschist facies conditions; #90018 (2003)
Jennie Cook
Search and Discovery.com
... to differences in fold geometry. Fluid inclusions, solution geometry, and potentially the Fourier transform infrared spectroscopy (FTIR) will be used...
2003
ABSTRACT: Direct Hydrocarbon Indication Using Instantaneous Spectral Analysis; #90017 (2003)
John Castagna
Search and Discovery.com
... excellent time and frequency localization utilizing wavelet transforms to avoid windowing problems that complicate conventional Fourier analysis...
2003
Abstract: Antialiasing 5D Interpolation; #90187 (2014)
Stephen K. Chiu
Search and Discovery.com
..., Houston, USA Abstract Fourier-based minimum weighted norm interpolation (MWNI) has been widely used to regularize land seismic data...
2014
Abstract: Prestack Depth Migration with the Gabor Transform; #90211 (2015)
Yongwang Ma and Gary Margrave
Search and Discovery.com
...-interpolation (GPSPI) wavefield extrapolation using a Gabor, or windowed Fourier, transform to localize the wavefield. The key to an efficient algorithm...
2015
High-resolution angle gather tomography with Fourier neural operators
Sean Crawley, Guanghui Huang, Ramzi Djebbi, Jaime Ramos, Nizar Chemingui
International Meeting for Applied Geoscience and Energy (IMAGE)
...High-resolution angle gather tomography with Fourier neural operators Sean Crawley, Guanghui Huang, Ramzi Djebbi, Jaime Ramos, Nizar Chemingui High...
2023
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...
Unknown
Gabor Depth Migration using a New Adaptive Partitioning Algorithm
Yongwang Ma
Search and Discovery.com
... migration, the temporal Fourier transform is applied to the input seismic data to transform to the frequency domain. Then the spatial Fourier...
Unknown
ABSTRACT: THE VARIATION OF ORGANIC MATTER IN THE WEATHERING OF COAL GANGUE AND PROCESS SOIL FORMING
Juan-juan Li, Yuegang Tang, Jintao Ma, Xiaole Shi
The Society for Organic Petrology (TSOP)
... analysis, Fourier transform infrared spectroscopy and cross-polarization with magic angle spinning 13 C nuclear magnetic resonance (CP-MAS 13C NMR...
2006
The Effects of Fluvial Abrasion on the Shapes of Quartz Sand Grains
Mark Peterson , Jim Mazzullo
GCAGS Transactions
... with the Fourier technique and examined with the scanning electron microscope. The Fourier technique shows that there are no significant changes in the shapes...
1987
Abstract: Quantitative Paleobathymetry Using Geochemistry and Shape Analysis of Benthic Foraminifera, Offshore Gulf of Mexico
Douglas F. Williams , Anthony C. Gary , Nancy Healy-Williams
GCAGS Transactions
... foraminifera using fourier series analysis have shown that many taxa exhibit shape changes which are also correlatable to known environmental variables...
1988
ABSTRACT: Morphometric Analysis of Sphaeroidinellopsis: New Biostratigraphic Information from Gradually Evolving Lineages, by A. C. Gary, N. Healy-Williams, and D. F. Williams; #91043 (2011)
Search and Discovery.com
2011
Grain Size-Frequency Distributions from Thin-Section Data: NOTES
N. H. Gray
Journal of Sedimentary Research (SEPM)
... Crofts, N.Y. 549 p. STOKES, A. R., 1948. A numerical Fourier-analysis method for the correction of widths and shapes of lines on X-ray powder photographs...
1969
ABSTRACT: Avoiding Pitfalls When Mapping with Personal Computers, by Joseph E. Robinson and Paul D. Willette; #91022 (1989)
Search and Discovery.com
1989
ABSTRACT: Avoiding Pitfalls When Mapping with Personal Computers, by Joseph E. Robinson and Paul D. Willette; #91025 (2010)
Search and Discovery.com
2010
POCS Method for Seismic Data Reconstruction of Irregularly Sampled Data
Elwyn J. Galloway
Search and Discovery.com
... is the fourier transform operator, T k is a threshold operator, and B is a band-limiting operator. The threshold operator acts to remove any points below...
Unknown
Decoding Molecular Geochemistry of Kerogen From Marcellus Shale
Search and Discovery.com
N/A
POCS Method for Seismic Data Reconstruction of Irregularly Sampled Data
Elwyn J. Galloway
Search and Discovery.com
... is the fourier transform operator, T k is a threshold operator, and B is a band-limiting operator. The threshold operator acts to remove any points below...
Unknown
Abstract: Making FX Interpolation More Robust by Spectrum-guided Reconstruction; #90171 (2013)
Mostafa Naghizadeh and Mauricio Sacchi
Search and Discovery.com
... interpolation in the F-X domain: Geophysics, 56, 785–796. Xu, S. and D. Pham, 2004, Seismic Data Regularization with Anti-Leakage Fourier Transform...
2013
Abstracts: Accurate Declipping Hybrid Algorithm for Ground Penetrating Radar Data; #90173 (2015)
Akshay Gulati and R. J. Ferguson
Search and Discovery.com
... combination of Kaiser Bessel Non uniform fast Fourier transform (NFFT) and Projection on Convex Set (POCS) to restore clippings. This algorithm is tested...
2015
Abstract: Time-Frequency Polarization Analysis and Filtering; #90211 (2015)
Robert Pinnegar
Search and Discovery.com
... in the time domain, or the frequency domain, by combining information from both domains to produce a TFR. The windowed Fourier transform is not the only TFR...
2015
Abstract: Characterizing Spatial Deformation Patterns in a Laramide Rocky Mountain Basin; #90301 (2017)
Cody W. Bomberger, Brianna Berg, Jenica Andersen, Michael H. Hofmann
Search and Discovery.com
... that are important to hydrocarbon exploration. Using techniques from Fourier analysis, expanded into two dimensions, we identify characteristic scales of structural...
2017
Roughness of Limestone and Quartzite Pebbles by the Modified Fourier Method
Eliza Czarnecka, J. E. Gillott
Journal of Sedimentary Research (SEPM)
...Roughness of Limestone and Quartzite Pebbles by the Modified Fourier Method Eliza Czarnecka, J. E. Gillott 1980 Vol. 50 No. 3. (September), Gravel...
1980
An Exact Method for Characterization of Grain Shape
Robert Ehrlich, Bernhard Weinberg
Journal of Sedimentary Research (SEPM)
...) For the purpose of evaluation, it is convenient to transform the Fourier series of equation (1) to the form [EQUATION (7) wherein the transformations...
1970
Abstract: Efficency and Accuracy Enhancement for One-way Wave Equation Migration Through Improved Mapping Function in the Time-shift Imaging Condition; #90171 (2013)
Mark Ng
Search and Discovery.com
... such coarse wavefield extrapolation depth steps are employed. Specifically, I incorporate a simple split-step Fourier statics correction term...
2013
Origin of Patterns of Quartz Sand Types on the Southeastern United States Continental Shelf and Implications on Contemporary Shelf Sedimentation--Fourier Grain Shape Analysis
P. Jeffrey Brown , Robert Ehrlich, Donald J. Colquhoun
Journal of Sedimentary Research (SEPM)
...--Fourier Grain Shape Analysis P. Jeffrey Brown , Robert Ehrlich, Donald J. Colquhoun 1980 Vol. 50 No. 4. (December), Quartz sands in the fine sand range...
1980