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The AAPG/Datapages Combined Publications Database

Showing 1,226 Results. Searched 189,922 documents.

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The Effect of Hydrofluoric Acid on Quartz Shape--Fourier Grain Shape Analysis: METHOD PAPER

Douglas J. Schultz

Journal of Sedimentary Research (SEPM)

... twenty terms of a closed-form Fourier Series. EHRLICH, R., ORZECK, J., AND WEINBERG, B., 1974, Detrital quartz as a natural tracer-Fourier grain shape...

1980

ABSTRACT: Anisotropic Wavefield Extrapolators by Fourier Technique

G. F. Margrave

CSPG Special Publications

...ABSTRACT: Anisotropic Wavefield Extrapolators by Fourier Technique G. F. Margrave 1998 106 106...

1998

Relationship Between Test Morphology and Bathymetry in Recent Bolivina albatrossi Cushman, Northwestern Gulf of Mexico: ABSTRACT

Anthony C. Gary

AAPG Bulletin

... 1422 1422 69 9. (September) An automated video digitizer and closed-form Fourier series analysis were used in this study to quantify benthic...

1985

A Comparison of Fourier and Fractal Techniques in the Analysis of Closed Forms

Stephen K. Kennedy, Wei-Hsiung Lin

Journal of Sedimentary Research (SEPM)

...A Comparison of Fourier and Fractal Techniques in the Analysis of Closed Forms Stephen K. Kennedy, Wei-Hsiung Lin 1992 Vol. 62 No. 5. (September...

1992

Abstract: Fourier Domain Regularization 5D and More; #90174 (2014)

V. Khatchatrian

Search and Discovery.com

...Abstract: Fourier Domain Regularization 5D and More; #90174 (2014) V. Khatchatrian AAPG Datapages/Search and Discovery Article #90174 CSPG©2014 CSPG...

2014

ABSTRACT: Estimating thermal maturity, generation potential and mineralogical composition of oil shale and post-pyrolysis residues using Fourier transform infrared spectroscopy

Justin E. Birdwell

The Society for Organic Petrology (TSOP)

... applied Fourier transform (FT) IR spectroscopy in a series of studies of oil shales from the Mahogany zone of the Eocene Green River Formation collected...

2010

Abstracts: Application of Fractional Fourier Transform in Cepstrum Analysis; #90173 (2015)

K. H. Miah, R. H. Herrera, M. van der Baan, and M. D. Sacchi

Search and Discovery.com

...Abstracts: Application of Fractional Fourier Transform in Cepstrum Analysis; #90173 (2015) K. H. Miah, R. H. Herrera, M. van der Baan, and M. D...

2015

An Application of Optical Fourier Analysis to the Study of Geological Linear Features in ERTS-1 Imagery of California

Aderbal C. Corrêa, Ronald J. P. Lyon

Utah Geological Association

...An Application of Optical Fourier Analysis to the Study of Geological Linear Features in ERTS-1 Imagery of California Aderbal C. Corrêa, Ronald J. P...

1974

Abstract: Tau-P Seismic Data Processing: Fast Slant Stack Using the Hartley Transform

Leong Lap Sau, Ng Tong San

Geological Society of Malaysia (GSM)

... 1Universiti Sains Malaysia 2PETRONAS Carigali Sdn. Bhd. A primary objective of seismic data processing is to recover the reflection series from a recorded...

1991

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

Seismic Time-Frequency Analysis by Empirical Mode Decomposition; #41513 (2015)

Jiajun Han, Mirko van der Baan

Search and Discovery.com

... Fourier transform. Application on field data thus offers the potential of highlighting subtle geologic structures that might otherwise escape...

2015

Abstract: Azimuthal Fourier Coefficients: A Simple Method to Estimate Fracture Parameters; #90174 (2014)

Jon Downton and Benjamin Roure

Search and Discovery.com

...) and then Sayers and Dean (2001) demonstrated that it is possible to express the azimuthal AVO reflectivity response in terms of a Fourier series as a function...

2014

Fold Geometry Within Part of Michigan Basin, Michigan

E. H. Timothy Whitten , Walter A. Beckman, Jr.

AAPG Bulletin

... values. These descriptors are calculated for the folded bedding planes simulated by a double Fourier series surface-fitting technique. The Dundee...

1969

Use of Computers by Geologists: Abstract

Daniel F. Merriam

Tulsa Geological Society

..., and cosine-theta) harmonic analysis (includes time series, Fourier and power-spectrum analysis) auto- and cross-association PCA (principal component...

1967

Grain Shape Analysis--Application to Problems of Sediment Source and Transport: ABSTRACT

Jim Mazzullo

AAPG Bulletin

... of quartz grains contain a valuable record of their source and transport history. Grain shape can be measured with a Fourier series in closed form, which...

1982

Petroleum Exploration--Real World Examples Using Microcomputers: ABSTRACT

R. Mark Maslyn

AAPG Bulletin

... of double Fourier series to model oil-productive paleotopography in the eastern Powder River basin of Wyoming. Geophysicists are more accustomed...

1982

Abstracts: Empirical Mode Decomposition and Robust Seismic Attribute Analysis; #90173 (2015)

Jiajun Han and Mirko van der Baan

Search and Discovery.com

... that obtained using traditional time-frequency analysis tools, such as Fourier transform and wavelet transforms. Also known as the Hilbert-Huang transform...

2015

The Origin of Shape Frequency Distributions and the Relationship Between Size and Shape

Robert Ehrlich, P. Jeffrey Brown , Jeffrey M. Yarus , Robert S. Przygocki

Journal of Sedimentary Research (SEPM)

... variables, the Fourier technique allows compartmentalizing of the maximum projection profile of quartz (or any other) particles into a series...

1980

Finite Difference Modeling: Part II: How to clean numeric time dispersion

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... dispersion implies that the higher frequency components of the signal propagate at the wrong speed. Here we show how the Fourier transform can be used...

2018

An Exact Method for Characterization of Grain Shape

Robert Ehrlich, Bernhard Weinberg

Journal of Sedimentary Research (SEPM)

... as precisely as needed by Fourier series expansion of the radius about the center of mass utilizing coordinates of peripheral points. Empirical results...

1970

The Effects of Fluvial Abrasion on the Shapes of Quartz Sand Grains

Mark Peterson , Jim Mazzullo

GCAGS Transactions

... series inclosed form (Ehrlich and Weinberg, 1970). In a Fourier analysis, the digitized shape is partitioned into a series of 23 standard shape...

1987

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