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The AAPG/Datapages Combined Publications Database
Showing 661 Results. Searched 195,372 documents.
Compensating for the Compensation Effect Using Simulated and Experimental Kinetics From the Bakken and Red River Formations, Williston Basin, North Dakota
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N/A
Calculation of a Rate Index for the Bakken Formation (Devonian-Mississippian) in North Dakota Using Experimentally Determined Kinetics, Current Formation Temperatures, and Total Reactive Kerogen Mass
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N/A
Grain Shape Analysis: Application to Problems of Sediment Source and Transport
Dr. Jim Mazzullo
GCAGS Transactions
... to the empiric shape. The relative contribution of each harmonic to the empiric shape is called "harmonic amplitude value", or simply "amplitude...
1982
Contribution of Salinas River Sand to the Beaches of Monterey Bay, California, During the 1978 Flood Period: Fourier Grain-Shape Analysis
Ross A. Clark , Robert H. Osborne
Journal of Sedimentary Research (SEPM)
... beach sand. The average mean harmonic amplitude spectrum appears similar to the southern beach and Salinas River distributions. Chi-square tests...
1982
The Effects of Eolian Sorting and Abrasion Upon the Shapes of Fine Quartz Sand Grains
Jim Mazzullo, Donald Sims, David Cunningham
Journal of Sedimentary Research (SEPM)
... can be represented by a series of standard-shape components, called harmonics. Each harmonic is of the form Rn cos(n - n), where Rn represents...
1986
Scanning Electron Micrographs of Quartz Sand Grains from Cold Environments Examined Using Fourier Shape Analysis
Julian A. Dowdeswell
Journal of Sedimentary Research (SEPM)
... and subaerial weathering in cold environments. Mean harmonic amplitude spectra and roughness coefficients are calculated, and three problems are investigated...
1982
Spalled Quartz Overgrowths as a Potential Source of Silt
Stephen K. Kennedy, Fehmi Arikan
Journal of Sedimentary Research (SEPM)
... component, or harmonic, is a specific geometric form; the second measures elongation, the third measures triangularity, and the higher harmonics...
1990
Abstract: Tertiary Deltaic Cycles on Unstable Craton Margin, Banks Island, Arctic Canada, by A. D. Miall; #90972 (1976).
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1976
Abstract: The Eruption of Mount St. Helens
Allen J. Fiksdal
GCAGS Transactions
... (including harmonic tremors), steam and gas venting, dome formation, periodic major eruptions, and pyroclastic flows keep residents, officials...
1981
Abstract: Non-Linear Effects in Reservoirs: Are We Missing Something?
Bruce M Hartley
Petroleum Exploration Society of Australia (PESA)
... are small. Linear laws lead to simple equations that can be solved by simple harmonic motions, and therefore predictable behavior. All materials...
2001
The Effect of Hydrofluoric Acid on Quartz Shape--Fourier Grain Shape Analysis: METHOD PAPER
Douglas J. Schultz
Journal of Sedimentary Research (SEPM)
..., this analysis provides a quantitative two-dimensional description of grain shape, expressed as shape components, or harmonics. Each harmonic represents...
1980
Correlation of Mean Sizes Obtained from Size Measurement by Thin-Section and Loose-Grain Methods: ABSTRACT
Basanta K. Sahu
AAPG Bulletin
..., respectively; where R.B. is the residual bias [EQUATION] hm is the harmonic mean; bar above letter indicates arithmetic mean; capital and small letters refer...
1970
Abstract: Lunar Perigee-Syzygy-Declination Cycle Of 8 years: Evidence in Rainfall Records, by J. E. Sanders; #90954 (1995).
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1995
Abstract: Application of Adaptive Lattice Filtering in Sonic Well Log, by Z. Zhou and T. W. Spencer; #90955 (1995).
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1995
Recognition of Sand Body Depositional Environments: Limitations of Fourier Analysis and New Approach to Grain-Shape Analysis: ABSTRACT
James M. Parks
AAPG Bulletin
...-shape analysis have not lived up to initial hopes. The potential of Fourier analysis is reduced when harmonic amplitudes are used without considering...
1981
ABSTRACT: The Importance of Quantitative Stratigraphic Modeling to Basin Modeling, by M. D. Matthews and M. J. Zeitlin; #91021 (2010)
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2010
Reservoir Volume and Production Decline Programs for the IBM-PC: ABSTRACT
Livingston Porter, Jr.
AAPG Bulletin
... parameters are calculated. Hyperbolic, exponential, or harmonic decline may be specified, and decline rates may be either entered or calculated. Specifically...
1984
Abstract: Three Dimensional Gravity Modelling of Southern African Crust and Upper Mantle, by Susan J. Webb and David E. James; #90082 (2008)
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2008
Implications from Transfer Functions when Comparing Seismic Data from MEMS Accelerometers and Geophones
Michael S. Hons
Search and Discovery.com
... seismic sensors are based on an inertial mass held by a spring. They are both single-degree-of-freedom damped harmonic oscillators and are thus...
Unknown
Implications from Transfer Functions when Comparing Seismic Data from MEMS Accelerometers and Geophones
Michael S. Hons
Search and Discovery.com
... seismic sensors are based on an inertial mass held by a spring. They are both single-degree-of-freedom damped harmonic oscillators and are thus...
Unknown
Abstract: Early Prediction of Ultimate Production Calibrated to Historical Data, Method for Unconventional Gas; #90172 (2014)
Jean-Yves Chatellier
Search and Discovery.com
... are harmonic pseudo decline curves that are consistently in line with the productivity indicated by traditional methods. The last step has been to determine how...
2014
Abstract: Structural geology of the northern Liard Range, Franklin Mountains, Northwest Territories; #90225 (2015)
Glenn F. Hynes, John M. Dixon, and Larry S. Lane
Search and Discovery.com
...-dipping crestal surfaces and steeply dipping east and west limbs. The folds vary in complexity from ridge to ridge with some folds being harmonic while...
2015
Abstract: A New Heat Flow Map of the Williston Basin; #91206 (2023)
William D. Gosnold, J. Crowell, B. Brunson, S. Vashagjoam, F.Saberi, E. Giymah, O. Oni, E. Uzuegbu
Search and Discovery.com
... flow using lithostratigraphy and the harmonic mean thermal conductivities to produce a well-constrained heat flow map of the Williston Basin...
2023
Some Inference Problems in Paleocurrent Studies
David J. Sanderson
Journal of Sedimentary Research (SEPM)
... distribution. It can be seen that the vector summation method used above is similar to the calculation of the phase angle of the lth harmonic of a Fourier...
1973
A Vertical Pattern of Variation in the St. Peter Sandstone--Fourier Grain Shape Analysis
James M. Mazzullo, Robert Ehrlich
Journal of Sedimentary Research (SEPM)
... of the "nth" harmonic and the remainder concerns the phase angle of that harmonic. The set of harmonic amplitudes constitutes the "harmonic amplitude...
1980