Effects of Tropical Weathering on Quartz Grain Shape: an Example from Northeastern Australia

Kenneth Pye , Jim Mazzullo

Journal of Sedimentary Research (SEPM)

... weathering and pedogenesis, the magnitude and rate of such changes have not been quantified. Fourier shape analysis of quartz grains from two generations...

Tide- and River-Generated Mud Pebbles from the Fluvial To Marine Transition Zone of the Mekong River Delta, Vietnam

Marcello Gugliotta, Yoshiki Saito, Van Lap Nguyen, Thi Kim Oanh Ta, Toru Tamura, Sojiro Fukuda

Journal of Sedimentary Research (SEPM)

..., S., and Recupero, G.R., 2009, Quantitative evaluation of Tarocco sweet orange fruit shape using optoelectronic elliptic Fourier based analysis...

Sources and Provinces of Late Pleistocene and Holocene Sand and Silt on the Mid-Atlantic Continental Shelf

Deanne Prusak, Jim Mazzullo

Journal of Sedimentary Research (SEPM)

... with the Fourier grain-shape technique, and examined with the scanning electron microscope, in order to determine the sources and distribution of late...

Spectral hydrology: Resolution and uncertainty in multifrequency oscillatory hydraulic tomography

Jeremy R. Patterson, Michael Cardiff

International Meeting for Applied Geoscience and Energy (IMAGE)

... by Fourier coefficients. As an example, consider a confined 2D aquifer. In the frequency domain, the groundwater flow equation becomes: The use of near...

Mathematical Model of Electromagnetic Proppant Effects on Heavy Oil Production Rate

Ardina Dwi Listiani, Sudjati Rachmat

Indonesian Petroleum Association

... and sandstone slab will remain the same. 0 b. Temperature profile in and for Fourier's law of heat conduction : (3) Boundary conditions...

Shape Sorting During Wind Transport of Quartz Silt Grains: DISCUSSION

Kenneth Pye

Journal of Sedimentary Research (SEPM)

...------------------------ that, contrary to possible expectations, more angular (as indicated by Fourier harmonics 17-21) quartz silt grains are, on average, deposited...

Abstracts: The Deconvolution of Multicomponent Trace Vectors; #90173 (2015)

Xinxiang Li, Peter Cary, and Rodney Couzens

Search and Discovery.com

... by the autocorrelation of a segment of the trace. In the Fourier domain the autocorrelation of a trace is its power spectrum. Extending the discussions...

Spatial Scaling of Normal Faults, A-Bomb Canyon, Arizona; #42088 (2017)

Thomas (Hal) H. Hundley, Randall Marrett

Search and Discovery.com

... regularly-s paced fractal clus ters Fourier trough −1 10 0 10 −1 length s cale (logarithmic graduations ) 10 −1 10 1 10 2 Spatial Period...

Diverse fracture properties and their impact on performance in conventional and tight-gas reservoirs, Saudi Arabia: The Unayzah, South Haradh case study

Mohammed S. Ameen, Keith MacPherson, Maher I. Al-Marhoon, Zillur Rahim

AAPG Bulletin

... cube for the study area was analyzed using in-house developed methods, including generalized Hilbert transform, based on the windowed Fourier transform...

La Edad de la Tierra (IN SPANISH), The Age of The Earth

Honorato De Castro

Boletín de la Asociación Mexicana de Geólogos Petroleros (AMGP)

... hipótesis se viene a caer en el problema estudiado por Fourier del muro indefinido que se enfria por contacto. Conocida la conductibilidad media de las rocas...

Estimated Stored Heat in the Clarence-Moreton Basin, New South Wales: A Case Study in Reducing Uncertainties in Thermal Modelling

M. W. Haynes

Petroleum Exploration Society of Australia (PESA)

..., 2012 Figure 1. Location of the Clarence-Moreton Basin. depth to be calculated using Fourier’s Law (Eq. 1). Fourier’s Law, however, presents a very...

Surrogate Optimization under Uncertainty for Geological Carbon Storage

Jose L. Hernandez-Mejia, Yanhua Yuan, Kevin Dugan, Qiuzi Li

International Meeting for Applied Geoscience and Energy (IMAGE)

... for optimal injection well completion location for CO2 geological storage. The proposed methodology uses a pre-trained U-net Fourier Neural Operator...

Analyzing the impact of additive and multiplicative noise on seismic data analysis

Akshika Rohatgi, Andrey Bakulin, Sergey Fomel

International Meeting for Applied Geoscience and Energy (IMAGE)

... noise model This model applies multiplicative noise to seismic traces within the Fourier domain as Xk (ω) = S(ω) ∗ Rk (ω), (2) where S(ω...

Integrated Subsurface Temperature Modeling: Case Study of East Java Basin

Bagus Endar B. Nurhandoko, Sri Widowati , Rizal Kurniadi, M Rizal Abda, Agus Deny Purnama, Rio Martha, Susilowati, ElfaFatiah, M. Rizka Asmarahadi

Indonesian Petroleum Association

... conductivity of various lithologies. The temperature modeling is carried out by finite difference of Fourier’s law and it is assumed that the thermal heat...

Memorial: Robert H. Osborne (1939-1994)

D. S. Gorsline

AAPG Non-Technical and Memorials

... and to modern lake and ocean coasts and depositional environments. Bob pioneered the use of Fourier grain-shape analysis to chart the transport processes...

Exploration for Buried Salt Projections by the Method of Normalized Gradient

N. N. Shcherbakova

Petroleum Geology: A Digest of Russian Literature

... -Contours of normalized gravity gradient in a vertical plane; 2-body approximating transverse section of a salt mass; 3-number of members of a Fourier series...

Disaggregation of Quartzites: RESEARCH-METHOD PAPER

Christopher A. Suczek

Journal of Sedimentary Research (SEPM)

...., 1980, The effect of hydrofluoric acid on quartz shape--Fourier grain shape analysis: Jour. Sed. Petrology, v. 50, p. 644-645. SUCZEK, C. A., 1981...

Gravity Modeling and Its Implications to the Tectonics of the South Caspian Basin

James W. Granath, K. A. Soofi, O. W. Baganz, E. Bagirov

AAPG Special Volumes

.... The derivation of free air gravity anomaly, however, is more complicated because it needs Fourier analysis and subsequent merging of dense orbital...

Detection of Shaly Gas Reserves using Pulsed Neutron Neutron Logging

K. Traxler

Search and Discovery.com

... determination of gas-layers within shaly sand sequences is very fast and easy; especially if combined with Fast Fourier Transformation to differentiate...

Abstract: Advances in Noninvasive Fetal Imaging, by Wesley Lee and Anil Shetty; #90206 (2014)

Search and Discovery.com

Detection of Shaly Gas Reserves using Pulsed Neutron Neutron Logging

K. Traxler

Search and Discovery.com

... determination of gas-layers within shaly sand sequences is very fast and easy; especially if combined with Fast Fourier Transformation to differentiate...

Abstract: Analysis of the Structural Style and Fracture Distribution of the Agdagh Anticline in Southern Kurdistan, Iraq A model for fractured Carbonate Reservoirs; #90172 (2014)

Paul A. MacKay, William Matthews

Search and Discovery.com

... occurrence measured along scan lines into a spatial waveform that can then be analyzed with Fourier transforms. The dominant frequencies...

Abstract: Least Squares Pre-Stack Time Migration for Imaging and Reconstruction of Converted Waves; #90224 (2015)

Aaron Stanton

Search and Discovery.com

... a synthetic data example in which the input data have been regularly decimated. We find several advantages to our approach when compared with Fourier...

Abstract: High Resolution Quantitative Characterization of Organic Rich Mudstones using Laser Confocal Microscopy and Micro-FTffi Imaging; #90283 (2016)

T. D. Jobe, D. Jacobi, S. Csutak, S. Eichmann, W. Li

Search and Discovery.com

... characterization of mineralogy and geochemistry based on non-destructive measurements: Laser Scanning Confocal Microscopy (LSCM) and Micro-Fourier Infrared...

Sources, Distribution, and Mixing of Late Pleistocene and Holocene Sands on the South Texas Continental Shelf

Jim Mazzullo, K. D. Withers

Journal of Sedimentary Research (SEPM)

..., R., 1980, Determination of relative provenance contributions in samples of quartz sand using Q-mode factor analysis of Fourier grain shape data...