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The AAPG/Datapages Combined Publications Database

Showing 5,455 Results. Searched 200,293 documents.

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Deltaic Depositional Processes in a Glacier-Fed Lake: A Model for the Fluvial/Lacustrine Interface

Jim Bogen

Special Publications of SEPM

... as a sum of the time meaned and fluctuating velocity: (3) During a time increment At, the particle moves a distance AX in the horizontal direction and -AY...

1987

The Use of Ground-Penetrating Radar for Characterizing Sediments Under Transient Flow Conditions

Michael B. Kowalsky, Yoram Rubin, Peter Dietrich

Special Publications of SEPM

... in a sandpit at different antenna frequencies after burying reflectors at depths on the order of a meter. Accurate Relating GPR Reflection Images to Spatial...

2004

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

Jiajun Han and Mirko van der Baan

Search and Discovery.com

... into a sum of intrinsic oscillatory components, called Intrinsic Mode Functions (IMFs). Each IMF has different frequency components, potentially...

2015

Chapter 8: Petrophysical Characteristics of the Ivie Creek Case-Study Area - Geological and Petrophysical Characterization of the Ferron Sandstone for 3-D Simulation of a Fluvial-Deltaic Reservoir (MP-02-6)

R.D. Jarrard, M.A. Chan, C.B. Forster, S.H. Snelgrove

Utah Geological Survey

... transects, as a group, span all clinoform facies of the Kf-1-Iv[a] bedset (figure 8-5). A large percentage of the rock tested apparently has...

2001

Abstract: Migration Velocity Analysis of Incomplete Data Using LSPSM CIGs; #90174 (2014)

Abdolnaser Yousefzadeh, John C. Bancroft, and Gary F. Margrave

Search and Discovery.com

...he method to the LSPSM CIGs. Different types of CIG can be used for velocity analysis (Biondi, 2007). Our focus is on the shot domain CIGs...

2014

Imprints In Silica Grains Induced During An Open-Channel Flow Experiment: Determination of Microtextural Signatures During Aqueous Transport

Pedro J.M. Costa, Yong Sung Park, Young Do Kim, Maria Quintela, William C. Mahaney, Francisco Dourado, Sue Dawson

Journal of Sedimentary Research (SEPM)

..., particularly in provenance studies. Work by Mahaney (2002), commonly used as a microtexture atlas, characterizes a group of forty-one different microtextural...

2017

Transportation of Sediment by Bubbles

Henry W. Menard

Journal of Sedimentary Research (SEPM)

... the velocity at which any grain hits the water is equal to the vector sum of the terminal settling velocity and the instantaneous wind velocity. Since...

1950

Abstract: P-wave and S-wave Near-surface Characterization in Northeast British Columbia (NEBC); #90174 (2014)

Liliana M. Zuleta and Don C. Lawton

Search and Discovery.com

... the traveltime from the surface to the refractor while the refractor velocity is estimated from the minus times. The plus-time (T+D) is defined as the sum...

2014

Abstract: Revisiting the S-wave Splitting Anisotropic Characterization Workflow: An ApproachBased on the Splitting Intensity Analysis and Inversion; #91204 (2023)

Daniele Boiero, Claudio Bagaini

Search and Discovery.com

... Intensity Analysis and Inversion Daniele Boiero, Claudio Bagaini Schlumberger Abstract Introduction In azimuthally anisotropic media, S-waves...

2023

Oceanography of Mississippi Delta Sedimentary Environments

P. C. Scruton

AAPG Bulletin

... stability downstream from the distributary mouth is caused by mixing that is partly due to friction between layers of different velocity and partly due...

1956

From geophone arrays to point receivers: Implications for sensor and land survey design

Nicolas Goujon, Tom O’Toole

International Meeting for Applied Geoscience and Energy (IMAGE)

...). Burying nodes to a depth of 10–20 cm provides at least −3 dB of wind noise attenuation. A buried group of 4 single-sensor nodes can therefore have...

2024

Imaging the presalt with elastic FWI using OBN data

Gabriel Brando, Benjamin Huard, Luis Cypriano

International Meeting for Applied Geoscience and Energy (IMAGE)

... component image (sum of horizontal derivatives of the velocity field), respectively. Both depict shallow fault patterns, but some small circular...

2023

Phase-encoded waveform inversion for multiples

Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng

International Meeting for Applied Geoscience and Energy (IMAGE)

..., University of Houston Summary Full-waveform inversion (FWI) can inherently handle all wave types, including turning waves, and primary and multiple...

2022

Abstract: Automatic Time Picking and Velocity Determination on Full-Waveform Sonic Logs; #90171 (2013)

Lejia Han, Joe Wong, John C. Bancroft, and Robert R. Stewart

Search and Discovery.com

...Abstract: Automatic Time Picking and Velocity Determination on Full-Waveform Sonic Logs; #90171 (2013) Lejia Han, Joe Wong, John C. Bancroft...

2013

Abstract: The Benefits of S-waves and Multicomponent Data for Surface Monitoring; #90187 (2014)

en Dando, Kit Chambers, Raquel Velasco, and Stephen Wilson

Search and Discovery.com

...Abstract: The Benefits of S-waves and Multicomponent Data for Surface Monitoring; #90187 (2014) en Dando, Kit Chambers, Raquel Velasco, and Stephen...

2014

Seismic geomorphology reveals the depositional environment to enhance reservoir prediction at various scales: Case studies from exploration to development projects in Argentina

Teresa Santana, Daniel Sanchez, Alejandra Feinstein

International Meeting for Applied Geoscience and Energy (IMAGE)

... is composed by the sum of signals of different frequencies. Spectral decomposition consists in analyzing and decomposing a seismic signal into its...

2022

Hummocky Cross-Stratification and Megaripples: A Geological Double Standard?

Donald J. P. Swift, Albert G. Figueiredo Jr., G. L. Freeland, G. F. Oertel

Journal of Sedimentary Research (SEPM)

...). The flow regime that builds hummocky megaripples also has "transitional" characteristics but for somewhat different reasons. Velocity is lower...

1983

Defining a Steeply-Dipping Salt Flank in Mississippi with a New High-Certainty 3D Method

Nicholas Brooks, Pat Donais, Werner Heigl, Jakob Haldorsen, Fred Li

GCAGS Transactions

... acquisition. Salt-Imaging VSP A surface source, such as airgun or vibrator in this case, generates seismic waves that propagate in all directions. We...

2015

Regional detection and monitoring of injection-induced seismicity: Application to the 2010–2012 Youngstown, Ohio, seismic sequence

S. G. Holtkamp, M. R. Brudzinski, and B. S. Currie

AAPG Bulletin

...: Surface waves, receiver functions, and crustal structure: St. Louis, Missouri, St. Louis University, 110 p. Hitzman, M., D. Clarke, E. Detournay, J...

2015

A Test for the Significance of Lithological Variations

Churchill Eisenhart

Journal of Sedimentary Research (SEPM)

.... In the second place, if two or more samples have been taken from parent deposits which are known to be different, then the samples ought to show significant...

1935

Seismic Array Response in the Presence of Intra-Array Variations in Element Weights, Elevations, and Positions; #42328 (2018)

Ryan Adhi Putra, Abdullatif A. Al-Shuhail

Search and Discovery.com

... ratio (S/N) by attenuating the undesired horizontally traveling surface waves such as ground roll. The combined effects with variations of element...

2018

A Simple Universal Equation for Grain Settling Velocity

R.I. Ferguson, M. Church

Journal of Sedimentary Research (SEPM)

...A Simple Universal Equation for Grain Settling Velocity R.I. Ferguson, M. Church 2004 933 937 Vol. 74 (2004) No. 6. (November) A new equation...

2004

Simultaneous Joint Inversion of Seismic and Gravity Data for Long Offset Pre-Stack Depth Migration in Northern Oman, #41569 (2015).

D. Colombo, M. Mantovani, M. De Stefano, D. Garrad, Hussain Al Lawati

Search and Discovery.com

... are, respectively, models of two different domains (e.g. seismic velocity and density or seismic velocity and resistivity). The objective function for Joint...

2015

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