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The AAPG/Datapages Combined Publications Database

Showing 3,800 Results. Searched 195,354 documents.

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Effects of Storage Before Analyzing Suspended Sediment Samples from Lakes, Rivers, and Estuaries: RESEARCH METHOD PAPER

J. McManus, R. W. Duck, A. H. A. Alrasoul, J. D. Thomas

Journal of Sedimentary Research (SEPM)

...Effects of Storage Before Analyzing Suspended Sediment Samples from Lakes, Rivers, and Estuaries: RESEARCH METHOD PAPER J. McManus, R. W. Duck, A. H...

1985

Tectonic geomorphological investigations of antiforms using differential geometry: Permam anticline, northern Iraq

Annegret Burtscher, Marcel Frehner, Bernhard Grasemann

AAPG Bulletin

... analysis investigates in detail the effects of two adaptable parameters: the cutoff wavelength of the low-pass filter that is applied to the DEM...

2012

Use of Airplane Photographs in Geologic Mapping

Walter A. English

AAPG Bulletin

... work. These were developed during the war, and their use with very little modification has been continued. A filter was originally used to End_Page...

1930

Salinities of Interstitial Waters from Selected Sediments in the Gulf of Mexico: NOTES

Paul J. Cernock, William R. Bryant

Journal of Sedimentary Research (SEPM)

... filter press. The method employed was similar to that described by Siever (1962). The Fann filter press consists of a cylindrical cell sample assembly...

1969

Abstract: Seismic Data Decomposition into Spectral Components Using Regularized Nonstationary Autoregression; #90187 (2014)

Sergey Fomel

Search and Discovery.com

.... A fundamental characteristic of seismic data is non-stationarity. In 1-D (time dimension), seismic data are nonstationary because of wave-attenuation effects...

2014

Sediment Control of Faunal Distribution Patterns in Late Cretaceous Marginal Marine Deposits of South Dakota: ABSTRACT

Donald C. Rhoads, Karl M. Waage

AAPG Bulletin

... content and suspended easily by weak bottom currents. High interface turbidity and instability may explain the low diversity of filter feeders from...

1969

Evidence For and Against Sea-Level Changes From the Stable Isotopic Record of the Cenozoic

Douglas F. Williams

Special Publications of SEPM

..., and the 18O/16O ratio of sea water. The effects of temperature on the global 818O record of the Cenozoic can be reduced, but not eliminated, by utilizing benthic...

1988

An Advanced Interpretation Technique Integrates Well Log and Core Data for Thin-Bed Reservoir Evaluation

Ashok Sinha , Tony Lawrence , Bill Simmons

GCAGS Transactions

... with conventional thin-bed well logging and data analyses. Improved data acquisition methods record filter-free data at higher sample rates. Advanced log...

1989

Algorithm Comparison with Cross Sections: Appendix A

David E. Hamilton, Thomas A. Jones

AAPG Special Volumes

... and biharmonic filter. The dataset consists of points evenly spaced along north-south lines. Points along a line have the same value but the value changes...

1992

Geological and Structural Interpretation of Ado-Ekiti Southwest and its Adjoining Areas Using Aeromagnetic Data; #30407 (2015)

Ayodeji Jayeoba and Dare Odumade

Search and Discovery.com

... depending on specific filter design. Low-pass Butterworth filter was applied to the total magnetic intensity data to remove regional effects. An ideal...

2015

Amplitude Mapping of Reservoirs in North Africa

Search and Discovery.com

... available coupled with the newer VSP technology has given excellent results in addressing this problem. The basic “match filter” or “transfer function...

2013

Abstract: Application of Acoustic Waveform Tomography to Marine Seismic Reflection Data Contaminated with Strong Guided Waves; #90187 (2014)

Rajesh Vayavur and Andrew. J. Calvert

Search and Discovery.com

... is 25m. A raw shot gather with minimum phase low-pass filter (0-0-15-20Hz) from the section is shown in Figure1. First arrivals are partly obscured...

2014

Geophysical Data for Geologic Study

R. C. Dunlap, Jr.

AAPG Bulletin

... or unmixed, with either one filter setting or another, and with a single gain control characteristic. The choices had to be made in advance of shooting...

1956

Overview of Exploration Geophysics: Recent Breakthroughs and Challenging New Problems: Hydrocarbons

B. S. Flowers

AAPG Special Volumes

...) stacking is a velocity filter that causes attenuation of multiple reflections and other noises. In an example chosen from the eastern Pacific offshore...

1976

Overview of Exploration Geophysics--Recent Breakthroughs and Challenging New Problems

B. S. Flowers

AAPG Bulletin

... Silurian reef anomaly (a) and fictitious Silurian anomaly (b). Top panels show effects of misalignments due to variations in near-surface glacial till...

1976

Phase Unwrapping: A Review of Methods and a Novel Technique

Sam T. Kaplan

Search and Discovery.com

... that falls on the unit circle causes a S discontinuity. Algorithms that rely on the continuity of phase may mistakenly attribute the effects of sharp...

Unknown

Phase Unwrapping: A Review of Methods and a Novel Technique

Sam T. Kaplan

Search and Discovery.com

... that falls on the unit circle causes a S discontinuity. Algorithms that rely on the continuity of phase may mistakenly attribute the effects of sharp...

Unknown

Application of Illumination Compensation to Irregular Surface Areas Imaging; #40773 (2011)

Yueming Ye and Ru-shan Wu

Search and Discovery.com

..., the corresponding seismic data are added if receivers or sources exist. In addition, a filter was introduced to eliminate the migration noise in the fictitious...

2011

Ground Roll Removal and Signal Preservation by Cascading SVD Polarization Filters with Localized Fk-Filters; #41543 (2015)

Kristof De Meersman, Chris Ansorger

Search and Discovery.com

... of a 2D 3C line. The flow excludes any form of adaptive amplitude scaling and aims to preserve true signal amplitudes. The polarization filter...

2015

Continuous Sea-Floor Spreading in Red Sea: An Alternative Interpretation of Magnetic Anomaly Pattern

J. L. Labrecque , N. Zitellini

AAPG Bulletin

... to the present by using a time-varying process filter. The half spreading rate is approximately 1 cm/yr (0.4 in./yr) since initial rifting. The parameters...

1985

Lateral Changes in Seismic Velocities and Their Effect on Depth Prediction

J. Pinchin, M. Bayly

Petroleum Exploration Society of Australia (PESA)

... data. J ANALYSIS -- - - -- ·-···· OUTPUT VELOCITY W ITH RESIDUAL STATICS APPLIED -· ·OUTPUT VELOCITY WITH 975 m. SMOOTHING FILTER 130 Figure 9...

1989

Sedimentation Caused by a Tube-Building Amphipod: NOTES

M. P. Lynch, W. Harrison

Journal of Sedimentary Research (SEPM)

..., The effects of the deposit feeding polychaete Pectinaria gouldii on the intertidal sediments of Barnstable Harbor: Limnol. Oceanog., v. 11, p. 327-332...

1970

Delineation of a Produced Water Plume in Pointe Coupee Parish, Louisiana

Matthew C. Smith, Jeffrey A. Nunn

GCAGS Transactions

... site were processed using Sensors and Software Ekko_View and Ekko_View Deluxe software. A DEWOW filter was automatically applied to the data during...

2010

Methodology for Enhancing and Evaluating Geologic Effects of Time Series Models: A Case of Ground Response in Santa Clara Valley, California, #41097 (2012)

Olusola Samuel-Ojo, Lorne Olfman, Linda A. Reinen, Arjuna Flenner, David D. Oglesby, Gareth J. Funning

Search and Discovery.com

...Methodology for Enhancing and Evaluating Geologic Effects of Time Series Models: A Case of Ground Response in Santa Clara Valley, California, #41097...

2012

Low Power Magnification Photography of Thin Sections: NOTES

S. Duncan Heron, Jr.

Journal of Sedimentary Research (SEPM)

... Ektachrome Infrared Aero Film, type 8443. A dark red filter must be inserted immediately in front of the lens (a yellow filter is acceptable with Ektachrome...

1968

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