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The AAPG/Datapages Combined Publications Database

Showing 22,173 Results. Searched 189,922 documents.

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Emphasizing Vibrations

Paul Wood

GEO ExPro Magazine

... GEO ExPro DECEMBER 2011 able to record very low frequencies from broad bandwidth explosions. But surveys using drilled explosives are relatively...

2011

Muricid drilling predation at high latitudes: Insights from the southernmost Atlantic

Julieta C. Martinelli, Sandra Gordillo, Fernando Archuby

PALAIOS

... the abundance of the Naticidae and the Muricidae in our samples, muricids are clearly dominant in Patagonian shallow marine habitats. A recent review...

2013

Broad bandwidths reveal double the expected sediment depth in the Northern Carnarvon Basin

Jo Firth, Mark Stanley

Petroleum Exploration Society of Australia (PESA)

..., resulting in a fourfold loss of energy and an approximate 10-Hz dominant frequency shift towards the low frequencies. This makes the recording of good...

2016

Marine Seismic Sources: Part I: Air-Guns for Non Experts

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

...Marine Seismic Sources: Part I: Air-Guns for Non Experts Lasse Amundsen, Martin Landrø recent advances in technology Marine Seismic Sources part i...

2010

Broadband Seismic Technology and Beyond: Part I: The Drive for Better Bandwidth and Resolution

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... time). In seismic exploration broadband refers to a wider band of frequencies being recorded than in conventional seismic exploration. In the marine...

2013

Abstract: Hurrah for Hussah! Analysis of Stacked Data from a Low-frequency Seismic Data Acquisition Experiment at Hussar, Alberta; #90174 (2014)

J. Helen Isaac and Gary F. Margrave

Search and Discovery.com

..., unfiltered data show a dominant signal band that extends from about 10 Hz to 40 Hz for all sources and receivers, and up to near 60 Hz...

2014

Broadband Seismic Technology and Beyond: Part IX: BroadSeis in Production

Lasse Amundsen, Martin Landrø, Vetle Vinje, Jo Firth

GEO ExPro Magazine

.... Combining this acquisition CGG Data Library This colour blend 3D visualisation of 2.5 Hz, 8 Hz and 15 Hz dominant frequencies, taken from data...

2014

Late Pleistocene Sedimentation and Meltwater Influx in the Central Gulf of Mexico: Foraminiferal Signals

Megan H. Jones, Barun K. Sen Gupta

GCAGS Transactions

... sources and/or transport mechanisms. Two salinity-sensitive species, Globigernoides ruber, a commonly used faunal indicator of the meltwater spike...

1996

Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

... be represented by the sum of a series of sinusoid surfaces of various frequencies, amplitudes, phases, and orientations--the larger undulations...

1969

High - Quality, Efficient Broadband Acquisition & Processing-An Integrated Approach

Richard Patenall, Dominic Fell, Timothy Brice, Saeeda Hydal

Indonesian Petroleum Association

... high-quality seismic data with a high signal-to-noise ratio To generate broadband data with enhanced high frequencies for temporal resolution...

2014

How to Reconcile Security and Safety Issues with Seismic Quality in Obstructed and Populated Areas: Case Study Handil 3D Seismic

Aa Pian Nopiana, Michel Erbetta, Alain Etchemendy, Christophe Paulet, John Conant, Stephan Ruhlmann, Alain Carnemolla, Ganda M. Simangunsong

Indonesian Petroleum Association

...% of the project area ( 14. 729 shots) Airgun based sources using 8 GI guns (150 cubic inch each) in deeper shallow waters (> 5m) and marine areas, i.e. 15...

2012

Data Enhancement from a 486-Channel Streamer

Bill Dragoset, Ken Larner

Pacific Section of AAPG

... Technology Conference (Paper No. 2833), Houston, Texas. Siems, L., 1980, Digital marine seismic telemetry system: Offshore Technology Conference (Paper...

1980

A Towed Streamer EM System Performance Case Study

Folke Engelmark, Allan McKay, Johan Mattsson

Indonesian Petroleum Association

...% and for the phase 3%. The dominant part of the uncertainty is coming from the electric field noise for the low frequencies and long offsets. The measurement...

2013

ENCOUNTER FREQUENCY DOES NOT PREDICT PREDATION FREQUENCY IN TROPICAL DEAD-SHELL ASSEMBLAGES

JULIETA C. MARTINELLI, MATTHEW A. KOSNIK, JOSHUA S. MADIN

PALAIOS

..., predation frequencies are high for tropical marine snails that are preyed upon by crabs (Zipser and Vermeij 1978) and paleontological studies have also...

2015

Vibroseis and Dynamite Comparison as Seismic Energy Source in North Sumatra

M. E. Gregg, B. E. Mackenzie, A. Patria

Indonesian Petroleum Association

... (Figure 3) was lower in amplitude, and dominant frequencies were higher due to the bandpass filter effect of Vibroseis. Thus, the ability to limit sweep...

1991

Application of Inverse-Q Filter and Deconvolution to Improve Seismic Data Quality in the Deep Section

Deddy F. Djanawir, Frans Langitan

Indonesian Petroleum Association

... attenuation is one of the main sources of non-stationarity in recorded seismic data. The dominant frequency in a seismogram decreases with time (Lindseth, 1982...

2004

Distribution and Ecology of Foraminifera from East Mississippi Delta Margin

Robert R. Lankford

AAPG Bulletin

... been found living in low frequencies in the sound and more rarely in deltaic marine fauna. Ammoscalaria pseudospiralis (Williamson) (Pl. 1, Figs...

1959

The use of spectral recomposition in tailored forward seismic modeling of outcrop analogs

Mark Tomasso, Renaud Bouroullec, David R. Pyles

AAPG Bulletin

... single-peak frequency Ricker wavelets, in which the frequencies of these wavelets may, or may not, be chosen to relate to the dominant frequency...

2009

Detection of Fluvial Systems Using Spectral Decomposition (Continuous Wavelet Transformation) and Seismic Multi-Attribute Analysis … A New Potential Stratigraphic Trap in the Carbonera Formation, Llanos Foothills, Colombia; #42281 (2018)

Essam Saeid, James Kellogg, Christopher Kendall, Ibraheem Hafiz, Zyaid Albesher

Search and Discovery.com

... seismic cube. The frequency spectra for the Carbonera Formation include the following dominant frequencies: 18-21, 25-33, and 38-41 Hz (Figure 4...

2018

Inferring Stratigraphy from Seismic Data

R. E. Sheriff

AAPG Bulletin

... be improved (1) by using sources rich in high frequencies and (2) by not discriminating against high frequencies in recording. However, the sources richest...

1976

Statistical Time-Series Analysis and Sedimentological Tuning of Bedding Rhythms in a Triassic Basinal Succession (Southern Alps, Italy)

Florian Maurer, Linda Hinnov, Wolfgang Schlager

Special Publications of SEPM

... of facies, sediment sources, and transport mechanisms formed the basis of the statistical analysis of bedding rhythms that are based on a grayscale...

2004

Abstract: Analysis of the Low Frequency Content of Seismic Data Acquired During an Experiment at Hussar, Alberta, Canada; #90187 (2014)

J. Helen Isaac, Gary F. Margrave, Monika Deviat, and Pam Nagarajappa

Search and Discovery.com

... the data show good coherency at the lowest frequencies of 1-5 Hz. Effective noise attenuation appears to be the greatest factor in attaining high coherency...

2014

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