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The AAPG/Datapages Combined Publications Database

Showing 8,923 Results. Searched 200,673 documents.

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Detection of Seismic Phases from a Major Earthquake on a Local Seismogram

Che Noorliza Lat

Geological Society of Malaysia (GSM)

... across the world if the energy released is sufficient to transmit the signal (Bolt, 1982). This paper is a descriptive seismological exercise to see...

2002

Abstract: Curvelet Denoising: Application to Crustal Reflection Data; #90171 (2013)

Jounada Oueity, Vishal Kumar, Ron Clowes and Felix Herrmann

Search and Discovery.com

... Columbia, Vancouver, BC, Canada V6T 1Z4 Summary The separation of signal and noise is a key issue in seismic data processing. By noise, we refer...

2013

Abstract: Efficient Broadband Marine Acquisition and Processing for Improved Resolution and Deep Imaging; #90172 (2014)

Ed Kragh, Tim Brice, Tony Curtis, Josef Heim, Deepak Kapadia, Morten Svendsen

Search and Discovery.com

... as fewer streamers are required. The data are combined in processing, optimizing the signal-to-noise ratio over the entire bandwidth. The resulting data...

2014

Abstract: An Experiment to Detect Nonlinear Seismic Responses on Exploration/Monitoring Scale; #90187 (2014)

Kris Innanen, Gary Margrave, and Malcolm Bertram

Search and Discovery.com

... to detection: the fact that the vibrators are adaptive, and therefore, in effect, could impose an apparent degree of nonlinearity on the signal. We do...

2014

Abstracts: Accurate Declipping Hybrid Algorithm for Ground Penetrating Radar Data; #90173 (2015)

Akshay Gulati and R. J. Ferguson

Search and Discovery.com

... is not representing the true peak amplitude of the returning signal. Generally adopted methodology under these circumstances is trace normalization. In trace...

2015

Long Period Long Duration Seismic Events During Hydraulic Stimulation of a Shale Gas Reservoir, #40761 (2011)

Indrajit Das, Mark D. Zoback,

Search and Discovery.com

... s Identifying LPLD events: 1) Band-pass filtering method Axial Transverse 1 Transverse 2 Original Signal 60 seconds 60 seconds 60 seconds 60...

2011

Appendix III: High-Sensitivity Aeromagnetic Analysis

William C. Pearson

Rocky Mountain Association of Geologists

... that has been filtered with a second-vertical derivative (SVD) operator. The SVD filter dampens the low-frequency signal (believed to be sourced from...

2015

Marine Statics

Chiem Boon Hong

Geological Society of Malaysia (GSM)

.... As a simple illustration, Fig.lA shows schematically a shotpoint fired at position S and the reflected signal being recorded by receivers RI, R2...

1987

Broadband Seismic Technology and Beyond: PART X: IsoMetrix … Isometric Sampling

Lasse Amundsen, Martin Landrø

GEO ExPro Magazine

... sampler. The same thing happens in seismic data acquisition between the spatial sampler and the spatial signal (or wavefield) being sampled. Sampling...

2014

Different Approaches of Combining Geophone and Hydrophone Data From OBC Seismic at Bintuni-Berau Bay, Papua

Tepy Septyana, Yayat Supriatna, Supriyono, Greg Schurter, James Keggin, Jean-Jacques Chameau

Indonesian Petroleum Association

...). Since the highest signal to noise ratio is generally achieved by CMP stacking, the post stack domain was suggested as the optimal stage for PZ...

2010

Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique

Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu

Unconventional Resources Technology Conference (URTEC)

... inversion. URTeC 2153634 2 (a) (b) (c) Figure1 The problems on pre-stack gathers (a)Non-continuous events and low signal-to-noise ratio caused...

2015

Geology and Exploration of the Permo-Triassic Sediments in Dagestan

G. G. Gusanguseynov, F. G. Sharafutdinov, M. O. Dzhabrailov, G. P. Sapronov

Petroleum Geology: A Digest of Russian Literature

... on the Permo-Triassic and outlined a structure on the T reflector bounded by a zone of loss of signal. See Fig. 1a. Figure 1. Variants of structural maps...

1979

Hydrodynamic Investigations of Wells in Exploration for Fault Traps

L. A. Kuklich

Petroleum Geology: A Digest of Russian Literature

... the signal-input well to the receiver well and by the variation in formation pressure in them. The impulse (or series of impulses) of the elastic wave...

1980

Discussion of "Quartz Grain Orientations (The Photometric Method)"

Peter C. Trescott

Journal of Sedimentary Research (SEPM)

..., resulting in a spurious signal (noise) unrelated to the optical orientation of the quartz grains. With crossed nicols, this noise is added to the signal...

1972

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