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The AAPG/Datapages Combined Publications Database
Showing 2,589 Results. Searched 200,636 documents.
Geological significance of seismic reflections and imaging of the reservoir architecture in the Malampaya gas field (Philippines)
Franois Fournier, Jean Borgomano
AAPG Bulletin
... depth-migrated data, with a zero-phase signal. The seismic polarity is defined as follows: Negative amplitude means a downward increase in acoustic...
2007
Salt-driven evolution of a gas hydrate reservoir in Green Canyon, Gulf of Mexico
Alexey Portnov, Ann E. Cook, Mahdi Heidari, Derek E. Sawyer, Manasij Santra, and Maria Nikolinakou
AAPG Bulletin
... observed coincident with the base of GHSZ as a high-amplitude negative impedance contrast with reversed polarity from the water bottom reflector (Haacke et...
2020
Documenting the geometry and magnitude of shortening at the Allegheny Front: Lycoming County, Pennsylvania, United States
Ashley Ace, Nadine McQuarrie, Peter B. Sak, Robert Grundy, and Barrett Lavergne
AAPG Bulletin
... map for location). Polarity is shown on the figures (red is negative, blue is positive). (B) Interpretation overlain on the reflection profile as seen...
2020
Seismic sedimentology of a broad, low-relief carbonate platform: The Cambrian Longwangmiao Formation, Moxi–Gaoshiti area, Sichuan Basin, China
Wenzhi Zhao, Hongliu Zeng, Zhaohui Xu, Suyun Hu, and Qilong Fu
AAPG Bulletin
... traces are clear. Major seismic stratigraphic reference horizons are relatively strong amplitude events (positive polarity peaks and negative polarity...
2024
Shallow Water Flows in Gulf of Mexico, Relating High Sedimentation Rates to Proglacial Lake Source and Mass Transport Deposits in Deepwater Sink; #30615 (2019)
Thomas Bjerstedt, Kody Kramer
Search and Discovery.com
...). The lake was no younger than 780 Ka because the Minford Clay is entirely reversed polarity (white); end of Matuyama Chron (Sagnotti et al., 2014...
2019
Tectonic Evolution of Sundaland: A Phanerozoic Synthesis
Charles S. Hutchison
Geological Society of Malaysia (GSM)
... the polarity of the igneous arcs when there is an absence of outcrops of an ophiolitic suite to indicate the actual trench position. LOWER PALAEOZOIC...
1973
NATS on WATS seismic imaging, rock property modeling and interpretation using machine-learning techniques to inform reservoir quality and deliverability in the Gulf of Mexico
Peter Lanzarone, Shenghui Li, Kang Fu, Kenny Gullette, Jeff Thompson, Gabriel Ritter
International Meeting for Applied Geoscience and Energy (IMAGE)
... characterization target logs for our prediction. The analysis consisted of training the PNN using 4 attributes (apparent polarity of intercept, integrated...
2022
Global Tectonic History of the Western Cordillera
Kenneth L. Russell
Earth Science Bulletin (WGA)
... mapped in all oceanic basins. They suggested that variations in the intensity and polarity of the earth’s magnetic field were preserved as the new...
1972
Models for Carbonate Stratigraphy from Miocene Reef Complexes of Mediterranean Regions: Introduction
Evan K. Franseen, Mateu Esteban, William C. Ward and Jean-Marie Rouchy
Special Publications of SEPM
... polarity timescale for the Late Cretaceous and Cenozoic: Journal Geophysical Research, v. 100, p. 6093-6096. u, 0 m,I- 2 Z - w 0 O 0 12-- NP...
1996
Glaciation in Alaska: Introduction and Overview
Thomas D. Hamilton, Katherine M. Reed, Robert M. Thorson
Alaska Geological Society
... by international agreement. The early and middle Pleistocene are separated by the Matuyama-Bruhnes magnetic polarity reversal, which has been assigned...
1986
Balcones Volcanoes in South Texas: Exploration Methods and Examples
Thomas E. Ewing
South Texas Geological Society Special Publications
..., of the volcanoes have a magnetic expression. However, if remanent magnetization is significant and polarity reversals occurred (as present knowledge indicates...
1986
Mid Cretaceous Source Rock Enigma
Rasoul Sourkhabi
GEO ExPro Magazine
... which the magnetic field retained its normal polarity and was not reversed. Moreover, they noted, this event coincided with extensive sea-floor...
2009
Pair beads seismic anomalies: The cave features important to but missed in carbonate studies
Fangjian Xue
International Meeting for Applied Geoscience and Energy (IMAGE)
... in amplitude and geometry. For effective understanding, standard references have been established with seismic display of American zero-phase polarity...
2022
Marine Seismic Sources: Part I: Air-Guns for Non Experts
Lasse Amundsen, Martin Landrø
GEO ExPro Magazine
... with opposite polarity. This source ghost pulse is delayed in time with respect to the initial downwards primary pulse from the source. Geometrically...
2010
Highlights of 3D Surveys, Offshore Sarawak
H. J. E. Schmidt
Southeast Asia Petroleum Exploration Society (SEAPEX)
...) below a shallow unconformity is given in Fig. 13 (at approx. 0.2–0.23 seconds). These indications are expressed as a “polarity reversal” (a black loop...
1988
Aiding self-supervised coherent noise suppression by the introduction of signal segmentation using blind-spot networks
Sixiu Liu, Claire Birnie, Tariq Alkhalifah, Andrey Bakulin
International Meeting for Applied Geoscience and Energy (IMAGE)
... shots are generated. These are increased four-fold by applying the standard data augmentation techniques of mirroring and polarity reversal. Ten noisy...
2022
Results of a Vibroseis Sourced 3D Seismic Survey, Phetchabun Basin, Thailand
David Remus, Rex Prosser
Southeast Asia Petroleum Exploration Society (SEAPEX)
... acquires seismic data in a one bit digital format, rather than the more traditional 16 bit format. The data recorded represents the polarity or sign...
1992
STRATIGRAPHY OF THE DRIFT- FACIES ROCKS OF THE TALLADEGA BELT, ALABAMA APPALACHIANS
James F. Tull, Lance W. Johnson
Alabama Geological Society
... to the northeast had the geometry of the opposite polarity, that of a lower plate (distal) margin. In this interpretation, no rift-facies rocks formed...
1997
Amplitude Recovery of Digitally Recorded Data
Roy O. Lindseth
Pacific Section of AAPG
... of the input is replaced on the output by the wavelet of the unit impulse response, (Figure 3) scaled in proportion to the amplitude and polarity...
1972
Depositional Sequences and Facies in the Torok Formation, National Petroleum Reserve Alaska (NPRA)
David W. Houseknecht, Christopher J. Schenk
Special Publications of SEPM
... velocity control. We estimate that the signifies a regional reversal in polarity of sediment dispersal that represents the tectonic transition from...
2001
Structural characterization and rupture hazard assessment of faults in the Midland Basin, west Texas
Elizabeth Horne, Peter Hennings, Katie Smye, Amanda Calle, Dino Huang, Alexandros Savvaidis
International Meeting for Applied Geoscience and Energy (IMAGE)
..., the vergence directions of these contractile faults and fault-propagation folds change polarity across WNWESE and WSW-ENE fault zones and many of the NNW...
2022
Effectiveness of dip-in DAS observations for low-frequency strain and microseismic analysis: The CanDiD experiment
David W. Eaton, Yuanyuan Ma, Chaoyi Wang, Kelly MacDougall
International Meeting for Applied Geoscience and Energy (IMAGE)
... begin to close as expressed by a polarity reversal from extension (red) to compression (blue). Changes in fracture azimuths were also observed, which...
2022
Sedimentation and Hiatuses in the Central Pacific Basin: Their Relationship to Manganese Nodule Formation
Akira Nishimura
Circum Pacific Council Publications
... manganese- HIATUSES Figure 5. Core samples on the topographic map of the GH81-4 area. The left columns show magnetic polarity of sediments...
1992
Least-squares reverse time migration of seismic source coding based on Shearlet transform
Yingkaer Nabi, Xiangbo Gong, Zhuo Xu
International Meeting for Applied Geoscience and Energy (IMAGE)
... crosstalk noise, Schuster (2011) proposed a dynamic coding strategy of randomly varying the polarity of the source and excitation delay during LSM...
2022
Phase-encoded waveform inversion for multiples
Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng
International Meeting for Applied Geoscience and Energy (IMAGE)
... and a variance of 𝜎 2 , denoted in shorthand as: 𝜏 𝑘 ~𝑁(0, 𝜎 2 ) . (8) Another random variable in equation 7 is the polarity, 𝑝 𝑘 =±1, which...
2022