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The AAPG/Datapages Combined Publications Database
Showing 11,091 Results. Searched 200,357 documents.
Basic Seismic Processing: Part 7. Geophysical Methods
Peter M. Duncan
AAPG Special Volumes
... and receiver location and the near surface velocity must be known to make these corrections. An elevation datum is chosen, and the distance above or below...
1992
Problems in Reflection Seismology
G. H. Westby
Tulsa Geological Society
... methods of calculation a chart using variation of velocity with depth was used and the elevation of the base of the weathering layer subtracted to secure...
1934
Abstract: Near Surface Anomalies and Solutions; #90211 (2015)
Todd Mojesky, David LeMeur, and Ali Karagul
Search and Discovery.com
...Abstract: Near Surface Anomalies and Solutions; #90211 (2015) Todd Mojesky, David LeMeur, and Ali Karagul Datapages/Search and Discovery Article...
2015
High Resolution “Vibroseis” Data – Compressional and Shear-Wave Modes
D. E. Miller, D. E. Dunster
Pacific Section of AAPG
... Composite) and Surface Elevation Figure 6. North-South P Wave Reflection Line (4/1 Composite) Corrected for Elevation and Weathering Figure 7. North...
1972
Seismic Data-Processing Techniques in Exploration for Reefs, Northern Michigan
P. L. McClintock
AAPG Special Volumes
...------------------------ the signal-to-noise ratio of the final section. Additionally, corrections for variations of elevation were computed and applied to the data...
1977
ABSTRACT: Seismic Exploration Pitfalls in Northeastern United States, by James R. Morris; #91023 (1989)
Search and Discovery.com
1989
Some Applications and Problems of the Seismic Refraction Technique in Civil Engineering Projects in Malaysia
B. K. Lim, S. J. Jones
Geological Society of Malaysia (GSM)
.... In shallow refraction work, some of the common difficulties encountered in the interpretation are due to the near-surface inhomogeneities' and variations...
1982
Corrected Record Sections
Ernest M. Hall Jr.
CSPG Special Publications
... moveout. The weathering and elevation or “static” corrections are constant for a given trace throughout the length of the record. The normal moveout...
1957
3D large residual static corrections based on first breaks in CMP gather
Feng Faquan, Deng Zhiwen, Cai Xiwei, Hu Chaojun, Huang Yuanyi, Zou Xuefeng, Du Zhongdong, Wang Haili, Wang Mingliang
International Meeting for Applied Geoscience and Energy (IMAGE)
... of all CMP gathers. After datum statics, the statics eliminates the influence of the near-surface weathering zone on the seismic reflection traveltime...
2022
Gravity Survey of the Northern Channel Islands
J. D. Rietman, J. K. Aldrich
Pacific Section of AAPG
... based on measured values, estimated lithologic variations, near-surface weathering effects, and the effects of compaction. Except for the volcanics...
1969
Abstract: To TTI or not to TTI? Semi-Automated 3D Tomographic Velocity Analysis in the Canadian Foothills: A Case History; #90211 (2015)
Sylvestre Charles, David Mitchell, Rob Holt, Jiwu Lin, and John Mathewson
Search and Discovery.com
... using different near surface weathering static calculations and different velocity model building strategies are compared. In the first processing, we...
2015
Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chemery, Paris Basin, France
Paola Sala, Marcel Frehner, Nicola Tisato, O. Adrian Pfiffner
AAPG Bulletin
...Building a three-dimensional near-surface geologic and petrophysical model based on borehole data: A case study from Chemery, Paris Basin, France...
2013
Evaluating HD weathering surveys and surface seismic with DAS in a sand dune environment
Andrey Bakulin, Ezzedeen Alfataierge, Roman Pevzner
International Meeting for Applied Geoscience and Energy (IMAGE)
... conduct a focused field trial to assess both High-Definition (HD) weathering surveys for near surface and surface seismic with DAS. Since conventional...
2022
A Novel Method of Deriving Weathering Statics from First Arrival Refractions
G. W. Hollingshead, R. R. Slater
Pacific Section of AAPG
... reflection shot records, together with an integrated technique for their reduction to surface consistent weathering statics. The method is an adaptation...
1980
Jasper Area Alberta, a Source of the Foothills Erratics Train1
E. W. Mountjoy
CSPG Bulletin
... not be transported on or near the surface of a glacier (see Stalker. 1956. p. 15), and will not be considered further. Above the Jasper Series and Hector...
1958
Subsurface Geology of the Kuala Lumpur Limestone
Lim Tow Ho
Geological Society of Malaysia (GSM)
..., Penang. Subsurface geology The subsurface geology of the Kuala Lumpur ,Limestone means geology near the surface. The geological information was extracted...
1989
Some Thoughts on the Crustal Structure of Peninsular MalaysiaResults of a Gravity Traverse
Patrick J. C. Ryall
Geological Society of Malaysia (GSM)
... metamorphosed Palaeozoic rocks on each flank. The maximum may be caused by either near-surface dense igneous rocks associated with the Kampong Awah andesitic...
1982
How to Make Velocity Corrections
John W. Daly
AAPG Bulletin
... to travel from a near-by surface point to the geophone has proved to be the best way of determining velocities. It has become very popular since cooperative...
1944
Diagenesis and Weathering: DISCUSSION
Eliot Blackwelder
AAPG Bulletin
... at and near the surface of the lands. Krumbein remarks that "The subject of weathering is a science in its own right." Why then suggest that it should...
1947
Zama--A Geophysical Case History: Case Histories
Hugh Evans
AAPG Special Volumes
... dictated that a 4,000-ft (1,220 m) spread would give sufficient NMO differential to attenuate adequately the near-surface multiple reflections emanating...
1972
The Role of Seismic in Play Type and Prospect Development: Eastern Canning Basin
Ted Jacobson
Petroleum Exploration Society of Australia (PESA)
... to noise ratio and a greater dif• ficulty in picking good static corrections. A high near-surface ground water table not only im• proves the signal...
1984
Estimate near-surface velocity with reversals using deep learning and full-waveform inversion
Yong Ma, Xu Ji, Weiguang He, Tong Fei
International Meeting for Applied Geoscience and Energy (IMAGE)
... by complexities in the near-surface weathering layers. One such complexity arises from velocity reversals, which imposes challenges for conventional methods...
2022
Seismic Velocity Model Building in an Area of Complex Geology, Southern Alberta, Canada
Helen Isaac and Don Lawton
Search and Discovery.com
... an estimate of the sub-weathering velocities and can also be used to make a detailed near-surface velocity model if desired. 16 Constant velocity...
2009
Petroleum Geologist and Exploration Geophysicist: Co-Ordination and Seismic Velocity
John D. Hale
CSPG Bulletin
...." After computation of the basic data of measured times by the use of a rapid system of computing, including near-surface "weathering" or low velocity...
1956
Abstract: Performance of Seismic Arrays in the Presence of Weathering Layer Variations; #90254 (2016)
Jubran Akram, Abdullatif A. Al-Shuhail
Search and Discovery.com
... Solutions King Fahd University of Petroleum and Minerals Abstract Near-surface layer variations can degrade the desired response of seismic arrays...
2016