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The AAPG/Datapages Combined Publications Database
Showing 1,682 Results. Searched 200,619 documents.
Coastal Hazards and the Global Distribution of Human Population
Christopher Small, Vivien Gornitz, Joel E. Cohen
Environmental Geosciences (DEG)
... (e.g., the El Nino-Southern Oscillation or the Northern Atlantic Oscillation). The RSLR is calculated as the slope of the least squares linear...
2000
Aspects to the Resolving Power of 3D Seismic Surveys
Wolfgang Houba
Geological Society of Malaysia (GSM)
... • 8) Fig. 8. Estimation of the Velocity Ellipse stack and 30 migration. Conventional 20 analyses can be applied if all or at least the long source...
1985
Upscaling acoustic wave equation using renormalization group theory
Ajay Malkoti, Shravan M. Hanasoge, Rene Edouard Plessix
International Meeting for Applied Geoscience and Energy (IMAGE)
... show a good consistency for generated waveforms. INTRODUCTION Seismic imaging techniques such as reverse-time migration, least-squares reverse-time...
2022
THE CONCEPT OF SEAFLOOR SPREADING APPLIED TO VENEZUELA, EL CONCEPTO DE DILATACION DEL PISO DEL MAR APLICADO A VENEZUELA
R. M. Stainforth
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... geológicos similares a aquellos que ocurrieron contemporáneamente en Venezuela. Fig. 1: Fit of Aferica the Americas, after Bullard ef al.,based on least...
1969
Paleomagnetic results from Mayreau, West Indies, rule out large tectonic rotations since the Eocene
Speed, R.G., Burmester, R.F. and Beck, M.E.
Geological Society of Trinidad & Tobago
..., The least-squares line and plane and the analysis of paleomagnetic data, Geophys. J. Roy. Astron. Soc. 62, 699718. 1980. McFadden, P.L., and F.J. Lowes, 1981...
1995
EXPLORING FOR STRATIGRAPHIC TRAPS IN THE OFICINA AREA, VENEZUELA
Gordon A. Young
Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)
... the channel trends. Map C shows a third-order polynomial least-squares residual trend surface drawn on the U2 sand, which is the base of the Oficina...
1971
Localized wavefield inversion (LWI): An adaptation of multi-block ADMM for localized FWI
Hossein S. Aghamiry, Ali Gholami, Stephane Operto, Alison Malcolm
International Meeting for Applied Geoscience and Energy (IMAGE)
... data-assimilated (DA) wavefields, that best jointly fit the observations and satisfy the wave equation in the least-squares sense. Then, the subsurface...
2022
Robust localized adaptive waveform inversion: A new regularization for Gabor deconvolution
Peng Yong, Romain Brossier, Ludovic Mtivier
International Meeting for Applied Geoscience and Energy (IMAGE)
.... From a point of view of regularization, the local matching filter, calculated by the equation (7), is the optimal solution of the regularized least...
2022
Advanced Techniques for On-Line Monitoring of Brown Coal Quality
R M Borsaru, N G Cutmore, A L Ottrey, B D Sowerby
Petroleum Exploration Society of Australia (PESA)
... dried moisture using a least squares fitting technique and an equation of the form Gauge Moisture = ao + aJ(0/w) LOW PASS FI LT ER (6) INST RUMENTAT...
1992
Modeling of scattering losses using energy transport
Manuel Alejandro Jaimes Caballero, Roel Snieder
International Meeting for Applied Geoscience and Energy (IMAGE)
..., 327–370, doi: https://doi.org/10.1016/S0165-2125(96)00021-2. Sun, J., S. Fomel, and T. Zhu, 2015, Preconditioning least-squares RTM in viscoacoustic...
2022
Cyclical Sedimentation in Lake Turkana, Kenya: Chapter 11
John D. Halfman, Paul J. Hearty
AAPG Special Volumes
... with a clamped, cubic-spline routine. The linear trend was removed from each series by a least-squares linear regression prior to analysis. A uniform...
1990
Simpson (Ordovician) Sandstone and Hunton (Late Ordovician to Early Devonian) Carbonate Textures from Deep Parts of the Anadarko Basin
Barry Borak, Gerald M. Friedman
Oklahoma City Geological Society
...). Figure 3. Plots of mean vitrinite reflectance (Ro) and depth for macreal samples in the Bertha Rogers well. A. Linear least squares fit, b. Second...
1982
The Nonlinear Inversion of Paleogeothermal Evolution: An Example from the Northern Part of the South China Sea
Xue aimin
Geological Society of Malaysia (GSM)
..., the least squares statistical analysis was used to obtain the relationship of Ro data with depth. The relationship of Ro with depth accepted...
1993
Subsurface Pressure and Temperature Distributions: In Sacramento Basin, California
M. S. Lico, Y. K. Kharaka
Pacific Section of AAPG
... by a least squares fit of all temperature data within that township (Fig. 4). The mean annual near-surface temperature was taken to be 18.3°C. All log...
1983
Gravity Exploration on the Central Gulf Coast
Jackie D. Stewart
New Orleans Geological Society
... by J.A. Elkins in "Geophysics", Volume 16, No. 1, Jan 1951. The "least squares" procedure is another approach for separating local anomalies from those...
1991
Collecting history of vertebrate fossils at American Falls, Idaho: a reservoir of data to inform land-use policy
Andrew E. Stratton, Leif Tapanila, Jeffrey H. Stratton
PALAIOS
... to recover fossils by the IMNH. These minimum distance values were compared to collection event density for each locality using ordinary least squares (OLS...
2014
CO2 Injection in Coal Seams, an Option for Geological CO2 Storage and Enhanced Coal Bed Methane Recovery (ECBM)
Ferian Anggara, Kyuro Sasaki, Hendra Amijaya, Yuichi Sugai, Lucas Donny Setijadji
Indonesian Petroleum Association
... and PL) were determined from the experimental data by a least squares fitting procedure (Busch, et al., 2003). High pressure (up to 10 MPa) Generally...
2010
Rb-Sr Isotopic Data from Three Suites of Igneous Rocks, Cape Breton Island, Nova Scotia
J. Duncan Keppie, A. N. Halliday
Atlantic Geology
... 1969. Least squares fitting of a straight l n . ie with correlated errors. Earth and Planetary Science Letters, 5 pp. 320-324...
1986
A Ramboe Study of the Cape Range No. 2 Well, Exmouth Sub-Basin
R. W. T. Wilkins, G. Hladky, M. V. Ellacott, J. D. Saxby
Petroleum Exploration Society of Australia (PESA)
... materials. To evaluate the subtle spectral changes in the region of the oil window, a least squares program for the decomposition of spectra...
1988
AGES AND POSSIBLE ORIGINS OF ARCHEAN BASEMENT LITHOLOGIES FROM THE SOUTH-CENTRAL BEARTOOTH MOUNTAINS: U-PB ZIRCON AND OXYGEN-ISOTOPE EVIDENCE
Carla W. Montgomery
Montana Geological Society
.... Publ. 84, p. 45-56. York, D., 1969, Least squares fitting of a straight line with correlated errors: Earth and Plan. Sci...
1986
Trend Surface Analysis of Trace Chemical Data, Park City District, Utah
M. P. Nackowski, Charles A. Mardirosian, Joseph M. Botbol
Utah Geological Association
... fitting consist of finding the constants to the arithmetic equations such that the least-squares criterion is satisfied. In fitting a trend surface...
1968
A Comparison between Geostatistical Inversion and Conventional Geostatistical-simulation Practices for Reservoir Delineation
C. Torres-Verdn, A. Grijalba-Cuenca, H. W. J. Debeye
AAPG Special Volumes
.... This convolution yields a numerical simulation of the poststack seismic amplitude data. A seismic residual (normally a least-squares residual...
2006
Earthquake Activity In and Around Canyonlands National Park, Utah
Ivan G. Wong, James R. Humphrey, Auriel C. Kollmann, Barbara B. Munden, Douglas D. Wright
Four Corners Geological Society
..., 1986). Earthquake Recurrence A least-squares fit through the data points of a frequency-magnitude plot for all earthquakes located within...
1987
The Application of a Data Base System to a Program for the Evaluation of Offshore Development Systems
Hirokazu Tada, Ryoji Hidaka, Kozo Yokokura, Shinji Shoda, Shigeyuki Yato, Yukie Kobayakawa
Indonesian Petroleum Association
... Service". Next, the two factors are estimated using the method of least squares. The data base stores data on 600 production wells at present...
1989
On the connection between WRI and FWI: Analysis of the nonlinear term in the Hessian matrix
Ali Gholami, Hossein S. Aghamiry, Stephane Operto
International Meeting for Applied Geoscience and Energy (IMAGE)
... is expressed as the nonlinear least-squares (LS) problem (Tarantola, 1988; Pratt et al., 1998). 1 ∗ d − PA(m)−1 b∗ 2 , (1) 2 2 where m is the model...
2022