Crustal Structure of Oklahoma: Abstract

Eysteinn Tryggvason, Bob Qualls

Tulsa Geological Society

... of Tulsa to near Maniton southwest of Lawton. A model of the near surface layers of the earth fitting the observed wave propagation consists of three...

Multidisciplinary site investigations using refraction microtremor surveys

A. Pancha, J. Louie, R. A. Apperley

International Meeting for Applied Geoscience and Energy (IMAGE)

.... Both the depth and near-surface resolution of the velocity model are dependent on the frequency content of the recorded ambient ground motion, data...

Correlation of Marine Sediments from the Texas-Louisiana Continental Shelf

Dunn, Dean A. Stokes, Traci L.

GCAGS Transactions

... (2.64 g/cm3) is in the northeast, in shallow nearshore waters. Discussion Sediment Distribution Surface and near-surface sediments of the Texas-Louisiana...

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...

Abstract: Understanding the root cause of poor seismic data through modelling; #90254 (2016)

Anastasia Poole, Peter V. Baaren, John Quigley

Search and Discovery.com

... studies using synthetic data are becoming more and more accepted in the marine environment. For marine acquisition the near-surface is relatively simple...

Abstract: Using Petrophysics and Cross-Section Balancing to Interpret Complex Structure in a Limited-Quality 3-D Seismic Image

Bob A. Hardage, Virginia M. Pendleton, Richard P. Major, George B. Asquith, Dan Schultz-Ela, David E. Lancaster

West Texas Geological Society

... by high-velocity salt/anhydrite of varying thickness. These near-surface conditions attenuated seismic reflection signals from deep targets and made...

Geophysical Reconnaissance on African Shelf: I. Cape Town to East London

R. Leyden , M. Ewing , E. S. W. Simpson

AAPG Bulletin

...), and questionable velocities recorded near the end of the section due to shallow structure (Fig. 5), the results are reasonably consistent. Layer...

Structure of the Outer Convergent Margin Off Kodiak Island, Alaska, from Multichannel Seismic Records: Convergent Margins

Roland Von Huene

AAPG Special Volumes

...------------------------ profile in the trench. Similarly, slope deposits containing greater amounts of sand may cause the higher near-surface velocities...

Abstract: Velocity Modeling and Static Corrections for Complex near-Surface - from Alternative Solutions to Improve Seismic Imaging in Muglad Basin, by Hussein A. Ahmed; #90105 (2010)

Search and Discovery.com

III Columbia Oil & Gas Investment Conference: Conventional & Unconventional Hydrocarbon Resources - Abstracts

Asociación Colombiana de Geólogos y Geofisicos del Petróleo (ACGGP)

... models of the near surface thicknesses and velocities. These models are usually used to correct the near-surface layer deleterious effect either...

Section Two: Initiation and Development of Salt Diapirism and Growth Faulting Under the Continental Slope and Continental Shelf

New Orleans Geological Society

... near the uplifts; buried slump deposits are common. Closed lows provide the most likely setting for sand deposition in this surface layer...

Abstract: Interferometric Approach to Complete Refraction Statics Solution; #90187 (2014)

Valentina Khatchatrian and Mike Galbraith

Search and Discovery.com

... statics corrections. A two layer near surface model has been built to compute refraction statics. Figure 8 shows the brute stack (CMP) before...

Abstract: Estimation of Dispersive Parameters of Surface Wave Using the Generalized S Transform; #90187 (2014)

Roohollah Askari and Robert J. Ferguson

Search and Discovery.com

... Hz. It can be concluded that there is a near surface layer with less attenuation than deeper layers. The estimated group velocity at the frequency...

Multi-Azimuthal Walkway VSP for Full Azimuth Seismic Calibration

Konstantin Galybin, Anastasia Poole, Michael Giles

Petroleum Exploration Society of Australia (PESA)

... and near surface heterogeneity (statics). A MAZ WVSP was designed and acquired in Kyanite-1, in the Western Patchawarra Trough using broad band 2–180Hz...

The Attenuation Effects of Surface-Wave Propagations on Rockmass Using SASW Method

Suharsono, Abdul Rahim Samsudin

Geological Society of Malaysia (GSM)

... characterization across broad ranges of scales from the near-surface to the whole of earth's crust. If an impulse of short duration is created...

A High-Resolution Seismic Survey to Image the Top of Salt at Avery Island, Louisiana

Dawn Standridge, Cathy Bishop, Gary Kinsland, Robert Schneider, Laura Serpa

GCAGS Transactions

... the near surface velocities can vary from less than 1000 ft/s (320 m/s) to more than 6,900 ft/s (2,100 m/s) (Miller et al., 1989; Goforth and Hayward...

Seismic Facies and Sedimentology of Terrigenous Pleistocene Deposits in Northwest and Central Gulf of Mexico: Section 2. Application of Seismic Reflection Configuration to Stratigraphic Interpretation

Charles J. Stuart , Charles A. Caughey

AAPG Special Volumes

..., universities, and government agencies; thus a wealth of geophysical and near-surface geological data (Figs. 1, 2) is available. As a part of a regional study...

Physical Processes in the Ocean: Part 2: Relation of Oceanography to Sedimentation: PART 2

R. H. Fleming, Roger Revelle

AAPG Special Volumes

... variables: temperature, salinity and pressure. Conditions at and near the surface are determined by the external agencies, mixing and the general...

Dynamics of Sediment Movement

Gerard Middleton, John B. Southard

Special Publications of SEPM

... the angle of initial yield. Beyond this angle, the downslope component of gravity forces acting on a surface layer of sand exceeds the resistance offered...

Abstract: Rayleigh Inversion Application Study in Some Areas of Middle East; #90319 (2018)

Peiming Li, Fuhao Jiang, Yimeng Zhang, Zhihui Yan, Lieqian Dong

Search and Discovery.com

...¹ ¹BGP, Zhuozhou, Hebei, China. ABSTRACT The near-surface structure is very complex in some areas of Middle East, where the investigation...

SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Geologic Divisions in the Southern Appalachians and Interpretation of the Seismic Data

Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver

AAPG Special Volumes

... change from sedimentary to metamorphic rocks across the Blue Ridge fault, the velocities of the near-surface material should increase accordingly...

Carbonate Sedimentation and Diagenesis

R. C. Murray

Wyoming Geological Association

... outcrops, and the subsurface, there appears to be a characteristic cycle in the diagenesis of gypsum-anhydrite minerals: surface or near-surface gypsum...

Measuring seasonal velocity variations on an urban DAS array

Jihyun Yang, Jeffrey Shragge

International Meeting for Applied Geoscience and Energy (IMAGE)

...% variations in surface-wave velocities between winter and spring months, which are likely related to variations in near-surface groundwater content...

SG14: The COCORP Seismic Reflection Traverse Across the Southern Appalachians - Data Acquisition and Processing

Frederick A. Cook, Larry D. Brown, Sidney Kaufman, and Jack E. Oliver

AAPG Special Volumes

... processing is often helpful in clarifying certain complex relationships. Of particular use may be detailed analyses of, and corrections for, near-surface...

Petrology and Diagenesis of Sandstones in the Post Oak Formation (Permian) Southwestern Oklahoma

Zuhair Al-Shaieb, Richard E. Hanson, R. Nowell Donovan, John W. Shelton

Journal of Sedimentary Research (SEPM)

... surface and near-surface conditions to which the Post Oak was subjected as the result of uplift and denudation. Degradation of the chlorite cement to mixed...