Evolution of a Near-Surface Model in an Area of Complex Topography

Search and Discovery.com

Mechanical Analysis: Part 7. Methods of Study

Stina Gripenberg

AAPG Special Volumes

... particle is surrounded by a double layer of ions;--an inner layer of negative ions, firmly attached to the surface by the action of residual valence...

Mechanical Analysis

Stina Gripenberg

Special Publications of SEPM

... layer is removed. He found, however, by calculation that the error arising from this is negligible, provided the sample is not taken too near the surface...

Velocity Variation Along the Tonga Platform from Multichannel Reflection and Sonobuoy Refraction Data

Robert M. O'Connor

Circum Pacific Council Publications

... as described by Cole and Mann (this volume). Line 14 data also contain the same near-surface velocity inversion described in their paper. The upper three...

RECENT AND PLEISTOCENE GEOLOGY OF THE CALCASIEU ENTRENCHED VALLEY SYSTEM OF SOUTHWEST LOUISIANA; Rufus J. LeBlanc; Search and Discovery Article #60004 (2000)

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Regional Geology of Eastern Canada Offshore

Grey H. Austin

AAPG Bulletin

... chalk layer near the top; and Tertiary mudstone and fine sandstone. The cross section which is drawn along strike to accommodate all the available well...

Abstract: Near-surface S-wave Velocity from an up Hole Survey using Explosive Sources; #90187 (2014)

Saul E. Guevara, Gary F. Margrave, and William M. Agudelo

Search and Discovery.com

... component data from the 2D line can also be correlated to some extent with the velocities obtained from the uphole. Introduction The land near the surface...

Abstract: Statistical Depth Imaging with Path Summation through Complex Near-Surface; #91204 (2023)

Ilya Silvestrov, Andrey Bakulin, Maxim Protasov

Search and Discovery.com

... approach for depth imaging of target deep reflectors in the presence of a complex near-surface scattering layer. We characterize such layer as a random...

The Thousand Dollar Prospect, Rich County, Utah, A Case History

Valen D. Ott, Kenneth R. Kreckel

Rocky Mountain Association of Geologists

... became clearer. 2) Tilted (linear) processing datum - to minimize the rapidly varying near surface velocities. 3) Muting - precise...

Model Studies of Salt-Dome Tectonics

Travis J. Parker , A. N. McDowell

AAPG Bulletin

... near the surface when a new layer of overburden is added, the arching of the new layer is confined to an area only slightly larger than the cross...

Two-dimensional seismic refraction tomography of a buried bedrock valley at Hallsands beach, Devon, United Kingdom

Eric B. Avalos, David H. Malone, Eric W. Peterson, William P. Anderson, and Roland W. Gehrels

Environmental Geosciences (DEG)

.... Hirsch et al. (2008) used refraction tomography to map the bedrock surface beneath terrace deposits along the Bow River near Calgary, Canada. They found...

Exploration at the eastern edge of the Precaspian basin: Impact of data integration on Upper Permian and Triassic prospectivity

Jean-Pierre Barde, Peter Gralla, Josef Harwijanto, Juergen Marsky

AAPG Bulletin

... surface and as seepage, mostly focused along and over the salt structures (Figure 7). Permian-Triassic Sandstones: Seismic Expression, Sonic Velocities...

ABSTRACT: Near-Surface Models for Transition Zone Data in the Arabian Gulf; #90051 (2006)

Joseph R. McNeely, Robert E. Ley, II, Nikolai Barsoukov, Ralph Bridle, Mohammad A. Homaili, Bryan R. Maddison

Search and Discovery.com

... (Figure 1). This near surface modelling strategy has resulted in a consistent near-surface correction static solution. Figure 1: Single Layer...

Application of Shallow Seismic Reflection in Geoenvironment and Geoengineering Mapping

Umar Hamzah, Abdul Rahim Samsudin, Abdul Ghani Rafek

Geological Society of Malaysia (GSM)

... important factor is the ability of the near surface material to propagate high-frequency seismic signals (Steeples and Miller, 1990). Shallow seismic...

Abstract: Improved PSDM Imaging Workflow by Integrating Near Surface and Well Velocities; #90319 (2018)

Duryodhan Epili, Hani Alzharani, Adam J. Fox, Luke LaFreniere

Search and Discovery.com

...Abstract: Improved PSDM Imaging Workflow by Integrating Near Surface and Well Velocities; #90319 (2018) Duryodhan Epili, Hani Alzharani, Adam J. Fox...

Permafrost Studies in the Norman Wells Region, Northwest Territories

P. J. Kurfurst, R. M. Isaacs, J. A. Hunter, W. J. Scott

CSPG Special Publications

... was dismantled, and since then, the road near Norman Wells has not been used. The mean annual surface temperature of the Canol Road is higher than the mean...

Imaging Subsurface Structures Under Gas Clounds by Multi-Component Technology

Xiaogui Miao, Loh Fong Cheen, Libo Zi, Jing Du, Magali Beele, Jacques Bonnafe, Natalia Anggriani, Gilles Vallon, Claudio Strobbia

Indonesian Petroleum Association

... the picked first-arrivals for a near-surface velocity field. First arrivals are treated as direct body waves propagating along turning rays, enabling...

Seismic Velocity Model Building in an Area of Complex Geology, Southern Alberta, Canada

Helen Isaac and Don Lawton

Search and Discovery.com

... sections, near-surface velocity models from refraction statics analysis, averaged sonic interval velocities and limited migration velocity analysis...

ABSTRACT: SUBSURFACE GEOMETRY AND STRUCTURE OF THE SAN ANDREAS AND ASSOCIATED FAULT ZONES FROM HIGH-RESOLUTION SEISMIC IMAGING; #90014 (2003)

Catchings, R. D., M. J. Rymer, M. R. Goldman

Search and Discovery.com

... images show that the SAFZ consists of numerous interconnected faults with varying components of slip. Near-surface faulting occurs over lateral...

Lateral Changes in Seismic Velocities and Their Effect on Depth Prediction

J. Pinchin, M. Bayly

Petroleum Exploration Society of Australia (PESA)

... to predict vertical velocities accurately. Firstly, variations in near-surface statics can, and do, affect stacking velocity measurements. Secondly...

Poisson binomial-based random undersampling scheme for near-surface compressive sensing

Sayan Mukherjee, Yunyue Elita

International Meeting for Applied Geoscience and Energy (IMAGE)

...Poisson binomial-based random undersampling scheme for near-surface compressive sensing Sayan Mukherjee, Yunyue Elita Poisson Binomial-based random...

Abstract: Improving Reservoir Imaging with Time-Lag Fwi in the Partitioned Zone Between Kuwait and Saudi Arabia; #91204 (2023)

Art Petrenko, Trevor Coulman, Guangfu Shao, Ibrahim Hakam, Mohammed Almutairi, Sujoy Ghose, Kai Zhang

Search and Discovery.com

...-velocity anhydrite layer, underlying a very slow weathering layer (2500 ft/s near the surface). This combination limits the angle of transmitted...

Limitations on the Use of Conventional Ground Water Techniques in Characterizing the Fate of Produced Waters in On-Shore Gulf Coast Sediments

Jeffrey S. Hanor

GCAGS Transactions

... have Cl values of less than 20 mg/L, and the areal limit of the extent of near-surface contamination is taken to be their plot of the 100 mg/L dissolved...

Joint inversion of first-break and early-arrival wave for near surface imaging

Yiming Pan, Kai Zhang, Yipeng Xu, Hailin Wang, Ping Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

... of seismic first-arrival waves to invert near-surface velocities to provide velocity information for the undulating surface (Zhang, 2018...

Low-Energy Seismic Survey of Quaternary Materials, Rocky Mountain National Park, Colorado

William W. Locke

Rocky Mountain Association of Geologists

...). Such geophys~cal surveys are often commercial in nature, involve large energy sources, and are designed for deep penetration Conseresolut~on near-surface...