Abstract: A Strategy for Near-Surface Model Construction and Subsurface Structural Discrimination, by P. I. Pecholcs and G. Costas; #90942 (1997).

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Geophysical Investigation for Groundwater Exploration at UKM's Kuala Pilah Matriculation Centre, Negeri Sembilan

Abdul Rahim Samsudin, Abdul Ghani Rafek, Umar Hamzah

Geological Society of Malaysia (GSM)

... localities within the study area. This conductive layer could be associated with near surface water saturated zone or aquifer. However based on seismic data...

Abstract: Statics or Statistics?„The Near-Surface Revisited; #90211 (2015)

David Henley

Search and Discovery.com

... for compensating seismic data for the effects of the highly variable near-surface weathered layer, usually classified as “statics” methods...

Deep learning Laplace-Fourier full-waveform inversion with virtual supershot gathers

Lei Fu, Daniele Colombo, Weichang Li, Ernesto Sandoval-Curiel, Ersan Turkoglu

International Meeting for Applied Geoscience and Energy (IMAGE)

... an effective solution for high-resolution velocity mapping in complex near-surface conditions. Introduction Accurately and efficiently characterizing subsurface...

Abstract: Improved Imaging of a Fold and Thrust Belt Regime, Onshore Trinidad, by Means of the Common Reflection Surface (CRS) Method; #90238 (2015)

Dennis Otto, Philip Schlueter, Terrell Dhanpaul, Samuel Ragbir, Curtis Archie, and Nancy Gallai-Ragobar

Search and Discovery.com

..., the surface of this survey is predominantly covered by a deep weathered layer, swamps and vegetation. Due to these settings, strong ground roll and abnormal...

South Halfway 3D: An example of a challenging onshore acquisition and subsequent processing and a unique way of performing a prestack elastic inversion on a difficult dataset

Marianne Rauch, Doug Brost, Hassan Odhwani, Aravind Nangarla, Adriana Gordon

International Meeting for Applied Geoscience and Energy (IMAGE)

... surface supported by a soft unfrozen muddy near surface. The unfrozen base allowed the frozen surface a mechanism to move. At the time of acquisition...

Origin of Graben in the Needles District, Canyonlands National Park, Utah

George E. McGill, Albert W. Stromquist

Four Corners Geological Society

... in the surface layer of ground limestone to produce a sawtooth effect reminiscent of that seen near the northern ends of the graben in Canyonlands (fig. 7...

Gravity Anomalies and Passive Continental Margins, Canada and Norway

L. W. Sobczak

CSPG Special Publications

... much of the anomaly is caused by near surface structures such as basement ridges, high density belts, carbonate banks and uncompensated sedimentary...

Siting recharge basins and improving groundwater models using multiple survey methods in Southern California

Nicole Pendrigh, Michael Blazevic, John Jansen, Kristen Marberry

International Meeting for Applied Geoscience and Energy (IMAGE)

... at or near the surface, a higher resistivity middle layer that is interpreted as sand and gravel with varying amounts of fine grained material, a low...

Abstract: Static Corrections Via Raypath Interferometry: Recent Field Experience; #90224 (2015)

David C. Henley

Search and Discovery.com

... the near-surface layer is much lower in velocity than deeper layers, we expect raypath interferometry to provide statics correction at least as good...

A Tectonic Model for the Onshore Kutai Basin, East Kalimantan, Based on an Integrated Geological and Geophysical Interpretation

John L. C. Chambers, Timothy E. Daley

Indonesian Petroleum Association

.... The implication of the structural models is that relatively small amounts of shortening are interpreted to have occurred across these near-surface...

A Geologic Cross Section of Northeastern California from Seismic Refraction Results

G. S. Fuis, J. J. Zucca

Pacific Section SEPM

.... The Modoc model, in contrast, is more coarsely layered and has lower velocities at all depths down to 25 km (Fig. 4 ) . In the Modoc model, a thick near...

Abstracts: Getting Better Shear-wave Data over Heavy Oil: Rational for Buried Acquisition; #90173 (2015)

Rob Kendall and Richard A. Bale

Search and Discovery.com

... because of sensitivity to the changes in viscosity associated with heating the bitumen. Often shear waves suffer in resolution because of near surface...

Assessing and processing three-dimensional photogrammetry, sedimentology, and geophysical data to build high-fidelity reservoir models based on carbonate outcrop analogues

Ahmad Ramdani, Pankaj Khanna, Gaurav Siddharth Gairola, Sherif Hanafy, and Volker Vahrenkamp

AAPG Bulletin

...-penetrating radar (GPR) and near-surface seismic surveys are among the two most common methods applied for near-surface geophysics investigation (Pratt...

Abstract: When Surface Waves Become our Zoom-in Lens„a Case Study from Western Desert Of Egypt; #91204 (2023)

Fatma Ibrahim

Search and Discovery.com

... this challenge, the near surface model was converted to primary velocities based on correlation between the direct arrival velocities from...

ABSTRACT Roof Breakup and Extrusion of Shallow Salt Stocks During Lateral Shortening, #90104 (2010)

Dooley Tim P.; Jackson Martin P.; Hudec Michael R.

Search and Discovery.com

... granular materials and silicone to explore the far‐reaching effects of regional shortening on near‐ surface structural evolution of diapiric stocks...

3D land full-waveform inversion in the Permian Basin: A case study at Quail Ridge East

Benjamin Consolvo

International Meeting for Applied Geoscience and Energy (IMAGE)

... tomography. The main goal of this case study was to use FWI to recover accurate near-surface velocities that could be used in the future for better...

Multi-method geophysical characterization of Karst dissolution structures in an urban South Florida wellfield

Matthew J. Sirianni, Xavier Comas, William Wright, Matthew McClellan, Gregory J. Mount, Hugo Soto, Maria Macfarlane

International Meeting for Applied Geoscience and Energy (IMAGE)

... watershed hydrological research using near surface geophysics: A vision for, and review of, electrical and magnetic geophysical methods: Hydrological...

Determining Structure and Velocities in the Los Angeles Basin Using Passive Seismic with Dense Oil-Company Arrays

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-- no title --

user

Search and Discovery.com

... significantly from interpretive input to velocities used for time and depth migration. With low fold in the near surface, low signal-to-noise ratios...

Abstract: Seismic Imaging in the Foothills of the Zagros Mountains Using Geologic Constraints, by R. Vestrum, #90188(2014)

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-- no title --

user

Search and Discovery.com

... significantly from interpretive input to velocities used for time and depth migration. With low fold in the near surface, low signal-to-noise ratios...

ABSTRACT: Multiple Layer Modeling of the Near-Surface to Calculate Static Corrections, by Bridle, Ralph M.; Al-Saad, Abdulaziz; #90141 (2012)

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Abstract: Predicting Free Surface Multiples without the Water: SRME on Land; #90224 (2015)

Keith Wilkinson, Richard Bale, and Ken Gray

Search and Discovery.com

... primary and first order multiple events, which have been modelled using a near surface low velocity layer based on a real survey. Compared with using...

Velocity Analyses of Near Seafloor Strata Based on Multichannel Seismic Data from the Tonga Platform

Jeffrey E. Cole, Dennis M. Mann

Circum Pacific Council Publications

... series of standard data-reduction techniques. The occurrence of high-velocity strata near the seafloor and an apparent near-surface velocity...