Molar-Tooth Carbonates: Shallow Subtidal Facies of the Mid- to Late Proterozoic

Noel P. James, Guy M. Narbonne, Anne G. Sherman

Journal of Sedimentary Research (SEPM)

... that the fine crystalline spar filling molar-tooth cracks is indistinguishable from that which fills undeformed spherical and cylindrical organic-walled...

Complex Petrophysical Studies to Evaluate the Safety of an Underground Gas Storage in Porous Rocks, #80642 (2018).

Carlo Dietl, Roland Braun, Hansjörg Baumgartner, Eberhard Jahns, Tobias Rudolph

Search and Discovery.com

... of the 3D in situ stress field on drill core samples based on ultrasonic velocity investigations. Pand S-wave measurements are carried out on five...

Orthorhombic AVAZ inversion in the Laplace-Fourier domain

Lin Li, Jinmiao Zhang, Guangzhi Zhang, Zhenyu Zhu, Jiajia Zhang, Chao Li, Xinpeng Pan

International Meeting for Applied Geoscience and Energy (IMAGE)

... (P-wave velocity, S-wave velocity, density, horizontal and vertical fracture densities) from azimuthal seismic data, which includes (1) Laplace...

Abstract: Simultaneous P-P and P-S Waveform Inversion Algorithm Using Pre-Stack Time Imaging Method ; #90187 (2014)

Hassan Khaniani, John C. Bancroft, and Eric von Lunen

Search and Discovery.com

... a forward modeling and a depth migration. The forward modeling engine, which is usually based on a finite difference solution of the elastic wave equation...

Abstract: Comparative Study on 2D Microseismic Source Location with Synthetic Seismograms Recorded by Borehole- and Surfacereceiver Arrays; #90224 (2015)

Anton Biryukov, Simon G.E. Harvey, and Giovanni Grasselli

Search and Discovery.com

... Summary In this report an algorithm based on the finite difference approximation of the 2D acoustic wave equation has been implemented to create synthetic...

Formation of Ripple Bands in a Wave-Convergence Zone

K. P. Black , T. R. Healy

Journal of Sedimentary Research (SEPM)

... term, F, the wave height equation can be derived in two dimensions assuming wave power is conserved. That is, E · cg = 0, (8) where E = 0.125gH2...

Entrainment and Distribution of Different Sand Sizes Under Water Waves

Peter Nielsen

Journal of Sedimentary Research (SEPM)

... and suspended sediment collected at different elevations over wave ripples shows that for grain sizes larger than 0.5 mm the likelihood of entrainment...

Converted Shear-Wave Seismic Fracture Characterization Analysis at Pinedale Field, Wyoming

Search and Discovery.com

SEISMOLOGICAL STUDY OF THE CARACAS EARTHQUAKE OF 15 APRIL, 1960 AND PROBLEMS OF EARTHQUAKE PREDICTION

Günther Fiedler

Asociación Venezolana de Geología, Minería y Petróleo (AVGMP)

...n of the focus of this earthquake by seismic waves. In the record we found a typical longitudinal wave, which we called a P-wave, and about 4.4 seconds late...

Marchenko focusing using convolutional neural networks

Mert S. R. Kiraz, Roel Snieder

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the Marcehenko equation to retrieve the three-dimensional Green’s function. Their algorithm starts with modeling the direct wave using the smooth version...

Geological engineering characteristics and comprehensive fracability evaluation method of the tight sandstone in the Jurassic Qianfoya Formation in Sichuan Basin in China

Xin Fan, Haibo Wang, Fengxia Li, Zhiwen Huang, Tong Zhou, Jia Cui, Hao Zeng, Junqing Dai

Unconventional Resources Technology Conference (URTEC)

... on the in-situ stress calculation model distribution along the well can be predicted. [9-10] , as shown in equation (1), the principal stresses URTeC...

Distinguishing Depositional Environments in Shallow-Water Mixed, Bio-Siliciclastic Deposits on the Basis of the Degree of Heterolithic Segregation (Gelasian, Southern Italy)

Domenico Chiarella, Sergio G. Longhitano

Journal of Sedimentary Research (SEPM)

..., Fielding, C.R., and Jones, B.G., 2008, Ichnological and sedimentological signatures of mixed wave- and storm-dominated deltaic deposits: examples...

Paleohydraulic Interpretation of Antidune Bedforms with Applications to Antidunes in Gravel

John Shaw , Rolf Kellerhals

Journal of Sedimentary Research (SEPM)

.... Maximum steepness is given by Kennedy (1961) as [Hw]/[L] = 0.142 (6) where Hw is the height of the water wave. The equation is due to Michell (1893...

Abstract: Pre-survey Planning for Microseismic Monitoring Projects; #90174 (2014)

Brad Artman, Ben Witten, and Brad Birkelo

Search and Discovery.com

... the radiation pattern of P-wave energy from a (double-couple) fault. Figure 2 shows the sum of Sv and Sh amplitudes. The horizontal plane shows...

PS-wave seismic data: A game changer in exploration and monitoring

Ali Tura, James Simmons, Sima Daneshvar, Matthew Copley, Joseph Stitt

International Meeting for Applied Geoscience and Energy (IMAGE)

..., a wave-equation based AVO application was also shown by Dhelie et al. (2021) to be an established geophysical tool to extract elastic subsurface...

Full phase-velocity spectrum inversion of multimode Rayleigh waves

Yanlong Niu, Yunyue Elita Li, Siau Chen Chian

International Meeting for Applied Geoscience and Energy (IMAGE)

... of near-field effects for seismic surface wave velocity estimation with cylindrical beamformers: Journal of Geotechnical and Geoenvironmental Engineering...

Reevaluation of the inferred relationship between living rhodolith morphologies, their movement, and water energy: implications for interpreting paleoceanographic conditions

Laura G. O’Connell, Noel P. James, Adela S. Harvey, John Luick, Yvonne Bone, Scoresby A. Shepherd

PALAIOS

... are spherical (Fig. 9). Fruticose rhodoliths have cylindrical protuberances that are truly branched and generally longer than 3 mm (Fig. 6). Warty...

Destructive vs Non-destructive: Establishing an Empirical Relationship between Impulse Hammer and Triaxial Test - Derived Rock Mechanical Properties

Maaruf Hussain, Arqam Muqtadir, Abduljamiu Amao, Khalid Al-Ramadan, Lamidi Babalola

Unconventional Resources Technology Conference (URTEC)

... acquired by performing triaxial tests on rock samples to obtain the static moduli (Es and Poisson’s ratio (vs)) and the P and S wave velocities (Vp and Vs...

SEQUENCE STRATIGRAPHY OF THE RED MOUNTAIN FORMATION; SETTING FOR THE ORIGIN OF THE BIRMINGHAM IRONSTONES

Timothy M. Chowns,

Alabama Geological Society

... for example Posamentier and Allen, 1999). Marine erosion surfaces are the product of wave or tidal erosion (ravinement surfaces) and commonly overprint...

Seafloor elastic parameters estimation using a regression neural network

Moacyr de Souza Bezerra, James Simmons, James Gaiser

International Meeting for Applied Geoscience and Energy (IMAGE)

.... This work shows the results of the method applied to estimate P-wave properties. INTRODUCTION main goal is to train the neural network engine...

Abstract: Deghost + Denoise + Demultiple + Velocity & Q Inversion + Depropagate = Seismic Imaging (Geophysics Paper 17)

Mehmet Ferruh Akalin

Geological Society of Malaysia (GSM)

...: Geophysics, 32, 859-881. TANER, M.T. AND KOEHLER, F., 1977, Wave-equation migration: Technical brochure, Seiscom-Delta, Inc. ULRYCH, T. J. AND SACCHI...

THE MORPHODYNAMICS AND SEDIMENTOLOGY OF A SEASONALLY CONTROLLED MICROTIDAL TIDAL INLET: THE NARIVA RIVER TIDAL INLET, COCOS BAY, TRINIDAD

Saeed Khan, Brent Wilson, Ryan Ramsook, Hasley Vincent

Journal of Sedimentary Research (SEPM)

... modulated shorefaces: Journal of Sedimentary Research, v. 79, p. 793–807. Davis, R.A., and Hayes, M.O., 1984, What is a wave-dominated coast...

G. Non-Normal Incidence Reflections and the Determination of Lithology - Use of Shear Waves and Amplitude with Offset

Norman S. Neidell

AAPG Special Volumes

.... The SOLID program is, in fact, a particularly cost effective calculation considering the wave equation principles which it must honor. In the following...

PREDATION-FACILITATED PRESERVATION OF ECHINOIDS IN A TROPICAL MARINE ENVIRONMENT

CARRIE L. TYLER, TROY A. DEXTER, ROGER W. PORTELL, MICHAŁ KOWALEWSKI

PALAIOS

...) at the terminal end of their feeding tracks (Fig. 2C). The field site consisted of a 250 m 3 100 m (~ 0.025 km2) section of this wave protected area...

Application of distributed fiber optic and borehole-surface jointly acquired seismic data in high-resolution processing of conventional seismic

Zhanqing Yu, Cheng Wang, Miao Kun

International Meeting for Applied Geoscience and Energy (IMAGE)

... on the ray or by the wave equation method based on the wave field extension, and can be modeled in the time domain or the depth domain (Leaney,W.S....