Results 121 to 130 of about 49,692 (293)

Shear-Wave Splitting in a Critical Crust: the Next Step Biréfringence des ondes transversales dans les croûtes critiques : la prochaine étape

Oil & Gas Science and Technology, 2006
Arguably, shear-wave splitting displaying azimuthal anisotropy has not lived up to its initial promise of opening a new window for understanding cracks and stress in the crust.
Crampin S.
doaj   +1 more source

Lattice Boltzmann model approximated with finite difference expressions

, 2017
We show that the asymptotic properties of the link-wise artificial compressibility method are not compatible with a correct approximation of fluid properties.
Dubois, François, Lallemand, Pierre, Obrecht, Christian, Tekitek, Mohamed   +3 more
core   +3 more sources

Dynamic tensile strength and fracture evolution of characteristic shale with bedding and hole using linear regression theory

Deep Underground Science and Engineering, EarlyView.
The spiral conical perforations generated during methane in situ explosion fracturing operations lead to tensile fracture propagation in shale reservoirs being governed by the combined effects of impact pressure, bedding, and aperture under explosive loading. Using multiple regression analysis and digital image correlation technology, the mechanisms of
Yabo Chai, Ning Luo, Jianan Zhou, Haohao Zhang, Penglong Li, Yu Wang, Cheng Zhai, Tianran Ma   +7 more
wiley   +1 more source

Feasibility of Deep Learning in Shear Wave Splitting analysis using Synthetic-Data Training and Waveform Deconvolution

Seismica
Teleseismic shear-wave splitting analyses are often performed by reversing the splitting process through the application of frequency- or time-domain operations aimed at minimizing the transverse-component energy of waveforms.
Megha Chakraborty, Georg Rümpker, Wei Li, Johannes Faber, Nishtha Srivastava, Frederik Link   +5 more
doaj   +1 more source

Van Hove Exciton-Cageons and High-T$_c$ Superconductivity: VIIID Solitons and Nonlinear Dynamics

, 1993
The low-temperature orthorhombic (LTO) phase transition in La$_{2-x}$Sr$_x$CuO$_4$ can be interpreted as a dynamic Jahn-Teller effect, in which the degenerate electronic states are associated with the large densities of states at the two van Hove ...
Axe, Balseiro, Barisic, Benedek, Bilz, Bussmann-Holder, Comes, Dzyaloshinskii, Egami, Friedel, Gonzalo, Hirsch, Höck, Jorgensen, Koike, Koyama, Koyama, Koyama, Labbe, Labbé, Labbé, Labbé, Maeno, markiewicz, Markiewicz, Markiewicz, Markiewicz, Müller, Newns, Pattnaik, Phillips, Pickett, Pouget, Pytte, Pytte, R.S. Markiewicz, Salje, Sato, Sera, Suzuki, Tagaki, Tindemans-van Eijndhoven, Toby   +42 more
core   +2 more sources

Instability mechanism and failure characteristics of underground cavern in block system under the action of seismic waves

Deep Underground Science and Engineering, EarlyView.
Seismic waves with tensile stress, high amplitude, and low frequency are most likely to trigger block instability and sliding. Blocks with a single sliding surface are more prone to movement than those with multiple constraints, and roof‐positioned blocks are especially vulnerable to slide.
Xiao Wang, Jinxiao Liu, Gaoshuo Zhang, Wenxin Li, Changdi He   +4 more
wiley   +1 more source

Lithospheric deformation in the Canadian Appalachians: evidence from shear wave splitting

, 2016
Plate-scale deformation is expected to impart seismic anisotropic fabrics on the lithosphere. Determination of the fast shear wave orientation (φ) and the delay time between the fast and slow split shear waves (δt) via SKS splitting can help place ...
A. Gilligan, I. Bastow, E. M. Watson, F. Darbyshire, V. Levin, W. Menke, V. Lane, David Hawthorn, A. Boyce, M. Liddell, L. Petrescu   +10 more
semanticscholar   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Shear Wave Splitting and Polarization in Anisotropic Fluid-Infiltrating Porous Media: A Numerical Study. [PDF]

Materials (Basel), 2020
De Marchi N, Sun W, Salomoni V.
europepmc   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source