Results 81 to 90 of about 27,412 (233)

Numerical constraints on the model of stochastic excitation of solar-type oscillations

, 2003
Analyses of a 3D simulation of the upper layers of a solar convective envelope provide constraints on the physical quantities which enter the theoretical formulation of a stochastic excitation model of solar p modes, for instance the convective ...
Goupil, M. J., Nordlund, A., Roxburgh, I., Samadi, R., Stein, R. F.   +4 more
core   +1 more source

Seismic anisotropy in western Tibet

Geophysical Research Letters, 2005
Teleseismic SKS data collected by a temporary broadband array across western Tibet are analysed to constrain shear‐wave splitting parameters. Small delay anisotropy is detected, with a rotation of the fast axis azimuth from 40°E in the Tarim basin west of Yecheng to more easterly values between Hotien and Shiquanhe.
Georges Herquel, Paul Tapponnier
openaire   +1 more source

Anisotropy of permeability, P-wave velocity and electrical resistivity of Upper Cretaceous carbonate samples from Tushka Area, Western Desert, Egypt

Egyptian Journal of Petroleum, 2019
Petrophysical properties (such as porosity, permeability, grain density, bulk density, electrical resistivity, and P-wave velocity), as well as the anisotropy of the permeability, seismic velocity (P-wave velocity) and electrical resistivity were ...
Mohamed A. Kassab, Andreas Weller
doaj   +1 more source

Rupture by damage accumulation in rocks [PDF]

, 2006
The deformation of rocks is associated with microcracks nucleation and propagation, i.e. damage. The accumulation of damage and its spatial localization lead to the creation of a macroscale discontinuity, so-called "fault" in geological terms, and to the
A Buchel, A Guarino, A Johansen, A Lin, AM Boullier, B Gutenberg, B Menendez, B Velde, C Marone, C Nicholson, C Scavia, CA Tang, CA Tang, CAJ Wibberley, CG Bufe, CG Sammis, CH Scholz, CH Scholz, D Amitrano, D Place, D Sornette, DA Lockner, DA Lockner, DA Lockner, David Amitrano, DE Moore, E Bouchaud, E Bouchaud, EM Schulson, F Kun, GCP King, H Nechad, HL Li, IG Main, J Biarez, J Kemeny, J Mori, J Rice, J Schmittbuhl, J Schmittbuhl, J Weiss, J Weiss, JC Jaeger, JVA Keller, JW Rudnicki, K Chen, K Mair, K Michibayashi, K Mogi, LS Costin, M Gerstenberger, P Cowie, P Grassberger, RL Kranz, RP Young, S Zapperi, S Zapperi, SC Jaume, SJD Cox, SR Brown, T Hirata, W Wang, YC Wang, Z Olami, Z Reches   +64 more
core   +4 more sources

Achieving Functionality Targets for Seismically Isolated Steel Buildings Using Gaussian Process Modeling

Earthquake Spectra, Volume 42, Issue 2, May 2026.
As seismic design paradigms shift toward functional recovery, there is a need for efficient methods to achieve desired decision variables (DVs), such as probability of replacement, repair cost, and downtime of the building, for seismically isolated buildings.
Huy G. Pham, Tracy C. Becker
wiley   +1 more source

Physical Properties of Iron in the Inner Core

, 2002
The Earth's inner core plays a vital role in the dynamics of our planet and is itself strongly exposed to dynamic processes as evidenced by a complex pattern of elastic structure.
Ahrens, Alfè, Alfè, Alfè, Alfè, Alfè, Alfè, Anderson, Anderson, Andrault, Asada, Aurnou, Barron, Bergman, Bergman, Bergman, Birch, Birch, Boehler, Boehler, Boehler, Braginsky, Brown, Brown, Brown, Brown, Brown, Brown, Bréger, Buffett, Buffett, Buffett, Buffett, Buffett, Buffett, Buffett, Bullen, Bullen, Clement, Cohen, Cohen, Cohen, Creager, Creager, Creager, Creager, Davies, de Wijs, Deuss, Dubrovinsky, Dubrovinsky, Duffy, Duffy, Dziewonski, Dziewonski, Eckerlin, Fiquet, Funamori, Glatzmaier, Glatzmaier, Gülseren, Hemley, Hill, Hohenberg, Hollerbach, Huang, Ishii, Ishii, Ito, Jackson, Jeanloz, Jeanloz, Jeanloz, Jeanloz, Jeanloz, Jephcoat, Jephcoat, Karato, Karato, Karato, Kohn, Kuang, Körling, Laio, Laske, Lehmann, Li, Lubbers, Lundqvist, Manghnani, Mao, Mao, Mao, Masters, Masters, Matsui, Matthies, Maurer, McMahon, Merkel, Merrill, Morelli, Moroni, Nguyen, Nielsen, Niu, Okal, Okuchi, Olijnyk, Olijnyk, Parrinello, Perdew, Pickett, Poirier, Poirier, Poupinet, Saxena, Shearer, Shen, Shen, Simmons, Singh, Singh, Singh, Singh, Song, Song, Song, Song, Song, Souriau, Stacey, Steinle-Neumann, Steinle-Neumann, Stixrude, Stixrude, Stixrude, Stixrude, Stixrude, Stixrude, Su, Su, Söderlind, Tanaka, Taylor, Tromp, Tromp, Troullier, Tsunoda, Uchida, Uhl, Verhoogen, Verhoogen, Vidale, Vočadlo, Wasserman, Watt, Wenk, Wenk, Wenk, Wentzcovitch, Williams, Woodhouse, Yagi, Yoo, Yoo, Yoshida, Yukutake, Yukutake   +168 more
core   +1 more source

Shear wave structure of a transect of the Los Angeles basin from multimode surface waves and H/V spectral ratio analysis [PDF]

, 2020
We use broad-band stations of the ‘Los Angeles Syncline Seismic Interferometry Experiment’ (LASSIE) to perform a joint inversion of the Horizontal to Vertical spectral ratios (H/V) and multimode dispersion curves (phase and group velocity) for both ...
Beroza, Gregory C., Clayton, Robert W., Perton, Mathieu, Spica, Zack J.   +3 more
core  

Elastic properties of silicate melts: Implications for low velocity zones at the lithosphere-asthenosphere boundary. [PDF]

, 2017
Low seismic velocity regions in the mantle and crust are commonly attributed to the presence of silicate melts. Determining melt volume and geometric distribution is fundamental to understanding planetary dynamics.
Clark, Alisha N, Lesher, Charles E
core   +2 more sources

Sulfur‐Bearing hcp Iron for Earth's Inner Core

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Earth's iron core is believed to contain light impurities which should have been included during core formation. In order to place constraints on core composition, here we report the effect of sulfur on density of hexagonal close‐packed (hcp) iron which was not previously examined, using laser‐heated diamond anvil cells with in situ ...
Emiko Sugimura‐Komabayashi, Samuel Thompson, Tetsuya Komabayashi, Damien Freitas, Mark Robertson, Nico Giordano, Anna Pakhomova, Hanns‐Peter Liermann   +7 more
wiley   +1 more source

Seismic anisotropy of Precambrian lithosphere : Insights from Rayleigh wave tomography of the eastern Superior Craton [PDF]

, 2017
The seismic data used in this study are freely available from the CNDC (Canadian National Data Centre for Earthquake Seismology and Nuclear Explosion Monitoring) and IRIS DMC (Data Management Center) via their data request tools.
Lee S., Nolet G., Sato Y., Snieder R., Vinnik L., Wardle R. J.   +5 more
core   +2 more sources