Results 31 to 40 of about 1,343,718 (191)

Influence of inner core rotation and obliquity on the inner core wobble and the free inner core nutation [PDF]

Geophysical Research Letters, 2002
The inner core wobble and the free inner core nutation are studied. A simple Earth model is adopted to derive all the results analytically. As new results over earlier work, the formulas of the frequencies of these two modes taking into account of the rotation rate and the obliquity of the inner core relative to the mantle are obtained. The formula for
Jun‐Yi Guo, Jin‐Sheng Ning
openaire   +1 more source

Iron Hydride in the Earth's Inner Core and Its Geophysical Implications

Geochemistry, Geophysics, Geosystems, 2022
Hydrogen is potentially a key light element in the Earth's core. Determining the stability of iron hydride is essential for Earth's core mineralogy applications.
Hua Yang, Joshua M. R. Muir, Feiwu Zhang
doaj   +1 more source

Can the Earth's dynamo run on heat alone? [PDF]

, 2003
The power required to drive the geodynamo places significant constraints on the heat passing across the core-mantle boundary and the Earth's thermal history. Calculations to date have been limited by inaccuracies in the properties of liquid iron mixtures
Alfè, Alfè, Dario Alfè, David Gubbins, de Wijs, Frenkel, G. David Price, Glatzmaier, Guy Masters, Kuang, M. J. Gillan, Poirier, Roberts   +12 more
core   +1 more source

Phase relations of Fe‐Si alloy up to core conditions: Implications for the Earth inner core

Geophysical Research Letters, 2008
X‐ray diffraction experiments were conducted to 257 GPa and high temperature in situ on an iron‐silicon alloy containing 3.4 wt% silicon, a candidate for the Earth's inner core forming material.
Hidetoshi Asanuma, Eiji Ohtani, Takeshi Sakai, Hidenori Terasaki, Seiji Kamada, Naohisa Hirao, Nagayoshi Sata, Yasuo Ohishi   +7 more
doaj   +1 more source

On the existence and structure of a mush at the inner core boundary of the Earth [PDF]

, 2007
It has been suggested about 20 years ago that the liquid close to the inner core boundary (ICB) is supercooled and that a sizable mushy layer has developed during the growth of the inner core.
Alfè, Anderson, Anderson, Bergman, Bergman, Boehler, Boehler, Braginsky, Buffett, Buffett, Bulau, Cao, Chalmers, Christensen, Coriell, D. Brito, Davis, Dziewonski, Favier, Fearn, Gubbins, Hunt, Jacobs, Knittle, Kurz, Labrosse, Laio, Langer, Le Bars, Loper, Loper, Morse, Morse, Mullins, Nimmo, Poirier, Poirier, R. Deguen, Ringwood, Sherman, Shimizu, Stacey, Stevenson, Stixrude, Sumita, T. Alboussière, Trivedi, Vočadlo, Vočadlo, Wen, Williams, Yoshida, Yukutake   +52 more
core   +6 more sources

The separation of the geomagnetic field originated in the core, in the asthenosphere, and in the crust

Annals of Geophysics, 1999
The separation of the field produced by different internal sources can be accomplished by means of the so-called spatial spectrum of the geomagnetic field of internal origin.
X. Q. Gao, F. T. Gizzi, W. J. Dong, G. P. Gregori   +3 more
doaj   +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

Implication of the lopsided growth for the viscosity of Earth's inner core [PDF]

, 2012
Two main seismic features characterize the Earth's inner core: a North-South polar anisotropy and an East-West asymmetry of P-wave velocity and attenuation. Anisotropy is expected if shear deformation is induced by convective motions.
Alboussiere, Alfe, Amit, Anderson, Aubert, Bergman, Buffett, Buffett, Calvet, Christensen, de Koker, Deguen, Deguen, Deguen, Deguen, Deuss, Dziewonski, Finlay, Gubbins, Hugau Mizzon, Jaupart, Jeanloz, Labrosse, Marc Monnereau, McKenzie, Monnereau, Monnereau, Monnereau, Poirier, Poupinet, Pozzo, Schubert, Stacey, Tanaka, Vočadlo, Weber, Yoshida   +36 more
core   +3 more sources

Very Slow Rotation of Earth's Inner Core From 1971 to 1974

Geophysical Research Letters, 2019
The rate that Earth's inner core rotates relative to the mantle and crust has been debated for decades. Nonrotational processes, including internal deformation and flow in the outer core, have also been proposed to explain observed seismic changes.
John E. Vidale
doaj   +1 more source

Galactic halo cusp-core: tidal compression in mergers [PDF]

, 2002
We explain in simple terms how the buildup of dark haloes by merging compact satellites, as in the CDM cosmology, inevitably leads to an inner cusp of density profile $\rho \propto r^{-\alpha}$ with $\alpha \gsim 1$, as seen in cosmological N-body ...
Adelberger, Alvarez, Avila-Reese, Avishai Dekel, Barnes, Binney, Bode, Borriello, Bullock, Bullock, Bullock, Bullock, Cole, Dave, de Blok, Dekel, Dekel, Dekel, El-Zant, Geyer, Ghigna, Ghigna, Gnedin, Gnedin, Governato, Guy Hetzroni, Hayashi, Hennawi, Hogan, Huss, Jonathan Devor, Klypin, Klypin, Klypin, Klypin, Kochanek, Lokas, Maller, Maller, Marchesini, Merritt, Mihos, Moore, Moore, Moore, Navarro, Navarro, Navarro, Navarro, Navarro, Nusser, Pearce, Power, Salucci, Salucci, Scannapieco, Scannapieco, Sellwood, Silk, Somerville, Spergel, Spitzer, Springel, Subramanian, Syer, Taylor, Tully, van den Bosch, van den Bosch, Weinberg, Zhao   +70 more
core   +3 more sources