Results 81 to 90 of about 121 (99)

Primordial and 244Pu-derived xenon missing from Earth's convecting mantle

, 2023
Bekaert D, Caracausi A, Byrne DJ, Caro G, Broadley M, Barry P, Marty B, Seltzer A.   +7 more
europepmc   +1 more source

Ferromagnesian postperovskite silicates in the D'' layer of the Earth. [PDF]

Proc Natl Acad Sci U S A, 2004
Mao WL, Shen G, Prakapenka VB, Meng Y, Campbell AJ, Heinz DL, Shu J, Hemley RJ, Mao HK.   +8 more
europepmc   +1 more source

Seismological support for the metastable superplume model, sharp features, and phase changes within the lower mantle. [PDF]

Proc Natl Acad Sci U S A, 2007
Sun D, Tan E, Helmberger D, Gurnis M.
europepmc   +1 more source

Temperature profile in the lowermost mantle from seismological and mineral physics joint modeling. [PDF]

Proc Natl Acad Sci U S A, 2009
Kawai K, Tsuchiya T.
europepmc   +1 more source

Seismic low-velocity equatorial torus in the Earth's outer core: Evidence from the late-coda correlation wavefield. [PDF]

Sci Adv
Ma X, Tkalčić H.
europepmc   +1 more source

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The core–mantle boundary under the Gulf of Alaska: No ULVZ for shear waves

Earth and Planetary Science Letters, 2000
The Earth’s core^mantle boundary (CMB) marks the boundary between the hot, molten iron core and the silicate mantle and is a thermal, chemical, and flow boundary. Previous observations of very slow compressional wavespeeds suggest that thin ultra-low-velocity zones (ULVZs), possibly composed of a mixture of molten iron and silicates, exist at the base ...
Rob D Van Der Hilst
exaly   +2 more sources

Localized double-array stacking analysis of PcP: D″ and ULVZ structure beneath the Cocos plate, Mexico, central Pacific, and north Pacific

Physics of the Earth and Planetary Interiors, 2009
Abstract A large, high quality P-wave data set comprising short-period and broadband signals sampling four separate regions in the lowermost mantle beneath the Cocos plate, Mexico, the central Pacific, and the north Pacific is analyzed using regional one-dimensional double-array stacking and modelling with reflectivity synthetics.
Justin Revenaugh, Alexander Hutko
exaly   +2 more sources

Ulvz, Ultra‐Low Velocity Zone

2007
Ed J. Garnero, M. Thorne
exaly   +2 more sources

Ferric iron in bridgmanite and implications for ULVZs

Physics of the Earth and Planetary Interiors, 2020
Abstract The seismic velocities of ferric iron-enriched bridgmanite under core-mantle boundary (CMB) conditions were calculated using GGA + U ab initio molecular dynamics to probe whether ferric iron enriched mantle can explain the properties of ultra-low velocity zones (ULVZ). Under these conditions ferric iron demonstrated some unusual properties.
Joshua M.R. Muir, John P. Brodholt
openaire   +1 more source