Zobrazeno 1 - 10
of 471
pro vyhledávání: '"Eiji Ohtani"'
Publikováno v:
Progress in Earth and Planetary Science, Vol 11, Iss 1, Pp 1-9 (2024)
Abstract Water is transported into the deep mantle by subducting slabs, playing important roles in mantle dynamics and evolution. An aluminous hydrous mineral, phase δ with a main component of AlOOH, has been considered an important water carrier in
Externí odkaz:
https://doaj.org/article/108aecfa4d7044cebd88e5af2868cd48
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
New constraints on the composition of Earth’s inner core are provided by experimental verification of Birch’s law for hexagonal close-packed iron to pressure above 300 gigapascals, about double the pressure achieved in previous investigations
Externí odkaz:
https://doaj.org/article/2a9ef3a928664982bfa1934192ba01ba
Publikováno v:
Progress in Earth and Planetary Science, Vol 9, Iss 1, Pp 1-3 (2022)
Upper: Giant impact (Courtesy NASA/JPL-Caltech); chondrule, majorite in shocked enstatite (Courtesy Miyahara); Lower: Collision of planetesimals (Courtesy NASA/JPL-Caltech); Raman mapping of wadsleyite and ringwoodite in Peace River L6 (Courtesy Miya
Externí odkaz:
https://doaj.org/article/292a61408afb4483aafe3465916bcd76
Publikováno v:
Progress in Earth and Planetary Science, Vol 9, Iss 1, Pp 1-15 (2022)
Abstract Neumann band in iron meteorites, which is deformation twins in kamacite (Fe–Ni alloy), has been known to be a characteristic texture indicating ancient collisions on parent bodies of meteorites. We conducted a series of shock recovery expe
Externí odkaz:
https://doaj.org/article/2199b35aa30444379eb38923751ecc36
Publikováno v:
Communications Earth & Environment, Vol 2, Iss 1, Pp 1-10 (2021)
Abstract The Earth’s inner core comprises iron-nickel alloys with light elements. However, there is no clarity on the phase properties of these alloys. Here we show phase relations and equations of state of iron–nickel and iron–nickel–silicon
Externí odkaz:
https://doaj.org/article/a81ae512d1d344f1b937252081d55573
Autor:
Itaru Ohira, Jennifer M. Jackson, Wolfgang Sturhahn, Gregory J. Finkelstein, Takaaki Kawazoe, Thomas S. Toellner, Akio Suzuki, Eiji Ohtani
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
Abstract The high-pressure phases of oxyhydroxides (δ-AlOOH, ε-FeOOH, and their solid solution), candidate components of subducted slabs, have wide stability fields, thus potentially influencing volatile circulation and dynamics in the Earth’s lo
Externí odkaz:
https://doaj.org/article/14721f6976be4b5089995685175aa5d5
Autor:
Ryosuke Tanaka, Tatsuya Sakamaki, Eiji Ohtani, Hiroshi Fukui, Seiji Kamada, Akio Suzuki, Satoshi Tsutsui, Hiroshi Uchiyama, Alfred Q. R. Baron
Publikováno v:
Progress in Earth and Planetary Science, Vol 7, Iss 1, Pp 1-7 (2020)
Abstract The longitudinal sound velocity (V P ) and the density (ρ) of wüstite, FeO, were measured at pressures of up to 112.3 GPa and temperatures of up to 1700 K using both inelastic X-ray scattering and X-ray diffraction combined with a laser-he
Externí odkaz:
https://doaj.org/article/118e62cbe01946089df02a5ba00dc7db
Autor:
Wen‐Pin Hsieh, Takayuki Ishii, Keng‐Hsien Chao, Jun Tsuchiya, Frédéric Deschamps, Eiji Ohtani
Publikováno v:
Geophysical Research Letters, Vol 47, Iss 4, Pp n/a-n/a (2020)
Abstract Seismic anomalies observed in Earth's deep mantle are conventionally considered to be associated with thermal and compositional anomalies, and possibly partial melt of major lower‐mantle phases. However, through deep water cycle, impacts o
Externí odkaz:
https://doaj.org/article/ecd53f74298e4c83ac701a92e09be6e2
Publikováno v:
Progress in Earth and Planetary Science, Vol 4, Iss 1, Pp 1-11 (2017)
Abstract The phase and melting relations in the Fe–S–Si system were determined up to 60 GPa by using a double-sided laser-heated diamond anvil cell combined with X-ray diffraction. On the basis of the X-ray diffraction patterns, we confirmed that
Externí odkaz:
https://doaj.org/article/576a25538c984560a2f2d207ee8c2e9c
Autor:
Tomoo Katsura, Takayuki Ishii, Giacomo Criniti, Eiji Ohtani, Narangoo Purevjav, Hongzhan Fei, Ho-kwang Mao
The H2O incorporation into minerals changes the properties of minerals and rocks and affects the dynamics and evolution of the Earth’s interior. The higher H2O contents in plume-related magmas than in mid-oceanic ridge magmas suggest that deeper re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ade448b7dffdf64e360e2854921f35dc
https://doi.org/10.5194/egusphere-egu23-2770
https://doi.org/10.5194/egusphere-egu23-2770
