Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Kazuhiko Otsuka"'
Autor:
Shun-ichiro Karato, Kazuhiko Otsuka
Publikováno v:
Physics and Chemistry of Minerals. 42:261-273
Both ferric iron (Fe3+) and hydrogen (H+) have important influence on several transport properties of minerals such as diffusion. We determined the influence of Fe3+ and H+ on Fe–Mg interdiffusion in (Mg,Fe)O at 1,673–1,873 K and 5–24 GPa under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9b70170934531bca496a1a8d513ebde
https://doi.org/10.1007/s00269-014-0717-6
https://doi.org/10.1007/s00269-014-0717-6
Publikováno v:
Physics of the Earth and Planetary Interiors. 228:244-253
High shear strain deformation experiments up to equivalent strains of 180% were performed on ringwoodite at conditions of 23 GPa and 1800 K. At very large shear strains, deviation in the strengths of the (3 1 1) and (4 0 0) lattice planes is observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2399d8d29a95b314901e5933a78fcad0
https://doi.org/10.1016/j.pepi.2013.09.012
https://doi.org/10.1016/j.pepi.2013.09.012
Autor:
Gakushi Ishimura, Kristin M. Kleisner, Keita Abe, Rod Fujita, Kanae Tokunaga, Kazuhiko Otsuka, Shigehide Iwata
Publikováno v:
Marine Policy. 108:103646
Japanese fisheries are underperforming, with stock declines in some key domestic fisheries. This study examines tradeoffs between allowing current fishing mortality levels to continue versus adopting fishing mortality levels that are intended to maxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee29568acf42c9166342829d82acf944
https://doi.org/10.1016/j.marpol.2019.103646
https://doi.org/10.1016/j.marpol.2019.103646
Publikováno v:
Earth and Planetary Science Letters. 365:7-16
We investigated the ferric iron (Fe 3+ ) concentration in (Mg,Fe)O ferropericlase using the flank method applied to Mg–Fe interdiffusion couples of ferropericlase. Diffusion couples with Mg/(Mg+Fe) in the range 0.44 to 1 were annealed at temperatur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::045e45037b5eda806c16da63e66d8fdd
https://doi.org/10.1016/j.epsl.2012.11.030
https://doi.org/10.1016/j.epsl.2012.11.030
Autor:
Zhicheng Jing, J. W. Hustoft, G. Amulele, Shun-ichiro Karato, Kazuhiko Otsuka, Jun-ichi Ando, Zhixue Du
Publikováno v:
Earth and Planetary Science Letters. 361:7-15
We report the results of plastic deformation experiments on polycrystalline wadsleyite and ringwoodite performed at 15–23 GPa and 1300–2100 K conducted using the rotational Drickamer apparatus (RDA). Wadsleyite was synthesized from fine-grained (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fafb753326adb6943816b7472151dd32
https://doi.org/10.1016/j.epsl.2012.11.028
https://doi.org/10.1016/j.epsl.2012.11.028
Autor:
Kazuhiko Otsuka, Takayoshi Yamazaki, Todomu Nishino, Yasuteru Mawatari, Masayoshi Tabata, Hironori Nakashima, Yasushi Takenaka
Publikováno v:
KOBUNSHI RONBUNSHU. 69:274-282
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b32e4c5d4261c140857b81f1f62cf915
https://doi.org/10.1295/koron.69.274
https://doi.org/10.1295/koron.69.274
Autor:
Hidemi Ishibashi, Hiroaki Ohfuji, Naoto Hirano, Junji Yamamoto, Kazuhiko Otsuka, Hiroyuki Kagi
Publikováno v:
European Journal of Mineralogy. 23:805-815
To assess the capacity of fluid inclusions in mantle minerals for CO 2 retention, annealing experiments were conducted for two mantle xenoliths with CO 2 inclusions for 8 days at 1000 °C under atmospheric pressure and f O 2 of 10 −11 MPa. The resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cc1ee02373b624206c93bd1e11659cc
https://doi.org/10.1127/0935-1221/2011/0023-2150
https://doi.org/10.1127/0935-1221/2011/0023-2150
Autor:
Shun-ichiro Karato, Kazuhiko Otsuka
Publikováno v:
Physics of the Earth and Planetary Interiors. 189:27-33
A new method is developed to control water fugacity at a fixed pressure and temperature. We use two divariant phase assemblages (clinohumite–periclase–forsterite and brucite–periclase) in the MgO–SiO2–H2O system and the chemical reactions a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13e68784f3e61150bb9ca25d4cc2c474
https://doi.org/10.1016/j.pepi.2011.09.007
https://doi.org/10.1016/j.pepi.2011.09.007
Publikováno v:
Physics of the Earth and Planetary Interiors. 180:179-188
We investigated the concentration and site occupation of ferric iron (Fe3+) in (Mg,Fe)O to understand the influence of point defects on transport properties such as atomic diffusion, electrical conductivity and viscosity. We conducted Mossbauer spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6fbc342a1410a5880bb888c061107a4
https://doi.org/10.1016/j.pepi.2009.10.005
https://doi.org/10.1016/j.pepi.2009.10.005
Publikováno v:
Physics of the Earth and Planetary Interiors. 174:128-137
Shear deformation experiments on dry hot-pressed polycrystalline San Carlos olivine have been conducted at 4.9–9.6 GPa, 1300–1870 K and strain rates of 0.6–7.4 × 10 −5 s −1 using a rotational Drickamer apparatus (RDA) at a synchrotron faci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b12f943b3be86ab0209eebfc6bd7d46
https://doi.org/10.1016/j.pepi.2008.06.027
https://doi.org/10.1016/j.pepi.2008.06.027