KY
Member Since 2014
Kosuke Yabe
Post-doctoral researcher, The University of Tokyo, Japan
AGU Research
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Olivine Crystallographic Preferred Orientation (CPO) in Diffusion Creep and its Comparison to Mantle Peridotites
SEISMIC ANISOTROPY AND MANTLE DYNAMICS: OBSERVATIONS, MODELS, AND EXPERIMENTS III POSTER
study of earth's deep interior | 14 december 2023
NAHYEON KIM, Akihiro Ando, Kosuke Yabe, Takehiko H...
Olivine crystallographic preferred orientation (CPO) is a significant factor contributing to seismic anisotropy in the upper mantle. Recent studies in...
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Grain boundary chemistry and creep properties of olivine
FROM A SINGLE CRYSTAL ON UP: IN HONOR OF DAVID KOHLSTEDT'S CAREER II POSTER
mineral and rock physics | 13 december 2023
Takehiko Hiraga, NAHYEON KIM, Kosuke Yabe, Atsuro ...
Equilibrium Ca and Al grain boundary segregation has been known in olivine [1]. We synthesized fine-grained Fe-free and Fe-bearing olivine aggregates ...
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Grain growth-induced fabric transition
FROM GRAIN TO EARTH: UNDERSTANDING PLATE TECTONICS THROUGH ROCK MICROPHYSICS AND RECRYSTALLIZATION TO MANTLE-SCALE ANALYSES I ORAL
mineral and rock physics | 12 december 2023
Takehiko Hiraga, NAHYEON KIM, Kosuke Yabe
Many studies assume that olivine CPO results from dislocation processes; however, we have emphasized that CPO develops during diffusion creep dependin...
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Diffusion Creep Characteristics of Anorthite Revealed by Uniaxial and Pure Shear Deformation Experiments
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
24 february 2023
Kosuke Yabe, Takehiko Hiraga, Sanae Koizumi
Plagioclase, a major rock‐forming mineral in the Earth's crust, often shows microstructural evidence of ductile deformation in crustal rocks,...
Grain-boundary diffusion creep of olivine and its application to the oceanic upper mantle
BRIDGING THE OBSERVATIONAL GAP: INTEGRATING LABORATORY, FIELD, AND GEOPHYSICAL DATA SETS TO QUANTIFY MANTLE PROPERTIES AND PROCESSES I ORAL
study of earth's deep interior | 13 december 2022
Kosuke Yabe, Takehiko Hiraga
Recent findings that the crystallographically preferred orientation of olivine develops by diffusion creep under conditions corresponding to seismical...
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Olivine Morphology and Fabric During Diffusion Creep: Pure Shear Experiments
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
02 may 2022
Nahyeon Kim, Akihiro Ando, Kosuke Yabe, Takehiko H...
We deformed aggregates of Fe‐free olivine +20 vol% diopside in pure shear to study olivine grain morphology and fabric during diffusion creep...
Grain‐Boundary Diffusion Creep of Olivine: 1. Experiments at 1 atm
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
26 august 2020
Kosuke Yabe, Kenta Sueyoshi, Takehiko Hiraga
We conducted one‐atmosphere uniaxial compression experiments on fine‐grained (~1 μm) Fe‐bearing olivine (Mg1.8Fe0.2SiO4...
Grain‐Boundary Diffusion Creep of Olivine: 2. Solidus Effects and Consequences for the Viscosity of the Oceanic Upper Mantle
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
26 august 2020
Kosuke Yabe, Takehiko Hiraga
In Part 1 of this study (Yabe et al., 2020, https://doi.org/10.1029/2020JB019415), we established an olivine grain‐boundary diffusion creep l...