氏名武井(小屋口) 康子
職名准教授
所属物質科学系研究部門
専門固体地球科学

最終更新日 11/06 2014

研究内容

岩石の力学物性が地球内部ダイナミクスにどのように影響を与えているかに興味があります。特に、メルトや水を含んだ固液二相系では、液相のミクロな形状が系の力学物性を大きく変えるため、ミクロな形状とマクロなダイナミクスの相互作用が生じます。固液二相系のミクロなふるまいを調べる室内実験と、そのダイナミクスへの影響を調べる研究を行っています。実際の地球の内部の液相の状態を地震波観測から調べるために、液相が地震波特性に与える影響も研究しています。液相と並んで地震波の低速度・高減衰の原因となる岩石非弾性には未知の部分が多いため、岩石非弾性の研究にも力を入れています。

主要論文・著書

Yasuko Takei and Mineo Kumazawa, Why have the single force and torque been excluded from seismic source models?, Geophys. J. Int., 118, 20--30, 1994.

Yasuko Takei, Constitutive mechanical relations of solid-liquid composites in terms of grain-boundary contiguity, J. Geophys. Res., 103, 18183--18203, 1998.

Yasuko Takei, Acoustic properties of partially molten media studied on a simple binary system with a controllable dihedral angle., J. Geophys. Res., 105, B7, 16665--16682, 2000.

Yasuko Takei, Stress-induced anisotropy of partially molten media inferred fromexperimental deformation of a simple binary system under acoustic monitoring, J. Geophys. Res., 106, B1, 567--588, 2001.

Yasuko Takei, Effect of pore geometry on Vp/Vs: From equilibrium geometry to crack, J. Geophys. Res., 107, B2, ECV6-1--ECV6-12, 2002.

Yasuko Takei and Ichiko Shimizu, The effects of liquid composition, temperature, and pressure on the equilibrium dihedral angles of binary solid-liquid systems inferred from a lattice-like model., Phys. Earth Planet. Inter., 139, 225--242, 2003.

Nakajima, J., Y. Takei, and A. Hasegawa, Quantitative analysis of the inclined low-velocity zone in the mantle wedge of northeastern Japan: A systematic change of melt-filled pore shape with depth and its implications for melt migration, , Earth Planet. Sci. Lett., 234, 59--70, 2005.

Yasuko Takei, Deformation-induced grain boundary wetting and its effects on the acoustic and rheological properties of partially moltenrock analogue, J. Geophys. Res., 110, B12203, do, , 2005.

Yasuko Takei and Benjamin K. Holtzman, Viscous constitutive relations of solid-liquid composites in terms of grain boundary contiguity: 2. Compositional model for small melt fractions, , J. Geophys. Res., 114, B06206, doi:10.1029/2008JB005851, , 2009.

Yasuko Takei and Benjamin K. Holtzman, , Viscous constitutive relations of solid-liquid composites in terms of grain boundary contiguity: 3. Causes and consequences of viscous anisotropy, , J. Geophys. Res., 114, B06206, doi:10.1029/2008JB005852, , 2009.

Yasuko Takei and Benjamin K. Holtzman, Viscous constitutive relations of solid-liquid composites in terms of grain boundary contiguity: 1. Grain boundary diffusion control model, J. Geophys. Res., 114, B06206, doi:10.1029/2008JB005850, , 2009.

Yasuko Takei, Stress-induced anisotropy of partially molten rock analogue deformed under quasi-static loading test , J. Geophys. Res. , 115, B03204, doi:10.1029/2009JB006568, , 2010.

Takei, Yasuko; Fujisawa, Kazuhiro; McCarthy, Christine, Experimental study of attenuation and dispersion over a broad frequency range: 1. The apparatus, J. Geophys. Res., 116, B09, B09204, doi:10.1029/2011JB008382, , 2011.

McCarthy, Christine, Takei, Yasuko, Hiraga Takehiko, Experimental study of attenuation and dispersion over a broad frequency range: 2. The universal scaling of polycrystalline materials , J. Geophys. Res., 116, B09207, doi:10.1029/2011JB008384 , , 2011.

McCarthy, Christine; Takei, Yasuko, Anelasticity and viscosity of partially molten rock analogue: Toward seismic detection of small quantities of melt, Geophys. Res. Lett., 38, L18306, doi:10.1029/2011GL048776., , 2011.

Yasuko Takei and Richard Katz , Consequences of viscous anisotropy in a deforming, two-phase aggregate. Part 1. Governing equations and linearized analysis, Journal of Fluid Mechanics , 734, November, 424--455, 2013.

Richard Katz and Yasuko Takei, Consequences of viscous anisotropy in a deforming, two-phase aggregate. Part 2. Numerical solutions of the full equations, Journal of Fluid Mechanics , 734, November, 456--485, 2013.

Yasuko Takei, Fumiya Karasawa, Hatsuki Yamauchi, Temperature, grain size, and chemical controls on polycrystal anelasticity over a broad frequency range extending into the seismic range, J. Geophys. Res., 119, doi:10.1002/2014JB011146, , 2014.