Last Update 12/30 2010
Research: Publications: T. Koyaguchi, Magma mixing in a conduit., J. Volcanol. Geothem. Res., 25, 365--369, 1985. T. Koyaguchi, Life-time of a stratified magma chamber recorded in ultramafic xenoliths from Ichinomegata volcano, northeastern Japan., Bull. Volcanology, 48, 313--323, 1986. T. Koyaguchi, Evidence for two-stage mixing in magmatic inclusions and rhyolitic lava domes on Niijima Island, Japan., J. Volcanol. Geothem. Res., 29, 71--98, 1986. T. Koyaguchi , Magma mixing in a squeezed conduit., Earth Planet. Sci. Lett., 84, 339--344, 1987. T. Koyaguchi and S. Blake, The dynamics of magma mixing in a rising magma batch., Bull. Volcanology, 52, 127--137, 1989. T. Koyaguchi, Chemical gradient at diffusive interface in magma chambers., Contrib. Mineral. Petrol., 103, 143--152, 1989. T. Koyaguchi, M. A. Hallworth, H. E. Huppert and R. S. J. Sparks, Sedimentation of particle from a convecting fluid., Nature, 343, 447--450, 1990. T. Koyaguchi and M. Tokuno , Origin of the giant eruption cloud of Pinatubo, June, 1991., J. Volcanol. Geotherm. Res., 55, 85--96, 1993. T. Koyaguchi, M. A. Hallworth and H. E. Huppert, An experimental study on the effects of phenocrysts on convection in magmas., J. Volcanol. Geotherm. Res., 55, 15--32, 1993. A.W. Woods and T. Koyaguchi, Transitions between explosive and effusive eruptions of silicic magmas., Nature, 307, 641--644, 1994. T. Koyaguchi, Grain-size variation of the tephra derived from umbrella clouds., Bull. Volcanol., 56, 1--9, 1994. T. Koyaguchi and A. Takada, An experimental study on the formation of composite intrusions from zoned magma chambers., J. Volcanol. Geotherm. Res., 59, 261--267, 1994. T.Koyaguchi, Volume estimation of the ejecta of Pinatubo 1991 eruption by means of fluid dynamics model and geological methods., Fire and Mud, Monograph of the Pinatubo 1991eruption, 583--600, 1996. T. Koyaguchi and A.W. Woods , On the formation of eruption columns following explosive mixing of magma and surface-water. , J. Geophys. Res., 23, 5561--5574, 1996. S. Yoshida and T. Koyaguchi, A new regime of volcanic eruption due to the relative motion between liquid and gas., J. Volcanol. Geotherm. Res., 89, 303--315, 1999. T. Koyaguchi and K. Kaneko, A two-stage thermal evolution model of magma in continental crusts., J. Petrol., 40, 2, 241--254, 1999. T. Koyaguchi and M. Ohno, Reconstruction of eruption column dynamics on the basis of grain-size of tephra-fall deposits: Part 1. Methods., J. Geophys. Res., 106, 6499--6512, 2001. T. Koyaguchi and M. Ohno, Reconstruction of eruption column dynamics on the basis of grain-size of tephra-fall deposits: Part 2. Application to the Pinatubo 1991 eruptions., J. Geophys. Res., 106, 6513--6533, 2001. T. Koyaguchi and N. K. Mitani, A theoretical model for fragmentation of viscous bubbly magmas in shock tubes, J. Geophys. Res., 110, doi:10.102, , 2005. T. Koyaguchi, An analytical study for 1-dimensional steady flow in volcanic conduits, J. Volcanol. Geotherm. Res., 143, 29--52, 2005. Nakanishi, M. and T. Koyaguchi, A stability analysis of a conduit flow model for lava dome eruptions., J. Volcanol. Geotherm. Res., 178, 46--57, 2008. Koyaguchi, T., B. Scheu, N. K. Mitani and O. Melnik, A fragmentation criterion for highly viscous bubbly magmas estimated from shock tube experiments, J. Volcanol. Geotherm. Res., 178, 58--71, 2008. Kozono, T. and T. Koyaguchi, Effects of relative motion between gas and liquid on 1-dimensional steady flow in silicic volcanic conduits: 1. an analytical method, J. Volcanol. Geotherm. Res., 180, 21--36, 2009. Kozono, T. and T. Koyaguchi, Effects of relative motion between gas and liquid on 1-dimensional steady flow in silicic volcanic conduits: 2. origin of diversity of eruption styles, J. Volcanol. Geotherm. Res., 180, 37--49, 2009. Suzuki, Y. J. and T. Koyaguchi, A three-dimensional numerical simulation of spreading umbrella clouds, J. Geophys. Res., 114, B03209, doi:10.102, , 2009. Koyaguchi, T., K. Ochiai and Y. J. Suzuki, The effect of intensity of turbulence in umbrella cloud on tephra dispersion during explosive volcanic eruptions: Experimental and numerical approaches, J. Volcanol. Geotherm. Res., 186, 68--78, 2009. Koyaguchi, T., Y. J. Suzuki and T. Kozono, Effects of the crater on eruption column dynamics, J. Geophys. Res., 115, B07205, doi:10.1029/2009JB007146, , 2010. 小屋口剛博, 火山と噴火のダイナミックス，「地球惑星科学 第8巻 （平朝彦・末広潔・廣井美邦・巽好幸・高橋正樹・小屋口剛博・嶋本利彦 共著）」, 岩波書店, 1997. 小屋口剛博, 火山現象のモデリング, 東京大学出版会, 2008. |
