Researcher Database

KAMEYAMA, Masanori

FacultyGeodynamics Research Center
PositionProfessor
Last Updated :2019/11/12

Researcher Profile and Settings

Profile and Settings

Name

  • Name

    KAMEYAMA, Masanori

Profile & Settings

  • アバター画像URI

    https://researchmap.jp/?action=common_download_user&upload_id=107667
  • URL

  • ORCID ID

    0000-0003-1739-2242

Affiliations

Affiliation & Job

  • Section

    Geodynamics Research Center, Numerial Simulations Laboratory, Geodynamics Research Center
  • Job title

    Professor

Education, Etc.

Education

  • 1995/04 - 1998/03, The University of Tokyo, Graduate School of Science
  • 1993/04 - 1995/03, The University of Tokyo, Graduate School of Science
  • 1989/04 - 1993/03, The University of Tokyo, Faculty of Science

その他基本情報

Association Memberships

  • Seismological Society of Japan
  • The Japanese Society for Planetary Sciences
  • American Geophysical Union
  • The Visualization Society of Japan

Academic & Professional Experience

  • 2016/04 - Today, Professor, Ehime University
  • 2007/09 - 2016/03, Associate Professor, Ehime University
  • 2003/04 - 2007/08, Research Scientist, Japan Agency for Marine-Earth Science and Technologu

Research Activities

Research Areas, Etc.

Research Areas

  • Earth and planetary science, Solid earth and planetary physics

Research Interests

  • mantle convection
  • numerical simulation

Book, papers, etc

Published Papers

  • Effects of adiabatic compression on thermal convection in super-Earths of various sizes, MIYAGOSHI Takehiro, KAMEYAMA Masanori, OGAWA Masaki, Earth, Planets and Space, 2018/12, [Refereed], 10.1186/s40623-018-0975-5
  • Numerical experiments on thermal convection of highly compressible fluids with variable viscosity and thermal conductivity: Implications for mantle convection of super-Earths, Masanori Kameyama, Mayumi Yamamoto, Physics of the Earth and Planetary Interiors, 2018/01, [Refereed], 10.1016/j.pepi.2017.11.001
  • Supercontinent cycle and thermochemical structure in the mantle: Inference from two-dimensional numerical simulations of mantle convection, Masanori Kameyama, Akari Harada, Geosciences, 2017/12, [Refereed], 10.3390/geosciences7040126
  • Extremely long transition phase of thermal convection in the mantle of massive super-Earths, Takehiro Miyagoshi, Masanori Kameyama and Masaki Ogawa, Earth, Planets and Space, 2017/03, [Refereed], 10.1186/s40623-017-0630-6
  • Numerical studies on convective stability and flow pattern in three-dimensional spherical mantle of terrestrial planets, Takatoshi Yanagisawa, Masanori Kameyama, Masaki Ogawa, Geophysical Journal International, 2016/09, [Refereed], 10.1093/gji/ggw226
  • Estimate of subduction rate of island arcs to the deep mantle, Hiroki Ichikawa, Shinji Yamamoto, Kenji Kawai and Masanori Kameyama, Journal of Geophysical Research: Solid Earth, 2016/07, [Refereed], 10.1002/2016JB013119
  • Linear analysis on the onset of thermal convection of highly compressible fluids with variable physical properties: Implications for the mantle convection of super-Earths, Masanori Kameyama, Geophysical Journal International, 2016/01, [Refereed], 0956540X, 10.1093/gji/ggv507
  • Thermal convection and the convective regime diagram in super-Earths, Takehiro Miyagoshi, Masanori Kameyama, Masaki Ogawa, Journal of Geophysical Research E: Planets, 2015/07, [Refereed], 21699097, 10.1002/2015JE004793
  • Effect of water on subduction of continental materials to the deep Earth, Hiroki Ichikawa, Kenji Kawai, Shinji Yamamoto, and Masanori Kameyama, The Earth's heterogeneous mantle: A Geophysical, Geodynamical, and Geochemical Perspective, 2015/04, [Refereed], 10.1007/978-3-319-15627-9_9
  • Linear analysis on the onset of thermal convection of highly compressible fluids: Implications for the mantle convection of super-Earths, Masanori Kameyama, Takehiro Miyagoshi and Masaki Ogawa, Geophysical Journal International, 2015/02, [Refereed], 10.1093/gji/ggu457
  • Influence of majorite on hot plumes, Hiroki Ichikawa, Hiroki Ichikawa, Masanori Kameyama, Hiroki Senshu, Kenji Kawai, Shigenori Maruyama, Geophysical Research Letters, 2014/11, [Refereed], 00948276, 10.1002/2014GL061477
  • Thermal convection of compressible fluid in the mantle of super-Earths, Chihiro Tachinami, Masaki Ogawa, Masanori Kameyama, Icarus, 2014/03, [Refereed], 00191035, 10.1016/j.icarus.2013.12.022
  • On the vigor of mantle convection in super-earths, Takehiro Miyagoshi, Chihiro Tachinami, Masanori Kameyama, Masaki Ogawa, Astrophysical Journal Letters, 2014/01, [Refereed], 20418205, 10.1088/2041-8205/780/1/L8
  • Linear stability analysis on the influences of the spatial variations in thermal conductivity and expansivity on the flow patterns of thermal convection with strongly temperature-dependent viscosity, Arata Miyauchi, Masanori Kameyama, Hiroki Ichikawa, Journal of Earth Science, 2014/01, [Refereed], 1674487X, 10.1007/s12583-014-0405-y
  • On the stability of thermal stratification of highly compressible fluids with depth-dependent physical properties: Implications for the mantle convection of super-earths, Masanori Kameyama, Yuya Kinoshita, Geophysical Journal International, 2013/12, [Refereed], 0956540X, 10.1093/gji/ggt321
  • Mantle convection with continental drift and heat source around the mantle transition zone, Hiroki Ichikawa, Masanori Kameyama, Kenji Kawai, Kenji Kawai, Gondwana Research, 2013/11, [Refereed], 1342937X, 10.1016/j.gr.2013.02.001
  • Influences of the depth-dependence of thermal conductivity and expansivity on thermal convection with temperature-dependent viscosity, Arata Miyauchi, Masanori Kameyama, Physics of the Earth and Planetary Interiors, 2013/10, [Refereed], 00319201, 10.1016/j.pepi.2013.08.001
  • Supply rate of continental materials to the deep mantle through subduction channels, Hiroki Ichikawa, Kenji Kawai, Shinji Yamamoto, Masanori Kameyama, Tectonophysics, 2013/04, [Refereed], 00401951, 10.1016/j.tecto.2013.02.001
  • A linear stability analysis on the onset of thermal convection of a fluid with strongly temperature-dependent viscosity in a spherical shell, Masanori Kameyama, Hiroki Ichikawa, Arata Miyauchi, Theoretical and Computational Fluid Dynamics, 2013/02, [Refereed], 09354964, 10.1007/s00162-011-0250-x
  • Generation of ascending flows in the Big Mantle Wedge (BMW) beneath northeast Asia induced by retreat and stagnation of subducted slab, Masanori Kameyama, Ryoko Nishioka, Geophysical Research Letters, 2012/05, [Refereed], 00948276, 10.1029/2012GL051678
  • Geological record of thermal pressurization and earthquake instability of subduction thrusts, Kohtaro Ujiie, Masanori Kameyama, Asuka Yamaguchi, Tectonophysics, 2010/04, [Refereed], 00401951, 10.1016/j.tecto.2010.01.002
  • A community benchmark for 2-D Cartesian compressible convection in the Earth's mantle, Scott D. King, Changyeol Lee, Peter E. van Keken, Wei Leng, Shijie Zhong, Eh Tan, Nicola Tosi, Nicola Tosi, Masanori C. Kameyama, Geophysical Journal International, 2010/01, [Refereed], 0956540X, 10.1111/j.1365-246X.2009.04413.x
  • Validity test of a Stokes flow solver by fluid rope coiling: Toward plate-mantle simulation, Mikito Furuichi, Masanori Kameyama, Akira Kageyama, Physics of the Earth and Planetary Interiors, 2009/09, [Refereed], 00319201, 10.1016/j.pepi.2009.03.014
  • Multigrid-based simulation code for mantle convection in spherical shell using Yin-Yang grid, Masanori Kameyama, Akira Kageyama, Tetsuya Sato, Physics of the Earth and Planetary Interiors, 2008/12, [Refereed], 00319201, 10.1016/j.pepi.2008.06.025
  • Ubiquitous interactive visualization of 3D mantle convection using a web-portal with Java and Ajax framework, James B S G Greensky, Wojciech Walter Czech, David A. Yuen, Michael Richard Knox, Megan Rose Damon, Shi Steve Chen, M. Charley Kameyama, Visual Geosciences, 2008/06, [Refereed], 16102924, 10.1007/s10069-008-0013-z
  • Three-dimensional Eulerian method for large deformation of viscoelastic fluid: Toward plate-mantle simulation, Mikito Furuichi, Masanori Kameyama, Akira Kageyama, Journal of Computational Physics, 2008/05, [Refereed], 00219991, 10.1016/j.jcp.2008.01.052
  • Interactive visualization of 3D mantle convection, Megan Damon, Masanori C. Kameyama, Michael Knox, David H. Porter, Dave Yuen, Erik O D Sevre, Visual Geosciences, 2008/01, [Refereed], 16102924, 10.1007/s10069-007-0008-1
  • Dynamics of superplumes in the lower mantle, David A. Yuen, Marc Monnereau, Ulrich Hansen, Masanori Kameyama, Ctirad Matyska, Superplumes: Beyond Plate Tectonics, 2007/12, [Refereed], 10.1007/978-1-4020-5750-2_9
  • Thermal maturity of a fold-thrust belt based on vitrinite reflectance analysis in the Western Foothills complex, western Taiwan, Arito Sakaguchi, Akiko Yanagihara, Kohtaro Ujiie, Hidemi Tanaka, Masanori Kameyama, Tectonophysics, 2007/10, [Refereed], 00401951, 10.1016/j.tecto.2007.01.017
  • The role of history-dependent rheology in plate boundary lubrication for generating one-sided subduction, Michio Tagawa, Tomoeki Nakakuki, Masanori Kameyama, Fumiko Tajima, Pure and Applied Geophysics, 2007/05, [Refereed], 00334553, 10.1007/s00024-007-0197-4
  • The Dynamical Influences from Physical Properties in the Lower Mantle and Post-Perovskite Phase Transition, David A. Yuen, Ctirad Matyska, Ondřej Čadek, Masanori Kameyama, Post-Perovskite: The Last Mantle Phase Transition, 2007/04, [Refereed], 10.1029/174GM17
  • 3-D convection studies on the thermal state in the lower mantle with post-perovskite phase transition, Masanori Kameyama, David A. Yuen, Geophysical Research Letters, 2006/06, [Refereed], 00948276, 10.1029/2006GL025744
  • ACuTEMan: A multigrid-based mantle convection simulation code and its optimization to the Earth Simulator, Masanori Kameyama, Journal of the Earth Simulator, 2005/12, [Refereed]
  • Multigrid iterative algorithm using pseudo-compressibility for three-dimensional mantle convection with strongly variable viscosity, Masanori Kameyama, Akira Kageyama, Tetsuya Sato, Journal of Computational Physics, 2005/06, [Refereed], 00219991, 10.1016/j.jcp.2004.11.030
  • A 15.2 Tflops simulation of geodynamo on the earth simulator, Akira Kageyama, Masanori Kameyama, Satoru Fujihara, Masaki Yoshida, Mamoru Hyodo, Yoshinori Tsuda, IEEE/ACM SC2004 Conference, Proceedings, 2004/12, [Refereed]
  • Comparison between thermal - viscous coupling and frictional sliding, Masanori Kameyama, Tectonophysics, 2003/12, [Refereed], 00401951, 10.1016/j.tecto.2003.09.012
  • Thermal-mechanical coupling in shear deformation of viscoelastic material as a model of frictional constitutive relations, Masanori Kameyama, Yoshiyuki Kaneda, Pure and Applied Geophysics, 2002/08, [Refereed], 00334553, 10.1007/s00024-002-8720-0
  • Deformation of a seamount subducting beneath an accretionary prism: constraints from numerical simulation, Toshitaka Baba, Takane Hori, Satoshi Hirano, Phil R. Cummins, Jin-Oh Park, Masanori Kameyama, and Yoshiyuki Kaneda, Geophysical Research Letters, 2001/05, [Refereed], 10.1029/2000GL012266
  • Numerical Experiments of Shear Deformation with Frictional Heating., 亀山真典, 堀高峰, CUMMINS P R, 平野聡, 馬場俊孝, 金田義行, Bulletin of the Earthquake Research Institute, University of Tokyo, 東京大學地震研究所彙報, 2000/12, [Refereed], 0040-8972
  • Effects of temperature-dependent thermal diffusivity on shear instability in a viscoelastic zone: implications for faster ductile faulting and earthquakes in the spinel stability field, Joy M. Branlund, Masanori C. Kameyama, David A. Yuen, and Yoshiyuki Kaneda, Earth and Planetary Science Letters, 2000/10, [Refereed], 10.1016/S0012-821X(00)00239-9
  • Transitions in thermal convection with strongly temperature-dependent viscosity in a wide box, Masanori Kameyama, and Masaki Ogawa, Earth and Planetary Science Letters, 2000/08, [Refereed], 10.1016/S0012-821X(00)00171-0
  • Thermal-mechanical effects of low-temperature plasticity (the Peierls mechanism) on the deformation of a viscoelastic shear zone, Masanori Kameyama, David A. Yuen, Shun Ichiro Karato, Earth and Planetary Science Letters, 1999/04, [Refereed], 0012821X, 10.1016/S0012-821X(99)00040-0
  • The interaction of viscous heating with grain-size dependent rheology in the formation of localized slip zones, Masanori Kameyama, David A. Yuen, Hiromi Fujimoto, Geophysical Research Letters, 1997/12, [Refereed], 00948276, 10.1029/97GL02648
  • A thermo-chemical regime in the upper mantle in the early Earth inferred from a numerical model of magma-migration in a convecting upper mantle, Masanori Kameyama, Hiromi Fujimoto, Masaki Ogawa, Physics of the Earth and Planetary Interiors, 1996/04, [Refereed], 00319201, 10.1016/0031-9201(95)03102-2

Books etc

  • 2019/03, 183-192, 978-4-563-02522-9
  • 2018/04, 194-195, 978-4-254-16072-7
  • 2014/04, 174-195, 978-4-254-16067-3
  • The earth simulator, 北脇 重宗, 佐久間 弘文, 亀山 真典, 円山 重直, 橋田 俊之, Tohoku University Press, 2007, 9784861630804

Conference Activities & Talks

  • 2017/09, 招待有り
  • Numerical simulations of the coupled magmatism-mantle convection system in 2-D and 3-D geometries, KAMEYAMA Masanori, OGAWA Masaki, 2017/05
  • 2016/05
  • 2016/05
  • 2016/05
  • 2016/05
  • 2016/05
  • スーパーアースのマントル対流シミュレーション, 宮腰剛広, 亀山真典, 小河正基, 日本天文学会年会講演予稿集, 2016/02
  • マントル対流シミュレーション:地球型惑星内部の解明に向けて, 亀山真典, 宮腰剛広, 柳澤孝寿, 小河正基, 日本天文学会年会講演予稿集, 2016/02
  • 2010/10
  • 数値モデリングによる付加体内部温度構造の推定 南海トラフの例, 亀山真典, 金田義行, 日本地震学会秋季大会講演予稿集, 2001/10
  • 構造探査結果および地震活動を用いて推定したフィリピン海プレートの形状, 馬場俊孝, 堀高峰, CUMMIS P R, 亀山真典, 宇平幸一, 金田義行, 日本地震学会秋季大会講演予稿集, 2000/11
  • 熱と変形の相互作用からみた摩擦構成則の一解釈, 亀山真典, 堀高峰, CUMMINS P R, 平野聡, 馬場俊孝, 宇平幸一, 金田義行, 日本地震学会秋季大会講演予稿集, 2000/11
  • P波速度から推定される堆積物のポアソン比, 東方外志彦, 亀山真典, 平野聡, 宇平幸一, 金田義行, 日本地震学会秋季大会講演予稿集, 2000/11
  • 海山の沈み込みに伴う変形と破壊, 馬場俊孝, 堀高峰, PARK J‐O, 平野聡, 亀山真典, CUMMINS P R, 金田義行, 日本地震学会秋季大会講演予稿集, 1999/11
  • プレート境界地震後の余効変動 下部地殻での応力緩和とアフタースリップ, 堀高峰, CUMMINS P R, 亀山真典, 平野聡, 馬場俊孝, 金田義行, 日本地震学会秋季大会講演予稿集, 1999/11
  • 地殻内の弾性波速度と密度の関係, 東方外志彦, 亀山真典, 金田義行, 河野芳輝, 日本地震学会秋季大会講演予稿集, 1999/11
  • Thermal convection with strongly temperature dependent viscosity in the cylindirical polar coordinate., 中川貴司, 亀山真典, 藤本博巳, 浜野洋三, 理論応用力学講演会講演論文集, 1999/01
  • 103 Thermal convection with strongly temperature-dependent viscosity in the cylindrical polar coordinate, Nakagawa Takashi, Kameyama Masanori C., Hamano Yozo, Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 1998/10, The viscosity of the mantle is the strongly dependence of the temperature. We simulate the thermal convection with temperature dependent viscosity in the cylindrical polar coordiate. The model is considered basal-heating and time-dependent convection model of the Boussinesq approximation, infinite Prandtl number and Newtonian fluid. The viscosity of modelled mantle is the function of exponential to the temperature. The ratio across inner and outer boundary is used 0.5. The Rayleigh number is used 6×10^6. The viscosity contrast is used up to 10^5. The result of our calculation is similar to 2D box model: we find three styles of convection, which is Whole layer mode, Sluggish lid mode and Stagnant lid mode. Appearance of the Stagnant lid mode, cylindical annulus case is lower viscosity contrast compared with 2D box model. In this presentation, we discuss about temperature dependence of viscosity required the numerical modelling of mantle convection with geometry and dynamics of the lithosphere based on our simulation result.
  • The interaction of viscous heating with grain-size dependent rheology in the formation of localized slip zones., 亀山真典, 藤本博巳, YUEN D A, 地球惑星科学関連学会合同大会予稿集, 1998/05
  • The Moving-Lid mode in a temperature-dependent viscosity convection in a wide box., 亀山真典, 小河正基, 藤本博巳, 地球惑星科学関連学会合同大会予稿集, 1998/05
  • Numerical Experiments of Mantle Convection with Grain-Size-Dependent Rheology., 亀山真典, 藤本博巳, 小河正基, 地球惑星科学関連学会合同大会予稿集, 1997/03
  • Numerical modeling of plate motion with mantle convection., 亀山真典, 藤本博巳, 日本地震学会秋季大会講演予稿集, 1996/09
  • Numerical experiments of Magma-Migration in a Two-Dimensional Convecting Upper Mantle., 亀山真典, 藤本博巳, 小河正基, 地球惑星科学関連学会合同大会予稿集, 1996/03
  • Magma-migration in convecting mantle., 亀山真典, 小河正基, 藤本博巳, 地球惑星科学関連学会合同大会予稿集, 1995/03
  • A numerical model of magma-migration in a convecting upper mantle., 亀山真典, 小河正基, 藤本博巳, 地球惑星科学関連学会合同大会予稿集, 1995/03
  • 216 Numerical experiments of the effect of density cross over on thermal and chemical evolution of the Earth's upper mantle, Kameyama Masanori, Ogawa Masaki, Fujimoto Hiromi, Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 1994/10
  • Numerical experiments of the effect of density cross over on thermal and chemical evolution of the Earth's upper mantle., 亀山真典, 小河正基, 藤本博巳, 日本地震学会秋季大会講演予稿集, 1994/10
  • Numerical experiments of the effect of density cross over on thermal and chemical evolution of the Earth's upper mantle., 亀山真典, 小河正基, 藤本博巳, 日本惑星科学会秋季講演会予稿集, 1994/10

Misc

  • Symposium on Computational Planetary Science, Hayashi Y., Umeda T., Umemura M., Ogawa M., Kameyama M., Planetary People, The Japanese Society for Planetary Sciences, Planetary People, 23, 1, 64, 69, 2014/03, 0918273X, http://ci.nii.ac.jp/naid/110009809695
  • Mantle Convection : "Flows" in the "Solid" Earth's Interior, KAMEYAMA Masanori, Journal of the Japan Society of Mechanical Engineers, The Japan Society of Mechanical Engineers, Journal of the Japan Society of Mechanical Engineers, 116, 1136, 478, 480, 2013/07, 00214728, http://ci.nii.ac.jp/naid/110009624819
  • 51, 13, 17, 22, 2012/12, 0914-6253, http://ci.nii.ac.jp/naid/40019493542
  • Mantle Convection : Flow of &quot;Solid&quot; Rocks in the Earth's Interior(<Special Review>Fluid Flow Phenomena in Earth Science Part 1: The Interior of the Earth), KAMEYAMA Masanori, Journal of Japan Society of Fluid Mechanics, Japan Society of Fluid Mechanics, Journal of Japan Society of Fluid Mechanics, 30, 4, 305, 310, 2011/08, 02863154, http://ci.nii.ac.jp/naid/110008722919
  • Ubiquitous interactive visualization of 3-D mantle convection through web applications using java, Jonathan C. Mc Lane, Wojciech W. Czech, David A. Yuen, Michael R. Knox, James B S G Greensky, M. Charley Kameyama, Vincent M. Wheeler, Rahul Panday, Hiroki Senshu, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 5359 LNCS, 1011, 1021, 2008/12, 03029743, 10.1007/978-3-540-89646-3_101, http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=70149099998&origin=inward, We have designed a new system for real-time interactive visualization of results taken directly from large-scale simulations of 3-D mantle convection and other large-scale simulations. This approach allows for intense visualization sessions for a couple of hours as opposed to storing massive amounts of data in a storage system. Our data sets consist of 3-D data for volume rendering with sets ranging as high as over 10 million unknowns at each timestep. Large scale visualization on a display wall holding around 13 million pixels has already been accomplished with extension to hand-held devices, such as the OQO and Nokia N800. We are developing web-based software in Java to extend the use of this system across long distances. The software is aimed at creating an interactive and functional application capable of running on multiple browsers by taking advantage of two AJAX-enabled web frameworks: Echo2 and Google Web Toolkit. © 2008 Springer Berlin Heidelberg.
  • Mantle Convection Visualization, KAMEYAMA Masanori, Journal of the Visualization Society of Japan, 可視化情報学会, Journal of the Visualization Society of Japan, 28, 110, 174, 179, 2008/07, 09164731, http://ci.nii.ac.jp/naid/10021111673
  • The dynamical influences from physical properties in the lower mantle and post-perovskite phase transition, David A. Yuen, Ctirad Matyska, Ondřej Čadek, Masanori Kameyama, Geophysical Monograph Series, 174, 249, 270, 2007/01, 00658448, 10.1029/174GM17, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=63449139207&origin=inward, © 2007 by the American Geophysical Union. The discovery of post-perovskite phase transition near the core-mantle boundary (CMB) has turned our heads to the potentially important role played by the increasing complexity of the physical properties in the lower-mantle models. In this study we have investigated the influences on lower mantle dynamics by the strongly depth-dependent coefficient of thermal expansion and radiative thermal conductivity together with the post-perovskite transition within the framework of isochemical models. We have carried out the simulations in both 2-D and 3-D Cartesian geometries. First, we review the basic connection between the temperature profile a nd the Clapeyron slope, calling attention to the special relationship between the temperature intercept of the post-perovskite phase change and the temperature at the core-mantle boundary. Double-crossing of the post-perovskite boundary takes place only, when the temperature of the CMB is greater than the temperature intercept of the phase change. We find that mantle plumes become multiscale in nature because of the combined effects exerted by variable mantle viscosity, strongly depth-dependent thermal expansivity, radiative thermal conductivity at the bottom of the mantle, the spinel to perovskite phase transition and the perovskite to post-perovskite phase change in the deep mantle. Both radiative thermal conductivity and strongly decreasing thermal expansivity in the lower mantle can help to induce partially layered convection with slabs stagnating in the transition zone. In our isochemical models a second low viscosity zone is created under the transition zone accompanied by intense shear heating. Secondary mantle plumes emerge from this region at the base of the transition zone. Large-scale upwellings in the lower mantle are induced mainly by both the style of lower-mantle stratification and the decrease in thermal expansivity. They control the location and the local dynamics of the upper-mantle plumes. In these models with variable thermal conductivity and viscosity, an increase in the temperature of the CMB causes a greater tendency for layered convection. From the same depth-dependent thermal expansivity, we can deduce the 3-D density anomalies from the seismic velocity anomalies inferred from seismic tomographic inversion. Using these density distributions, we can calculate the viscous responses of the Earth due to these density anomalies for a given viscosity structure. We then focus on the lateral viscosity variations of the deep mantle on the solution of the inverse problem involving the inferences of the viscosity from the long-wavelength geoid. Our solution for the large-scale lateral viscosity structure in the lowermost mantle shows that the region underneath hot spots have significantly higher viscosity in the deep mantle than the region below subduction regions. Recent inferences from firstprinciples calculations and laboratory experiments on analogue post-perovskite material also surmise the rheology of post-perovskite would be dominated by dislocation mechanism and be softer than perovskite. We put forth a hypothetical scenario in which the bottom portions of the superplumes in the deep mantle are stiffer than the adjacent post-perovskite mantle and are held fixed by the surrounding horizontal flow of post-perovskite.
  • A 15.2 TFlops simulation of geodynamo on the earth simulator, Akira Kageyama, Masanori Kameyama, Satoru Fujihara, Masaki Yoshida, Mamoru Hyodo, Yoshinori Tsuda, Proceedings of the ACM/IEEE SC 2004 Conference: Bridging Communities, 2004/01, 10.1109/SC.2004.1, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84934293836&origin=inward, © 2004 IEEE. For realistic geodynamo simulations, one must solve the magnetohydrodynamic equations to follow time development of thermal convection motion of electrically conducting fluid in a rotating spherical shell. We have developed a new geodynamo simulation code by combining the finite difference method with the recently proposed spherical overset grid called Yin-Yang grid. We achieved performance of 15.2 Tflops (46% of theoretical peak performance) on 4096 processors of the Earth Simulator.

Other Research Activities

Awards & Honors

Research Grants & Projects

  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(B)), Development of Three-dimensional Simulation Programs of Mantle Convection with Multiple Phases and/or Components, MASANORI KAMEYAMA, 固体地球惑星物理学, 基盤研究(B), 愛媛大学
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(特定領域研究), Modeling of stagnation/falling processes by downward flow, Yoshioka SHOICHI, 岩瀬 康行, 田端 正久, Nakakuki TOMOEKI, Suzuki ATSUSHI, Kameyama MASANORI, Nakagawa TAKASHI, Tabata MASAHISA, Iwase YASUYUKI, 特定領域研究, 九州大学
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Development of world-class program for three-dimensional numerical simulation of mantle convection, Masanori KAMEYAMA, 固体地球惑星物理学, 基盤研究(C), 独立行政法人海洋研究開発機構->愛媛大学
  • Ministry of Education, Culture, Sports, Science and Technology, Grants-in-Aid for Scientific Research(基盤研究(C)), Physical Mechanism of Generation and Reversals of Geomagnetic Dynamo, Tetsuya SATO, 高丸 尚教, Yuichi TAMURA, Fumiaki ARAKI, Masaki YOSHIDA, Masanori KAMEYAMA, Akira KAGEYAMA, プラズマ理工学->プラズマ科学, 基盤研究(C), 核融合科学研究所->特別認可法人海洋科学技術センター->独立行政法人海洋研究開発機構

Activity track record

Educational activities

Course in charge

  • 2019, the first semester, under graduate, 新入生セミナーB
  • 2019, the first semester, under graduate, 固体地球物理学概論
  • 2019, the first semester, under graduate, 情報地球科学
  • 2019, the first semester, under graduate, 情報地球科学演習
  • 2019, the first semester, under graduate, 地球惑星科学特論
  • 2019, the first semester, master course, 固体地球物理学特論
  • 2019, the first semester, master course, 地球科学高等実験Ⅰ
  • 2019, the first semester, master course, 地球科学高等実験Ⅱ
  • 2019, the first semester, master course, 地球科学高等実験Ⅴ
  • 2019, the first semester, master course, 地球科学高等実験Ⅵ
  • 2019, the first semester, master course, 地球科学プレゼンテーション特別実習Ⅰ
  • 2019, the first semester, master course, 地球科学プレゼンテーション特別実習Ⅲ
  • 2019, the first semester, master course, 地球科学ゼミナールⅢ
  • 2019, the first semester, master course, 地球科学プレゼンテーション特別実習Ⅱ
  • 2019, the first semester, master course, 地球科学高等実験Ⅲ
  • 2019, the first semester, under graduate, 固体地球物理学概論
  • 2019, the first semester, under graduate, SSC共通セミナー
  • 2019, the first semester, under graduate, 固体地球物理学概論
  • 2019, the first semester, under graduate, 情報地球科学
  • 2019, the first semester, under graduate, 地球惑星科学セミナーI
  • 2019, the first semester, under graduate, 地球惑星科学セミナーIII
  • 2019, the first semester, under graduate, 地球惑星科学特論
  • 2019, the first semester, under graduate, 情報地球科学演習


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