[E] Oral

S (Solid Earth Sciences ) » S-IT Science of the Earth's Interior & Techtonophysics

[S-IT21] Interaction and Coevolution of the Core and Mantle in the Earth and Planets

Mon. May 27, 2019 9:00 AM - 10:30 AM A10 (TOKYO BAY MAKUHARI HALL)

convener:Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), Kenji Ohta(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Taku Tsuchiya(Geodynamics Research Center, Ehime University), Chairperson:Anselme Borgeaud, Taku Tsuchiya

Recent observational and experimental investigations have significantly advanced our understanding of the structure and constituent materials of the deep Earth. Yet, even fundamental properties intimately linked with formation and evolution of the planet, such as details of the chemical heterogeneity in the mantle and light elements dissolved in the core, remained unclear. Seismological evidence has suggested a vigorous convection in the lower mantle, whereas geochemistry has suggested the presence of stable regions there that hold ancient chemical signatures. The amounts of radioactive isotopes that act as heat sources and drive dynamic behaviors of the deep Earth are also still largely unknown. We provide an opportunity to exchange the achievements and ideas, and encourage persons who try to elucidate these unsolved issues of the core-mantle evolution using various methods, including high-pressure and high-temperature experiments, high-precision geochemical and paleomagnetic analyses, high-resolution geophysical observations, geo-neutrino observations, and large-scale numerical simulations. Papers stimulating an interdisciplinary collaboration relating to establishment of the Japan-SEDI community are also welcomed.

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9:00 AM - 9:15 AM

[SIT21-01] The role of stishovite as a deep nitrogen carrier indicated from high-pressure and high-temperature experiments

*Ko Fukuyama¹, Hiroyuki Kagi¹, Toru Inoue^2,3, Toru Shimei³, Sho Kakizawa³, Shunichi Hishita⁴, Yuji Sano⁵, Naoto Takahata⁵ (1.Geochemical Research Center, Graduate School of Science, The University of Tokyo, 2.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 3.Geodynamics Research Center, Ehime University, 4.National Institute for Materials Science, 5.Atmosphere and Ocean Research Institute, The University of Tokyo)

9:15 AM - 9:30 AM

[SIT21-02] 3-D P- and S-velocity structure of the D″ layer beneath Central America and the Caribbean using waveform inversion

★Invited Papers

*Anselme F. E. Borgeaud^1,2, Kenji Kawai¹, Robert J. Geller¹ (1.Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, 2.Institute of Earth Sciences, Academia Sinica)

9:30 AM - 9:45 AM

[SIT21-03] Uniaxial deformation experiments of bridgmanite using D-111 type high pressure apparatus

★Invited Papers

*Noriyoshi Tsujino¹, Daisuke Yamazaki¹, Yu Nishihara² (1.Institute for Planetary Materials, Okayama University, 2.Geodynamics Research Center, Ehime University)

9:45 AM - 10:00 AM

[SIT21-04] Waveform inversion for 3D anisotropic structure in D″ beneath the Northern Pacific: Constraints on mineralogy and flow in the lowermost mantle

*Yuki Suzuki¹, Kenji Kawai¹, Robert J. Geller¹ (1.Department of Earth and Planetary Sciences, School of Science,The University of Tokyo)

10:00 AM - 10:15 AM

[SIT21-05] Maximum water solubility of bridgmanite under the Earth's lower mantle conditions

*Sho Kakizawa¹, Toru Inoue^1,2,3, Ryotaro Abe¹, Minami Kuroda⁴, Naoya Sakamoto⁵, Hisayoshi Yurimoto^4,5,6 (1.Geodynamics Reseach Center, Ehime University, 2.Graduate School of Science, Hiroshima University, 3.Hiroshima Institute of Plate Convergence Region Research, 4.Graduate School of Science, Hokkaido University, 5.Creative Research Institution, Hokkaido University, 6.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)

10:15 AM - 10:30 AM

[SIT21-06] Origin and role of lost continents

*Shigenori Maruyama¹, Kenji Kawai², Steeve Gréaux³, Taku Tsuchiya³, Dapeng Zhao⁴ (1.Earth-Life Science Institute, Tokyo Institute of Technology, 2.Department of Earth and Planetary Science, School of Science, University of Tokyo, 3.Ehime University, 4.Department of Geophysics, Tohoku University)

Session information

[S-IT21] Interaction and Coevolution of the Core and Mantle in the Earth and Planets

[SIT21-01] The role of stishovite as a deep nitrogen carrier indicated from high-pressure and high-temperature experiments

[SIT21-02] 3-D P- and S-velocity structure of the D″ layer beneath Central America and the Caribbean using waveform inversion

★Invited Papers

[SIT21-03] Uniaxial deformation experiments of bridgmanite using D-111 type high pressure apparatus

★Invited Papers

[SIT21-04] Waveform inversion for 3D anisotropic structure in D″ beneath the Northern Pacific: Constraints on mineralogy and flow in the lowermost mantle

[SIT21-05] Maximum water solubility of bridgmanite under the Earth's lower mantle conditions

[SIT21-06] Origin and role of lost continents

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