Oral presentation

R3: High-pressure science and deep Earth’s material

Thu. Sep 12, 2024 10:00 AM - 12:00 PM ES025 (Higashiyama Campus)

Chairperson:Takeshi Sakai(Ehime University), Ryosuke Sinmyo(Meiji University), Takayuki Ishii(Okayama University), Takaaki Kawazoe(Hiroshima University)

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10:00 AM - 10:15 AM

[R3-01] Pressure-induced polyamorphic transition in CaAl₂O₄ glass revealed by elastic wave velocity and X-ray diffraction measurements and molecular dynamics simulations

「招待講演」

*Itaru Ohira¹, Yoshio Kono^2,3, Steeve Gréaux³, James W E Drewitt⁴, Sandro Jahn⁵, Fumiya Noritake⁶, Koji Ohara^7,8, Satoshi Hiroi^7,8, Nozomi M Kondo⁹, Rostislav Hrubiak¹⁰, Yuji Higo⁸, Noriyoshi Tsujino⁸, Sho Kakizawa⁸, Kiyofumi Nitta⁸, Oki Sekizawa⁸ (1. Gakushuin Univ. Sci., 2. Kwansei Gakuin Univ. Sci., 3. Ehime Univ. GRC, 4. U. Bristol Phys., 5. U. Cologne IGM, 6. U. Yamanashi Interdisciplinary Research, 7. Shimane Univ. Materials for Energy, 8. JASRI, 9. Okayama Univ. IPM, 10. ANL HPCAT)

10:15 AM - 10:30 AM

[R3-02] Structural analysis of CO₂-bearing sodium silicate melts using molecular dynamics simulations and synchrotron radiation X-ray diffraction experiments

「発表賞エントリー」

*Shino HAYAFUNE¹, Yohei Onodera², Shinji Kohara², Haruki Ichikawa³, Tatsuya Sakamaki¹, Kenichi Funakoshi⁴, Akio Suzuki¹ (1. Tohoku Univ. Graduate School of Science., 2. NIMS, 3. Tohoku Univ. School of Science., 4. CROSS)

10:30 AM - 10:45 AM

[R3-03] Possible presence of poirierite, a high-pressure phase of (Mg,Fe)₂SiO₄, in the deep Earth's mantle

*Naotaka TOMIOKA¹, Takuo Okuchi², Narangoo Purevjav³, Masaaki Miyahara⁴ (1. KOCHI, JAMSTEC, 2. KRUNS, Kyoto Univ., 3. Seoul National Univ., 4. Earth Planet Sci., Hiroshima Univ.)

10:45 AM - 11:00 AM

[R3-04] Temperature dependence of water content in wadsleyite and ringwoodite

*Toru INOUE^1,2, Yuji HAMADA², Hanae KAYA², Yusuke EGI¹, Daichi MAEDA¹, Kazutaka YAMAGUCHI¹, Konosuke YAMADA¹, Takaaki KAWAZOE^1,2 (1. Hiroshima Univ. Adv. Sci. Eng., 2. Hiroshima Univ. Sci.)

11:00 AM - 11:15 AM

[R3-05] Temperature dependence of the Fe³⁺/ΣFe ratio in wadsleyite by electron energy loss spectroscopy (EELS)

「発表賞エントリー」

*Kazutaka YAMAGUCHI¹, Takaaki Kawazoe¹, Toru Inoue¹, Naotaka Tomioka² (1. Hiroshima University, 2. JAMSTEC, Kochi institute)

11:15 AM - 11:30 AM

[R3-06] Advantage on the analysis of cation site occupancies by neutron diffraction and some examples of application for high-pressure minerals

*Takuo OKUCHI¹ (1. Kyoto Univ.)

11:30 AM - 11:45 AM

[R3-07] In situ lattice volume observation of davemaoite in the CaSiO₃-H₂O system up to uppermost lower mantle conditions

*Goru Takaichi¹, Takayuki Ishii², Yu Nishihara¹, Kyoko Matsukage³, Yuji Higo⁴, Noiyoshi Tsujino⁴, Sho Kakizawa⁴ (1. GRC, Ehime Univ., 2. IPM, Okayama Univ., 3. Teikyo University of Science, 4. JASRI)

11:45 AM - 12:00 PM

[R3-08] Elasticity Measurements of Hydrous SiO₂ post-stishovite and its implication to the seismic anomalies in the lower mantle

「発表賞エントリー」

*Yuichiro MORI^1,2, Motohiko MURAKAMI², Takashi YOSHINO³, Hiroyuki KAGI¹ (1. UTokyo. Sci., 2. ETHZ. D-ERDW., 3. Okayama Univ. IPM)

Session information

R3: High-pressure science and deep Earth’s material

[R3-01] Pressure-induced polyamorphic transition in CaAl₂O₄ glass revealed by elastic wave velocity and X-ray diffraction measurements and molecular dynamics simulations

「招待講演」

[R3-02] Structural analysis of CO₂-bearing sodium silicate melts using molecular dynamics simulations and synchrotron radiation X-ray diffraction experiments

「発表賞エントリー」

[R3-03] Possible presence of poirierite, a high-pressure phase of (Mg,Fe)₂SiO₄, in the deep Earth's mantle

[R3-04] Temperature dependence of water content in wadsleyite and ringwoodite

[R3-05] Temperature dependence of the Fe³⁺/ΣFe ratio in wadsleyite by electron energy loss spectroscopy (EELS)

「発表賞エントリー」

[R3-06] Advantage on the analysis of cation site occupancies by neutron diffraction and some examples of application for high-pressure minerals

[R3-07] In situ lattice volume observation of davemaoite in the CaSiO₃-H₂O system up to uppermost lower mantle conditions

[R3-08] Elasticity Measurements of Hydrous SiO₂ post-stishovite and its implication to the seismic anomalies in the lower mantle

「発表賞エントリー」

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