Wed. May 28, 2025 1:45 PM - 3:15 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

convener:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Chairperson:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Jun Tsuchiya(Geodynamics Research Center, Ehime University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo)

Wed. May 28, 2025 3:30 PM - 5:00 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

convener:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Chairperson:Jun Tsuchiya(Geodynamics Research Center, Ehime University), Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo)

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

convener:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka)

Thu. May 29, 2025 9:00 AM - 10:30 AM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

convener:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Chairperson:Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Takayuki Ishii(Institute for Planetary Materials, Okayama University), Jun Tsuchiya(Geodynamics Research Center, Ehime University)

Thu. May 29, 2025 10:45 AM - 12:15 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

convener:Takayuki Ishii(Institute for Planetary Materials, Okayama University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Chairperson:Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Takayuki Ishii(Institute for Planetary Materials, Okayama University), Jun Tsuchiya(Geodynamics Research Center, Ehime University), Riko Iizuka-Oku(Department of Earth Sciences, School of Education, Waseda University)

Thu. May 29, 2025 1:45 PM - 3:15 PM 201B (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

convener:Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Satoshi Ohmura(Hiroshima Institute of Technology), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Noriyoshi Tsujino(Japan Synchrotron Radiation Research Institute), Chairperson:Satoshi Ohmura(Hiroshima Institute of Technology), Jun Tsuchiya(Geodynamics Research Center, Ehime University), Noriyoshi Tsujino(Japan Synchrotron Radiation Research Institute), Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

convener:Kenji Kawai(Department of Earth and Planetary Science, School of Science, University of Tokyo), Satoshi Ohmura(Hiroshima Institute of Technology), Jun Tsuchiya(Department of Earth and Space Science, The University of Osaka), Noriyoshi Tsujino(Japan Synchrotron Radiation Research Institute)

Fri. May 30, 2025 3:30 PM - 5:00 PM 106 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT18] Planetary cores: Structure, formation, and evolution

3:30 PM - 3:45 PM

[SIT18-06] Inferring 1-D P-wave velocity structure of the lowermost outer core beneath the northeastern Pacific using waveform inversion

*Toru Obayashi¹, Rei Sato¹, Kenji Kawai¹ (1.Department of Earth and Planetary Science, School of Science, University of Tokyo)

Wed. May 28, 2025 1:45 PM - 3:15 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

2:15 PM - 2:30 PM

[SIT20-03] Shear wave splitting analysis of Thai Seismic Array recordings: Implications for the mantle flow beneath Thailand

*Tarudee Autaijaratrasmee¹, Satoru Tanaka², Kenji Kawai¹, Sutthipong Noisagool³ (1.University of Tokyo, 2.Japan Agency for Marine-Earth Science and Technology, 3.Mahidol University)

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[E] Poster
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

5:15 PM - 7:15 PM

[SIT20-P05] Using the S_diff phase in waveform inversion: Preliminary application to D″ beneath the central Pacific

*Keisuke Otsuru¹, Kenji Kawai¹ (1.University of Tokyo)

Thu. May 29, 2025 10:45 AM - 12:15 PM 105 (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT20] Deep Earth Sciences

11:00 AM - 11:15 AM

[SIT20-20] Interaction of subducted slabs with lowermost mantle materials: Insights from waveform inversion for transversely isotropic structure beneath Central America

*Rei Sato¹, Kenji Kawai¹, RYOICHI ISHIBASHI¹ (1.Department of Earth and Planetary Science, School of Science, University of Tokyo)

11:15 AM - 11:30 AM

[SIT20-21] Cold SiO₂-rich slabs reaching the CMB revealed by the seifertite phase boundary

*Ryosuke Sinmyo¹, Saori Kawaguchi-Imada², Rei Sato³, Keisuke Otsuru³, Kenji Kawai³, Hiroshi Sakuma⁴, Shigeru Suehara⁴, Takayuki Ishii⁵, Shuhou Maitani¹ (1.Meiji Univ., 2.JASRI, 3.Univ. Tokyo, 4.NIMS, 5.Okayama Univ.)

Thu. May 29, 2025 1:45 PM - 3:15 PM 201B (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

1:45 PM - 2:00 PM

[SCG58-01] Effect of Oxygen Vacancies on stability in Al-bearing Bridgmanite based on DFT calculations

*Seitaro Yazawa¹, Ryo Kobayashi², Satoshi Ohmura³, Kenji Kawai¹ (1.The University of Tokyo, 2.Nagoya Institute of Technology, 3.Hiroshima Institute of Technology)

2:25 PM - 2:40 PM

[SCG58-03] Molecular dynamics simulations of dislocation core structure in α-quartz

*Ikuchi Funahashi¹, Kobayashi Ryo², Satoshi Ohmura³, Kenji Kawai¹ (1.University of Tokyo, 2.Nagoya Institute of Technology, 3.Hiroshima Institute of Technology)

3:00 PM - 3:15 PM

[SCG58-05] Discussion

*Kenji Kawai¹ (1.Department of Earth and Planetary Science, School of Science, University of Tokyo)

Thu. May 29, 2025 1:45 PM - 3:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

2:00 PM - 2:15 PM

[SCG62-07] Unstable slip and the temperature dependence of dry quartz gouge

*Shoya Uchikoshi^1,2, Hiroshi Sakuma², Ikuo Katayama³, Kenji Kawai¹ (1.The University of Tokyo, 2.NIMS, 3.Hiroshima University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

[J] Poster
| S (Solid Earth Sciences )
| S-CG Complex & General

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

5:15 PM - 7:15 PM

[SCG62-P12] Temperature and Pressure Variation of the Real Contact Area between α-Quartz Particles: Calculation by Molecular Dynamics Simulation

*Riku Sugimoto¹, Hiroshi Sakuma^1,2, Kenji Kawai¹ (1.Department of Earth and Planetary Science, School of Science, The University of Tokyo, 2.National Institute for Materials Science)

Kenji Kawai

Convener, Chairperson

[S-IT20] Deep Earth Sciences

[S-IT20] Deep Earth Sciences

[S-IT20] Deep Earth Sciences

[S-IT20] Deep Earth Sciences

[S-IT20] Deep Earth Sciences

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

Speaker, Author, Co-Author

[S-IT18] Planetary cores: Structure, formation, and evolution

[SIT18-06] Inferring 1-D P-wave velocity structure of the lowermost outer core beneath the northeastern Pacific using waveform inversion

[S-IT20] Deep Earth Sciences

[SIT20-03] Shear wave splitting analysis of Thai Seismic Array recordings: Implications for the mantle flow beneath Thailand

[S-IT20] Deep Earth Sciences

[SIT20-P05] Using the S_diff phase in waveform inversion: Preliminary application to D″ beneath the central Pacific

[S-IT20] Deep Earth Sciences

[SIT20-20] Interaction of subducted slabs with lowermost mantle materials: Insights from waveform inversion for transversely isotropic structure beneath Central America

[SIT20-21] Cold SiO₂-rich slabs reaching the CMB revealed by the seifertite phase boundary

[S-CG58] Innovation through the Integration of Solid Earth Science and Materials Science

[SCG58-01] Effect of Oxygen Vacancies on stability in Al-bearing Bridgmanite based on DFT calculations

[SCG58-03] Molecular dynamics simulations of dislocation core structure in α-quartz

[SCG58-05] Discussion

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

[SCG62-07] Unstable slip and the temperature dependence of dry quartz gouge

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

[SCG62-P12] Temperature and Pressure Variation of the Real Contact Area between α-Quartz Particles: Calculation by Molecular Dynamics Simulation