Japan Geoscience Union Meeting 2025

Hanaya Okuda

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Convener, Chairperson

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

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

Fri. May 30, 2025 9:00 AM - 10:30 AM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Kenichi Tsuda(Institute of Technology, Shimizu Corporation)

Fri. May 30, 2025 10:45 AM - 12:15 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience)

Fri. May 30, 2025 1:45 PM - 3:15 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Michiyo Sawai(Chiba University)

Fri. May 30, 2025 3:30 PM - 5:00 PM Exhibition Hall Special Setting (3) (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation), Chairperson:Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

convener:Ritsuya Shibata(National Research Institute for Earth Science and Disaster Resilience), Michiyo Sawai(Chiba University), Hanaya Okuda(Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology), Kenichi Tsuda(Institute of Technology, Shimizu Corporation)

Speaker, Author, Co-Author

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

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-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

5:15 PM - 7:15 PM

[SCG45-P01] Interaction between fluid phase transition induced by frictional heat, formation of off-fault damage, and styles of on-fault slip

*Hanaya Okuda1, Wataru Tanikawa1, Yohei Hamada1, Keishi Okazaki2,1, John D Bedford3,1, Takehiro Hirose1 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.Earth and Planetary Systems Science Program, Hiroshima University, 3.Department of Earth, Ocean and Ecological Sciences, University of Liverpool)

5:15 PM - 7:15 PM

[SCG45-P03] Synthesis of the Laboratory Frictional Properties in a Shallow Subduction Zone: The Nankai Trough, Offshore SW Japan

*Takehiro Hirose1, Junli Zhang2, Hanaya Okuda1, John Bedford3, Matt Ikari2, Anja Schleicher4, Daniel Faulkner3 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.MARUM Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Bremen, Germany, 3.Department of Earth, Ocean, and Ecological Sciences, University of Liverpool, 4.Helmholtz Zentrum Potsdam, Deutsches GeoForschungsZentrum (GFZ))

Mon. May 26, 2025 9:00 AM - 10:30 AM 105 (International Conference Hall, Makuhari Messe)

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

[S-CG46] Uncovering stress accumulation and fault strengthening of megathrust earthquakes

10:00 AM - 10:15 AM

[SCG46-05] Subduction of Horst-and-Graben Structures and Their Impact on Plate Boundary Faults: Numerical and Drilling Perspectives

*Ayumu Miyakawa1, Hanaya Okuda2, Yohei Hamada2, Yasuyuki Nakamura3, Hiroaki Koge1, Atsushi Noda1, Christine Regalla4, James D Kirkpatrick5, Kohtaro Ujiie6, Marianne Conin7, Patrick Fulton8, Shuichi Kodaira3, Nobu Eguchi3, Lena Maeda3, Natsumi Okutsu3, Sean Toczko3, Expedition 405 Scientists (1.Geological Survey of Japan, AIST, 2.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 3.Japan Agency for Marine Earth Science and Technology, 4.Northern Arizona University, 5.McGill University, 6.Faculty of Life and Environmental Sciences, University of Tsukuba, 7.University of Lorraine, 8.Cornell University)

Fri. May 30, 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-CG54] New Insights of Fluid-Rock Interactions: From Surface to Deep Subduction Zone

Sun. May 25, 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-CG59] Oceanic plate as inputs to subduction zone: evolution process of the oceanic plate

5:15 PM - 7:15 PM

[SCG59-P04] Physical properties of basalt and peperite at petit-spot volcanoes: preliminary results

Hanaya Okuda1, *Yuya Akamatsu2, Ikuo Katayama3, Shiki Machida4, Naoto Hirano5, Norikatsu Akizawa3 (1.Kochi Institute for Core Sample Research, JAMSTEC, 2.Research Institute for Marine Geodynamics, JAMSTEC, 3.Earth and Planetary Systems Science Program, Hiroshima Unviersity, 4.Ocean Resource Research Center for Next Generation, Chiba Institute of Techonology, 5.Center for Northeast Asian Studies, Tohoku University)

Mon. May 26, 2025 3:30 PM - 5:00 PM 201A (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-IS Intersection

[M-IS17] New frontiers in geology