Trench-parallel fluid migration and its transient discharge in a cold subduction zone decoded by geochemistry of subducted cherts

Hanaya Okuda

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG63] Uncovering stress accumulation and fault strengthening of megathrust earthquakes

Mon. May 25, 2026 9:00 AM - 10:30 AM 301A (International Conference Hall, Makuhari Messe)

Chairperson:Kodaira Shuichi(Japan Agency for Marine-Earth Science and Technology), Ujiie Kohtaro(Faculty of Life and Environmental Sciences, University of Tsukuba), Regalla Christine(Northern Arizona University)

10:00 AM - 10:15 AM

[SCG63-05] Trench-parallel fluid migration and its transient discharge in a cold subduction zone decoded by geochemistry of subducted cherts

*Hanaya Okuda¹, Hitomi Mizuno², Takashi Sano³, Akira Ijiri^4,1, Minoru Ikehara⁵, Wataru Tanikawa¹, Asuka Yamaguchi² (1. Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2. Atmosphere and Ocean Research Institute, University of Tokyo, 3. Department of Science, National Museum of Nature and Science, 4. Graduate School of Maritime Sciences, Kobe University, 5. Marine Core Research Institute, Kochi University)

Keywords:Origin of fluid, Cold subduction zone, Japan Trench