Researcher Information
researchmap URL
Research Areas
Research History
- Apr. 2023 - Present
Japan Agency for Marine-Earth Science and Technology, Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Kochi Institute for Core Sample Research, Researcher - Mar. 2021 - Mar. 2023
National Institute of Advanced Industrial Science and Technology, Geological Survey of Japan, Technical Trainee - Nov. 2020 - Mar. 2023
Japan Agency for Marine-Earth Science and Technology, Research Student - Apr. 2020 - Mar. 2023
Japan Society for the Promotion of Science, Research Fellowship (DC1) - Oct. 2018 - Mar. 2023
University of Tokyo, Leading Graduate Course for Frontiers of Mathematical Sciences and Physics, Student - Aug. 2021 - Dec. 2021
Utrecht University, Earth Simulation Laboratory, Visiting Ph.D. Student - Jul. 2019 - Sep. 2019
University of Bremen, Center for Marine Environmental Sciences, Visiting Student
Education
- Apr. 2020 - Mar. 2023, University of Tokyo, Atmosphere and Ocean Research Institute, Department of Ocean Floor Geoscience
- Apr. 2018 - Mar. 2020, University of Tokyo, Graduate School of Science, Department of Earth and Planetary Science
- Apr. 2014 - Mar. 2018, University of Tokyo, School of Science, Department of Earth and Planetary Environmental Science
Research activity information
Papers
- James D. Kirkpatrick; Heather M. Savage; Christine Regalla; Srisharan Shreedharan; Catherine Ross; Hanaya Okuda; Uisdean Nicholson; Kohtaro Ujiie; Ron Hackney; Marianne Conin; Pei Pei; Sara Satolli; Junli Zhang; Patrick Fulton; Matt J. Ikari; Shuichi Kodaira; Lena Maeda; Natsumi Okutsu; Sean Toczko; Nobuhisa Eguchi
Extreme plate boundary localization promotes shallow earthquake slip at the Japan Trench
Science, 18 Dec. 2025
[Reviewed] - Hanaya Okuda; Hitomi Mizuno; Takashi Sano; Akira Ijiri; Minoru Ikehara; Wataru Tanikawa; Asuka Yamaguchi
Trench‐Parallel Fluid Migration and Its Transient Discharge in a Cold Subduction Zone Decoded by Geochemistry of Subducted Cherts
Geochemistry, Geophysics, Geosystems, Dec. 2025
26, 12, e2025GC012331
[Reviewed]
Lead, Corresponding - Daniel R. Faulkner; Junli Zhang; Hanaya Okuda; John D. Bedford; Matt J. Ikari; Anja M. Schleicher; Takehiro Hirose
Synthesis of the Laboratory Frictional Properties of a Major Shallow Subduction Zone: The Nankai Trough, Offshore SW Japan
Journal of Geophysical Research: Solid Earth, Dec. 2025
130, e2025JB031613
[Reviewed] - Hanaya Okuda; Yohei Hamada; Kurama Okubo
Geological Structure and Frictional Properties around Source Regions of Slow Earthquakes at the Shallow Plate Interface in the Nankai Trough
Zisin, Nov. 2025
78, 199, 215
[Reviewed]
Lead, Corresponding - Trishit Ruj; Hanaya Okuda; Goro Komatsu; Hitoshi Hasegawa; James W. Head; Tomohiro Usui; Shun Mihira; Makito Kobayashi
Long-term and multi-stage ice accumulation in the martian mid-latitudes during the Amazonian
Geology, 02 Sep. 2025
53, 945, 950
[Reviewed] - Hanaya Okuda; Yuya Akamatsu; Manami Kitamura; Michiyo Sawai
Elastic properties of rocks from the seismogenic zone and minimum fault size to nucleate megathrust earthquakes
Progress in Earth and Planetary Science, 01 Jul. 2025
12, 47
[Reviewed]
Lead, Corresponding - Yuya Akamatsu; Hanaya Okuda; Manami Kitamura; Michiyo Sawai
Mesoscale fractures control the scale dependences of seismic velocity and fluid flow in subduction zones
Tectonophysics, Feb. 2025
896, 230606, 230606
[Reviewed] - Shunsuke Takemura; Yohei Hamada; Hanaya Okuda; Yutaro Okada; Kurama Okubo; Takeshi Akuhara; Akemi Noda; Takashi Tonegawa
A review of shallow slow earthquakes along the Nankai Trough
Earth, Planets and Space, 18 Oct. 2023
75, 164
[Reviewed], [Invited] - Hanaya Okuda; Manami Kitamura; Miki Takahashi; Asuka Yamaguchi
Frictional properties of the décollement in the shallow Nankai Trough: Constraints from friction experiments simulating in-situ conditions and implications for the seismogenic zone
Earth and Planetary Science Letters, Sep. 2023
621, 118357, 118357
[Reviewed]
Lead, Corresponding - Hanaya Okuda; Kenji Kawai; Hiroshi Sakuma
Atomic-scale interlayer friction of gibbsite is lower than brucite due to interactions of hydroxyls
American Mineralogist, Aug. 2023
108, 8, 1476, 1482
[Reviewed]
Lead, Corresponding - Hanaya Okuda; Takehiro Hirose; Asuka Yamaguchi
Potential Role of Volcanic Glass‐Smectite Mixtures in Slow Earthquakes in Shallow Subduction Zones: Insights From Low‐ to High‐Velocity Friction Experiments
Journal of Geophysical Research: Solid Earth, Jul. 2023
128, 8
[Reviewed]
Lead, Corresponding - Hanaya Okuda; André R. Niemeijer; Miki Takahashi; Asuka Yamaguchi; Christopher J. Spiers
Hydrothermal friction experiments on simulated basaltic fault gouge and implications for megathrust earthquakes
Journal of Geophysical Research: Solid Earth, Jan. 2023
128, 1, e2022JB025072
[Reviewed]
Lead, Corresponding - Riho Fujioka; Ikuo Katayama; Manami Kitamura; Hanaya Okuda; Takehiro Hirose
Depth profile of frictional properties in the inner Nankai accretionary prism using cuttings from IODP Site C0002
Progress in Earth and Planetary Science, Dec. 2022
9, 1, 31
[Reviewed] - Trishit Ruj; Goro Komatsu; Kenji Kawai; Hanaya Okuda; Zhiyong Xiao; Deepak Dhingra
Recent boulder falls within the Finsen crater on the lunar far side: An assessment of the possible triggering rationale
Icarus, May 2022
377, 114904, 114904
[Reviewed] - Gaku Kimura; Yohei Hamada; Suguru Yabe; Asuka Yamaguchi; Rina Fukuchi; Yukari Kido; Lena Maeda; Sean Toczko; Hanaya Okuda; Nobuhiro Ogawa; Hitoshi Morioka; Kohtaro Ujiie; Demian Saffer
Deformation Process and Mechanism of the Frontal Megathrust at the Nankai Subduction Zone
Geochemistry, Geophysics, Geosystems, Apr. 2022
23, 4, e2021GC009855
[Reviewed] - Hanaya Okuda; Matt J. Ikari; Alexander Roesner; Katja Stanislowski; Andre Hüpers; Asuka Yamaguchi; Achim J. Kopf
Spatial Patterns in Frictional Behavior of Sediments Along the Kumano Transect in the Nankai Trough
Journal of Geophysical Research: Solid Earth, Nov. 2021
126, 11
[Reviewed]
Lead, Corresponding - Hanaya Okuda; Ikuo Katayama; Hiroshi Sakuma; Kenji Kawai
Effect of normal stress on the frictional behavior of brucite: Application to slow earthquakes at the subduction plate interface in the mantle wedge
Solid Earth, Jan. 2021
12, 1, 171, 186
[Reviewed]
Lead, Corresponding - Hanaya Okuda; Kenji Kawai; Hiroshi Sakuma
First-principles Investigation of Frictional Characteristics of Brucite: An Application to Its Macroscopic Frictional Characteristics
Journal of Geophysical Research: Solid Earth, Oct. 2019
124, 10
[Reviewed]
Lead, Corresponding
Misc.
- 武村俊介; 濱田洋平; 奥田花也; 岡田悠太郎; 大久保蔵馬; 悪原岳; 野田朱美; 利根川貴志
A comprehensive review of shallow slow earthquakes in Nankai
日本地震学会秋季大会講演予稿集(CD-ROM), 2023
2023 - Asuka Yamaguchi; Yuichi Okuma; Hanaya Okuda; Ippei Yamamoto; Rina Fukuchi
Geological factors affecting broad spectrum of fault behavior in subduction zones
Chikyu Monthly, 2022
44, 11, 538, 542 - Hanaya Okuda
Influence of vacant sites within the layer of layered-structure minerals on their atomic-scale frictional properties
Supercomputing News, 2022
24, 2, 58, 61
Lead - Hanaya Okuda
Atomic-scale frictional characteristics of brucite (0001) plane
Supercomputing News, 2020
22, 3
Lead - Hanaya Okuda
A lateral-heterogeneity on atomic-scale frictional characteristics of brucite
Supercomputing News, 2019
21
Lead - Hanaya Okuda
Structure determination of the stacking disorder of brucite and its frictional characteristics
Supercomputing News, 2018
20
Lead
Presentations
- Rene Castillo; IODP Expedition 405 Scientists
Distinguishing Seismic and Landslide-Induced MTDs: Imaging and Machine Learning
JpGU, 25 May 2025 - Yasuyuki Nakamura; IODP Expedition 405 Scientists
Well and seismic reflection data integration/correlation at JTRACK drill sites
JpGU, 25 May 2025 - Yohei Hamada; IODP Expedition 405 Scientists
Depth-Temporal Strength profile of the shallow part of the Japan Trench plate boundary through analytical processing of drilling parameters
JpGU, 25 May 2025 - Takeru Yoshimoto; IODP Expedition 405 Scientists
Microfabric variation in sediments associated with initial subduction processes across the Japan Trench (IODP Exp. 405)
JpGU, 25 May 2025 - Minori Hagino; IODP Expedition 405 Scientists
Preliminary results of radiolarian biostratigraphy from IODP Expedition 405 JTRACK
JpGU, 25 May 2025 - Masao Iwai; IODP Expedition 405 Scientists
Prism structure around the shallow rupture zone of 2011 Tohoku earthquake: Initial results of IODP JTRACK Exp.405 diatom biostratigraphy
JpGU, 25 May 2025 - Taizo Uchida; IODP Expedition 405 Scientists
Changing rock magnetic properties driven by subduction processes recorded in paleomagnetic signatures
JpGU, 25 May 2025 - Miku Hidaka; Takahiro Suzuki; Keishi Okazaki; Hanaya Okuda; Takehiro Hirose
Fluid-rock reaction of olivine and granite gouges by frictional heating associated with fault slip
JpGU, 25 May 2025 - Takehiro Hirose; Junli Zhang; Hanaya Okuda; John D. Bedford; Matt J. Ikari; Anja Schleicher; Daniel R. Faulkner
Synthesis of the Laboratory Frictional Properties in a Shallow Subduction Zone: The Nankai Trough, Offshore SW Japan
JpGU, 25 May 2025 - Mayuko Sekikawa; Hanaya Okuda; Manami Kitamura; Miki Takahashi; Asuka Yamaguchi; Michiyo Sawai
Frictional properties of limestone from seamounts under high temperature and high pressure
JpGU, 25 May 2025 - Fuka Takuwa; Asuka Yamaguchi; Makoto Otsubo; Yusuke Shimura; Hanaya Okuda
Deformation mechanisms and stress field induced by seamount subduction: A case study at Funafuseyama Unit, Mino belt
JpGU, 25 May 2025 - Hanaya Okuda; Yuya Akamatsu; Ikuo Katayama; Shiki Machida; Naoto Hirano; Norikatsu Akizawa
Physical properties of basalt and peperite at petit-spot volcanoes: preliminary results
JpGU, 25 May 2025 - Hanaya Okuda; Akiko Yamaguchi
Frictional behavior of cation-exchanged biotite
JpGU, 25 May 2025 - Hanaya Okuda; Wataru Tanikawa; Yohei Hamada; Keishi Okazaki; John D. Bedford; Takehiro Hirose
Interaction between fluid phase transition induced by frictional heat, formation of off-fault damage, and styles of on-fault slip
JpGU, 25 May 2025 - Hanaya Okuda
Exploring initiation of megathrust earthquake from rock friction experiments
JpGU, 25 May 2025 - Ayumu Miyakawa; Hanaya Okuda; IODP Expedition 405 Scientists
Subduction of Horst-and-Graben Structures and Their Impact on Plate Boundary Faults: Numerical and Drilling Perspectives
JpGU, 25 May 2025 - Makoto Otsubo; Hanaya Okuda; Ayumu Miyakawa; Takehiro Hirose
Role of folds formed along plate boundaries in subduction zones as inelastic deformation of accretionary prism
JpGU, 25 May 2025 - Yuzuru Yamamoto; Hanaya Okuda; IODP Expedition 405 Scientists
Structural Characteristics of frontal prism at C0019, recovered by IODP Exp. 405
JpGU, 25 May 2025 - Shuichi Kodaira, ...,?IODP Expedition 405 Scientists
IODP Exp 405 JTRACK: Tracking Tsunamigenic Slip Across the Japan Trench
JpGU, 25 May 2025 - Kohtaro Ujiie, ...,?IODP Expedition 405 Scientists
Structural characteristics of Japan Trench plate boundary and splay fault zones in the region of shallow coseismic slip
JpGU, 25 May 2025 - Asuka Yamaguchi, ...,?IODP Expedition 405 Scientists
Lithological overview of IODP Expedition 405 (JTRACK) Site C0019 and C0026
JpGU, 25 May 2025 - Tsuyoshi Ishikawa, ...,?IODP Expedition 405 Scientists
Hydrogeology of the frontal prism near the Japan Trench revealed by geochemical analyses of IODP Expedition 405
JpGU, 25 May 2025 - Christine Regalla, ...,?IODP Expedition 405 Scientists
IODP Exp 405 reveals how to form a chaotic accretionary prism in the ‘non-accretionary’ Tohoku margin
JpGU, 25 May 2025 - Marianne Conin, ...,?IODP Expedition 405 Scientists
Stress estimation on the Japan Trench Plate Boundary Fault 13 years after the 2011 Tohoku-oki Earthquake
JpGU, 25 May 2025 - Yoshinori Kurata, ...,?IODP Expedition 405 Scientists
he Continuous Outreach Activities of JTRACK at Miraikan
JpGU, 25 May 2025 - Lena Murata, ...,?IODP Expedition 405 Scientists
Connecting Society with Ocean Science Drilling: Outreach from the IODP Expedition 405
JpGU, 25 May 2025 - Junli Zhang, Daniel R. Faulkner,?Hanaya Okuda, John D. Bedford, Matt J. Ikari, Anja M. Schleicher, Takehiro Hirose
Synthesis of the laboratory frictional properties of a major shallow subduction zone: the Nankai Trough
EGU 2025, 27 Apr. 2025 - Marianne Conin, ...,?IODP Expedition 405 Scientists
Preliminary assessment of IODP Expedition 405 JTRACK in the Japan trench: investigating slip and tracking fault healing after a Mw9 earthquake
EGU 2025, 27 Apr. 2025 - ur Schuba, IODP Expedition 405 Scientists
From Research Vessel to Comics: Inspiring Middle-Grade Readers Through IODP Expedition 405
EGU 2025, 27 Apr. 2025 - Miku Hidaka; Takahiro Suzuki; Keishi Okazaki; Hanaya Okuda; Takehiro Hirose
Fluid-rock reaction of olivine and granite gouges by frictional heating associated with fault slip
Metamorphic Rocks and Beyond Symposium, 12 Mar. 2025 - Minoru Hagino; Masao Iwai; Isao Motoyama; IODP Expedition 405 Scientists
An attempt to extract radiolarian fossils from chert using sodium hydroxide on board the drilling vessel Chikyu
16th Japanese Radiolarian Symposium, 15 Feb. 2025 - Tamara Jeppson; IODP Expedition 405 Scientists
Preliminary results from IODP Expedition 405: Understanding the time-spatial changes after the 2011 Tohoku-oki earthquake
2025 USGS Subduction Zone Science Meeting, 08 Jan. 2025 - Makoto Otsubo; Hanaya Okuda; Ayumu Miyakawa; Takehiro Hirose
Role of folds developed near plate boundaries in subduction zones as inelastic deformation
AGU 2024 Fall meeting, 09 Dec. 2024 - Dyuti Prakash Sarkar; Takehiro Hirose; Wataru Tanikawa; Yohei Hamada; Hanaya Okuda
Frictional evolution during multiple seismic-slip pulse experiments and its implications on earthquake energetics in gabbroic faults
AGU 2024 Fall meeting, 09 Dec. 2024 - Dyuti Prakash Sarkar; Hanaya Okuda; Yuto Sato; Niwa Yuka; Akira Ishikawa; Katsuyoshi Michibayashi; Jun-ichi Ando; Masako Yoshikawa; Shiki Machida; Naoto Hirano; Norikatsu Akizawa
Olivine microstructures and deformation mechanisms occurring at lithosphere-asthenosphere boundary: insights from petit-spot peridotite xenoliths along the Japan Trench
AGU 2024 Fall meeting, 09 Dec. 2024 - Dyuti Prakash Sarkar; Takehiro Hirose; Wataru Tanikawa; Yohei Hamada; Hanaya Okuda
Evolution of frictional properties during multiple slip-pulse experiments on gabbroic faults and its implications on earthquake energetics
International Joint Workshop on Slow-to-Fast Earthquakes 2024, 19 Sep. 2024 - Yohei Hamada; Nana Kamiya; Keisuke Nakamoto; Hanaya Okuda; Yoshitaka Hashimoto; Hinako Hosono
Formation Process and Physical Property Distribution of the Upper Prism in the Japan Trench
International Joint Workshop on Slow-to-Fast Earthquakes 2024, 19 Sep. 2024 - Yuya Akamatsu; Hanaya Okuda; Manami Kitamura; Michiyo Sawai
Role of mesoscale fractures in the scale dependences of seismic velocity and fluid flow in subduction zones
International Joint Workshop on Slow-to-Fast Earthquakes 2024, 19 Sep. 2024 - Hanaya Okuda; Jumpei Yoshioka
Influence of silica diagenesis on frictional behavior: possible controlling factor for seismic activities in the Japan Trench
International Joint Workshop on Slow-to-Fast Earthquakes 2024, 19 Sep. 2024 - Makoto Otsubo; Hanaya Okuda; Ayumu Miyakawa; Takehiro Hirose
Role of folds that develop near plate boundaries as inelastic deformation
International Joint Workshop on Slow-to-Fast Earthquakes 2024, 19 Sep. 2024 - Dyuti Prakash Sarkar; Takehiro Hirose; Wataru Tanikawa; Yohei Hamada; Hanaya Okuda
Multi-stage high-velocity slip experiments to elucidate frictional evolution and earthquake energetics in gabbroic faults
Annual Meeting of the Geological Society of Japan, 09 Sep. 2024 - Hanaya Okuda; Jumpei Yoshioka
Developement of direct shear assembly in triaxial apparatus for understanding frictional healing properties of quartz and siliceous sediments
Annual Meeting of the Geological Society of Japan, 09 Sep. 2024 - Nana Kamiya; Yohei Hamada; Hanaya Okuda; Keisuke Nakamoto; Taizo Uchida; Hinako Hosono; Yoshitaka Hashimoto; Yusuke Kubo
Characteristics of physical property and structure and the formation process of the Upper Prism in the Japan Trench
Annual Meeting of the Geological Society of Japan, 09 Sep. 2024 - Hanaya Okuda; Jumpei Yoshioka
Slide-hold-slide experiments on siliceous sediments toward understanding shallow slip processes in the Japan Trench
Gordon Research Seminar/Conference, 04 Aug. 2024 - Hiroki Ishikawa; Hideaki Sato; Hanaya Okuda; Takanobu Tsuihiji; Daniel L. Brinkman
Description of a “bite mark” on an isolated theropod tooth and its paleobiological implications
Annual Meeting of the Paleontological Society of Japan, 21 Jun. 2024 - Hanaya Okuda
Roles of clay minerals in seismogenesis in shallow subduction zones investigated by laboratory friction experiments.
61st Annual Meeting of The Clay Minerals Society and 5th Asian Clay Conference, 05 Jun. 2024, [Invited] - Asuka Yamaguchi; Rina Fukuchi; Yohei hamada; Hirokai Koge; Kiichiro Kawamura; Akira Ijiri; Hanaya Okuda; Mari Hamahashi; Konosuke Terui; Takahiro Hosokawa; Kanji Tatsumi; Juichiro Ashi; Takafumi Kasaya; Masataka Kinoshita; Koji Kameo; Yoshimi Kubota; Takeshi Tsuji; Kazuya Shiraishi; Gaku Kimura
Submersible survey along the Shionomisaki submarine canyon in the Nankai Trough: Preliminary results of R/V Yokosuka YK23-10S cruise
JpGU, 31 May 2024 - Takehiro Hirose; Wataru Tanikawa; Yohei Hamada; Hanaya Okuda
Mechanical evolution of gabbro faults during sequence of high-velocity slip pulses with frictional melting
JpGU, 28 May 2024 - Yohei Hamada; Nana Kamiya; Keisuike Nakamoto; Hanaya Okuda; Yoshitaka Hashimoto
ReCoRD program for Understanding the Formation Process and Physical Property Distribution of the Upper Prism in the Japan Trench (ReC23-02)
JpGU, 28 May 2024 - Hanaya Okuda; Wataru Tanikawa; Yohei Hamada; Keishi Okazaki; John Bedford; Takehiro Hirose
Abrupt host rock fragmentation induced by fluid phase transition during fault slip and its impact on earthquake energy partitioning
JpGU, 28 May 2024 - Hanaya Okuda; Yuya Akamatsu; Manami Kitamura; Michiyo Sawai
On physical properties of sedimentary rocks in the Susaki area, Shimanto accretionary complex: possible nature of the hanging wall of décollement in the seimogenic zone
JpGU, 28 May 2024 - Ayumu Miyakawa; Hanaya Okuda
Impacts of rheological variations along plate boundary in subduction zones for deep slow earthquakes
JpGU, 28 May 2024 - Shunsuke Takemura; Yohei Hamada; Hanaya Okuda; Yutaro Okada; Kurama Okubo; Takeshi Akuhara; Akemi Noda; Takashi Tonegawa
Toward a comprehensive understanding of shallow slow earthquakes: a review of key studies along the Nankai Trough and future perspectives
JpGU, 28 May 2024, [Invited] - Yuya Akamatsu; Hanaya Okuda; Manami Kitamura; Michiyo Sawai
Multiscale crack distribution in subsuction zone and its implication for scale dependence of seismic velocity
JpGU, 28 May 2024, [Invited] - Hanaya Okuda; André R. Niemeijer; Miki Takahashi; Asuka Yamaguchi; Christopher J. Spiers
Albitization due to interaction between seawater and seafloor basalt increases the potential of megathrust earthquakes in subduction zones
JpGU, 28 May 2024, [Invited] - Hanaya Okuda; Jumpei Yoshioka
Development of direct shear assembly in triaxial apparatus: preliminary results of slide-hold-slide tests on siliceous sediment
JpGU, 27 May 2024 - Hanaya Okuda
Frictional properties of clay minerals in shallow subduction zones
JpGU, 27 May 2024, [Invited] - Asuka Yamaguchi; Hitomi Mizuno; Hanaya Okuda; Takashi Sano; Akira Ijiri; Minoru Ikehara
Geochemical evidence of seawater percolation into subducting pelagic siliceous sediments
WRI-17/AIG-14, 18 Aug. 2023
