Researcher Information
researchmap URL
Research History
Education
- Apr. 2020 - Mar. 2023, Hiroshima University, Graduate School of Advanced Science and Engineering, 地球惑星システム学プログラム
- Apr. 2018 - Mar. 2020, Hiroshima University, Graduate School of Science, 地球惑星システム学専攻
- Apr. 2014 - Mar. 2018, Hiroshima University, Faculty of Science, Department of Earth and Planetary Systems Science
Research activity information
Papers
- 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, 1
[Reviewed] - Tomohiro Ito; Ikuo Katayama; Yuya Akamatsu; Kazuki Matsuyama; Masakazu Fujii; Yumiko Harigane; Yasuhiko Ohara
Onboard measurements of the seismic velocity and electrical resistivity of dredged samples from the Southern Mariana region collected during cruise KH-23-9
Journal of Mineralogical and Petrological Sciences, May 2025
[Reviewed] - Y. Akamatsu; T. Kuwatani; R. Oyanagi
Alteration processes of mantle peridotite in the Samail ophiolite inferred from independent component analysis of rock physical properties
Lithos, Jan. 2025
107946, 107946
[Reviewed]
Lead - Yuya Akamatsu; Hanaya Okuda; Manami Kitamura; Michiyo Sawai
Mesoscale fractures control the scale dependences of seismic velocity and fluid flow in subduction zones
Tectonophysics, Dec. 2024
230606, 230606
[Reviewed]
Lead - Yuya Akamatsu; Takeshi Suzuki; Noriko Tada; Kazuki Sawayama; Hiroshi Ichihara; Ikuo Katayama; Genya Sakamoto; Yuhji Yamamoto; Fukashi Maeno; Kenta Yoshida
Variations in pore structure in subaerial lava flows at Nishinoshima, Japan, inferred from physical properties
Journal of Volcanology and Geothermal Research, Dec. 2024
108262, 108262
[Reviewed]
Lead - Ikuo Katayama; Yuya Akamatsu
Seismic discontinuity in the Martian crust possibly caused by water-filled cracks
Geology, 24 Sep. 2024
[Reviewed] - Eranga Jayawickrama; Yuya Akamatsu; Ikuo Katayama
Brittle Deformation of Damaged Mafic and Ultramafic Rocks and Their Implications on Plate Bending
Geophysical Research Letters, 18 Apr. 2024
51, 8
[Reviewed] - Kazumasa Tanimoto; Yuya Akamatsu; Ikuo Katayama
Electrical resistivity, seismic velocity, and porosity of crustal rocks from the Oman ophiolite under brine-saturated ocean floor conditions
Lithos, Apr. 2024
470-471, 107500, 107500
[Reviewed] - Yuya Akamatsu; Tatsu Kuwatani; Ikuo Katayama
Spatial Heterogeneity of Pore Structure in the Crustal Section of the Samail Ophiolite: Implications for High VP/VS Anomalies in Subducting Oceanic Crust
Geophysical Research Letters, 28 Mar. 2024
[Reviewed] - Yuya Akamatsu; Kumpei Nagase; Natsue Abe; Keishi Okazaki; Kohei Hatakeyama; Ikuo Katayama
Cross‐Property Relationship Between Electrical Resistivity and Elastic Wave Velocity of Crustal Rocks From the Oman Drilling Project Hole GT3A: Implications for in Situ Geophysical Properties of Oceanic Crust
Journal of Geophysical Research: Solid Earth, Jun. 2023
128, 6
[Reviewed] - Yuya Akamatsu; Ikuo Katayama; Keishi Okazaki; K. Michibayashi
Paleo‐Permeability Structure of the Crustal Section of the Samail Ophiolite Based on Automated Detection of Veins in X‐Ray CT Core Images From the Oman Drilling Project
Geochemistry, Geophysics, Geosystems, Jun. 2023
24, 6
[Reviewed] - Ikuo Katayama; Yu Aoi; Kazumasa Tanimoto; Yuya Akamatsu; Kazuki Sawayama
Simultaneous electrical resistivity and elastic wave velocity measurements during triaxial deformation of granite under brine-saturated conditions
Earth, Planets and Space, 12 Apr. 2023
75, 1
[Reviewed] - Kumpei Nagase; Kohei Hatakeyama; Keishi Okazaki; Yuya Akamatsu; Natsue Abe; Katsuyoshi Michibayashi; Ikuo Katayama
Simultaneous Measurements of Elastic Wave Velocity and Porosity of Epidosites Collected From the Oman Ophiolite: Implication for Low VP/VS Anomaly in the Oceanic Crust
Geophysical Research Letters, 16 Jun. 2022
49, 11
[Reviewed] - Ikuo Katayama; Natsue Abe; Keishi Okazaki; Kohei Hatakeyama; Yuya Akamatsu; Katsuyoshi Michibayashi; Marguerite Godard; Peter Kelemen
Crack geometry of serpentinized peridotites inferred from onboard ultrasonic data from the Oman Drilling Project
TECTONOPHYSICS, Sep. 2021
814
[Reviewed] - Yuya Akamatsu; Ikuo Katayama; Takashi Tonegawa
Changes in elastic wave velocity during brittle deformation of gabbro and peridotite: Implications for oceanic Moho reflectivity
EARTH AND PLANETARY SCIENCE LETTERS, Aug. 2021
568
[Reviewed] - Yuya Akamatsu; Kumpei Nagase; Ikuo Katayama
Non-Dilatant Brittle Deformation and Strength Reduction of Olivine Gabbro due to Hydration
MINERALS, Jul. 2021
11, 7
[Reviewed] - Nagase Kumpei; Katayama Ikuo; Hatakeyama Kohei; Akamatsu Yuya; Okazaki Keishi; Abe Natsue; Michibayashi Katsuyoshi; Yokoyama Tadashi; Oman Drilling Project Science Party
On porosity determination for hard rock drilling using core samples collected by the Oman Drilling Project
The Journal of the Geological Society of Japan, 15 Dec. 2020
126, 12, 713, 717
[Reviewed] - Ikuo Katayama; Natsue Abe; Kohei Hatakeyama; Yuya Akamatsu; Keishi Okazaki; Ole Ivar Ulven; Gilbert Hong; Wenlu Zhu; Benoit Cordonnier; Katsuyoshi Michibayashi; Marguerite Godard; Peter Kelemen
Permeability Profiles Across the Crust-Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Aug. 2020
125, 8
[Reviewed] - Yuya Akamatsu; Kohei Hatakeyama; Ikuo Katayama
Contrasting dilatant behaviors of mafic and ultramafic rocks based on triaxial deformation experiments
JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES, Apr. 2019
114, 2, 79, 86
[Reviewed]
Presentations
- Akamatsu, Y.; Okuda, H.; Kitamura, M.; Sawai, M.
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, Sep. 2024 - 赤松祐哉; 大柳良介; 桑谷立
オマーンオフィオライト蛇紋岩の物性データを用いた独立成分分析によるマントル変質プロセスの抽出
日本地質学会第131年学術大会, Sep. 2024 - Akamatsu, Y.
Upscaling physical properties from laboratory to crustal scales: Insights from the Oman Drilling Project
Hardrock Drilling Science Workshop Summer 2024, Aug. 2024 - Akamatsu, Y.; Okuda, H.; Kitamura, M.; Sawai, M.
〔主要な業績〕Multiscale crack distribution in subduction zone and its implication for scale dependence of seismic velocity
Japan Geoscience Union Meeting 2024, May 2024, [Invited]
