研究者情報
researchmap URL
経歴（RM）
研究活動情報
論文
- 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, 2025年07月01日
12, 1
［査読有り］ - 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, 2025年05月
［査読有り］ - 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, 2025年01月
107946, 107946
［査読有り］
筆頭著者 - Yuya Akamatsu; Hanaya Okuda; Manami Kitamura; Michiyo Sawai
Mesoscale fractures control the scale dependences of seismic velocity and fluid flow in subduction zones
Tectonophysics, 2024年12月
230606, 230606
［査読有り］
筆頭著者 - 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, 2024年12月
108262, 108262
［査読有り］
筆頭著者 - Ikuo Katayama; Yuya Akamatsu
Seismic discontinuity in the Martian crust possibly caused by water-filled cracks
Geology, 2024年09月24日
［査読有り］ - Eranga Jayawickrama; Yuya Akamatsu; Ikuo Katayama
Brittle Deformation of Damaged Mafic and Ultramafic Rocks and Their Implications on Plate Bending
Geophysical Research Letters, 2024年04月18日
51, 8
［査読有り］ - 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, 2024年04月
470-471, 107500, 107500
［査読有り］ - 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, 2024年03月28日
［査読有り］ - 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, 2023年06月
128, 6
［査読有り］ - 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, 2023年06月
24, 6
［査読有り］ - 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, 2023年04月12日
75, 1
［査読有り］ - 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, 2022年06月16日
49, 11
［査読有り］ - 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, 2021年09月
814
［査読有り］ - 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, 2021年08月
568
［査読有り］ - Yuya Akamatsu; Kumpei Nagase; Ikuo Katayama
Non-Dilatant Brittle Deformation and Strength Reduction of Olivine Gabbro due to Hydration
MINERALS, 2021年07月
11, 7
［査読有り］ - 長瀨 薫平; 片山 郁夫; 畠山 航平; 赤松 祐哉; 岡﨑 啓史; 阿部 なつ江; 道林 克禎; 横山 正
オマーンオフィオライト陸上掘削試料を用いたハードロック掘削における空隙率測定法の再検討
地質学雑誌, 2020年12月15日
126, 12, 713, 717
［査読有り］ - 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, 2020年08月
125, 8
［査読有り］ - 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, 2019年04月
114, 2, 79, 86
［査読有り］
講演・口頭発表等
- 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, 2024年09月 - 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, 2024年09月 - Akamatsu, Y.
Upscaling physical properties from laboratory to crustal scales: Insights from the Oman Drilling Project
Hardrock Drilling Science Workshop Summer 2024, 2024年08月 - 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, 2024年05月, ［招待有り］
