2018 - 2022 Magma fragmentation mechanism inducing explosive volcanic eruptions and a predicition model for volcanic eruptions
2019 - 2021 Structure and brittle failure of magma under deformation revealed by time-resolved X-ray diffraction
2016 - 2021 Development of near-real time volcanology based on in-situ observation experiments of shallow magmatic processes
2016 - 2019 A mechanism of explosive eruption of low-viscosity mafic magma
2015 - 2018 Initiation and eruption style of silicic volcanism: Roles of outgassing and rheology of crystal- and bubble-bearing magmas
2016 - 2017 高温変形実験による浅所貫入マグマ物性の研究
2015 - 2017 Sulfur partition among gas, melt, and crystal during magma decompression
2014 - 2016 Mechanism of fragmentation of inhomogeneous porous viscoelastic liquid in solid/fluid transition regime
2013 - 2016 Creation of Interface Petrology with a New Grain Liberation Method and X-ray CT Imaging
2012 - 2015 Strain localization in magma and its roles in volcanic eruptions
2009 - 2012 A study on the mechanism of shallow-level degassing of conduit magmas as a controlling factor of eruption styles
2009 - 2011 Mechanism and rate of magma degassing : Toward an understanding of bifurcation of explosive-effusive silicic volcanism
2006 - 2008 火山噴火の様式を支配する脱ガス率の定量化:マグマ中の気泡の変形とその効果
2004 - 2005 マグマの脱水速度論に基づくマグマ上昇時間スケールの定量化
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Papers (66)：
Tatsuhiro Michikami, Axel Hagermann, Akira Tsuchiyama, Yushi Otsuka, Michihiko Nakamura, Satoshi Okumura, Harumasa Kano, Junya Matsuno, Sunao Hasegawa. The influence of chondrules on sub-mm fragment shape distributions in Allende impact experiments. Icarus. 2024. 116068-116068
Ryosuke Sakurai, Michihiko Nakamura, Satoshi Okumura, Mayumi Mujin, Takayuki Nakatani. Vapor-phase crystallization from a hydrous silicate melt: an experimental simulation of diktytaxitic texture. Contributions to Mineralogy and Petrology. 2024. 179. 3
Takahiro Miwa, Hidemi Ishibashi, Ryunosuke Kazahaya, Satoshi Okumura, Masato Iguchi, Genji Saito, Atsushi Yasuda, Nobuo Geshi, Hiroyuki Kagi. Redox state of magma recorded in volcanic glass from an ash-forming eruption at Bromo volcano, Indonesia: Insights into the degassing process. Bulletin of Volcanology. 2023. 85. 9
Atsuko Namiki, Satoshi Okumura, Akio Goto, Tsutomu Yamada. In situ observation of glass-like fragmentation of high-temperature silicate melts generating fine ashes. Communications Earth & Environment. 2023
Satoshi Okumura, Kentaro Uesugi, Akio Goto, Atsuko Namiki, Kazuhisa Matsumoto, Tatsuya Sakamaki. Molecular-scale structural changes of silicate melts under tension revealed by time-resolved X-ray diffraction. Chemical Geology. 2023. 621. 121372-121372
Kana Amano, Kaoru Mogi, Tomoki Nakamura, Moe Matsuoka, Yoshihiro Furukawa, Satoshi Okumura. SPECTRAL AND WATER ANALYSIS OF EXPERIMENTALLY HEATED TAGISH LAKE AND CR CARBONACEOUS CHONDRITES WITH NO EFFECTS OF ADSORBED AND REHYDRATED WATER. METEORITICS & PLANETARY SCIENCE. 2018. 53. 6309-6309
Kaoru Mogi, Sayuri Yamashita, Tomoki Nakamura, Moe Matsuoka, Satoshi Okumura, Yoshihiro Furukawa. DEHYDRATION PROCESS OF EXPERIMENTALLY HEATED MURCHISON WITHOUT ANY EFFECTS OF ADSORBED AND REHYDRATED WATER. METEORITICS & PLANETARY SCIENCE. 2017. 52. A240-A240
Otsuki Shizuka, Nakamura Michihiko, Okamura Satoshi, Sasaki Osamu. B2-26 Textural relaxation of melt foam due to surface tension : Sample size dependence. Programme and abstracts the Volcanological Society of Japan. 2014. 2014. 85-85
Shimizu Hikaru, Okumura Satoshi, Nakamura Michihiko. P2-10 Mechanism of transition from Plinian eruption to lava effusion inferred from petrographic study on pumice and juvenile lithic fragment from Taisho eruption of Sakurajima volcano. Programme and abstracts the Volcanological Society of Japan. 2014. 2014. 162-162
