Research

Publications

Fuminori Tsuchiya, Go Murakami, Atsushi Yamazaki, Kazuo Yoshioka, Masato Kagitani, Tomoki Kimura, Chihiro Tao, Ryoichi Koga, Hajime Kita, Jun Kimura, Shuya Tan, Kei Masunaga, Shotaro Sakai, Mizuki Yoneda, Masaki Kuwabara, Shingo Kameda, and Ichiro Yoshikawa, (2025). Results from Hisaki and prospects for LAPYUTA observations of the Jupiter System, EGU General Assembly 2025, EGU25-14544, 2025, Vienna, Austria. doi.org/10.5194/egusphere-egu25-14544
*Shuya Tan, Yasuhito Sekine, Takazo Shibuya, (2025). Metal Limiting Habitability in Enceladus? Availability of Trace Metals for Methanogenic Life in Hydrothermal Fluids, Journal of Geophysical Research: Planets, 130, e2024JE008591. doi.org/10.1029/2024JE008591
Fuminori Tsuchiya, Go Murakami, Atsushi Yamazaki, Shingo Kameda, Tomoki Kimura, Ryoichi Koga, Kei Masunaga, Shotaro Sakai, Masahiro Ikoma, Akifumi Nakayama, Masami Ouchi, Masaomi Tanaka, Shin Toriumi, Masato Kagitani, Kazuo Yoshioka, Chihiro Tao, Hajime Kita, Hidenobu Yajima, Hideo Sagawa, Hiromu Nakagawa, Hitoshi Hamori, Jun Kimura, Keigo Enya, Kosuke Namekata, Manabu Yamada, Masaki Kuwabara, Naoki Terada, Naoya Ozaki, Norio Narita, Sae Aizawa, Seiko Takagi, Shinitiro Sakai, Shohei Aoki, Shoya Matsuda, Shuya Tan, Takahiro Sumi, Takanori Kodama, Takashi Moriya, Takatoshi Shibuya, Takehiko Satoh, Taro Kawano, Nozomu Tominaga, Toshifumi Shimizu, Yasumasa Kasaba, Yoichi Yatsu, Yoshiaki Ono, Yudai Suzuki, Yuichi Matsuda, Yuki Harada, Yuta Notsu, (2024). Overview of the LAPYUTA mission (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly), Proceedings Volume 13093, Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray; 130930I (2024) SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan doi.org/10.1117/12.3017298
*Shuya Tan, Yasuhito Sekine, Takashi Kikuchi, Hisayuki Suematsu, Tetsuya Hama, Yoshio Takahashi, (2024). Comparing the radiolytic oxidation of sulfur and chloride within ice on Europa and Mars, Icarus, 410, 115873. doi.org/10.1016/j.icarus.2023.115873
Frank Postberg, Yasuhito Sekine, Fabian Klenner, Christopher R. Glein, Zenghui Zou, Bernd Abel, Kento Furuya, Jon K. Hillier, Nozair Khawaja, Sascha Kempf, Lenz Noelle, Takuya Saito, Juergen Schmidt, Takazo Shibuya, Ralf Srama, Shuya Tan, (2023). Detection of Phosphates Originating from Enceladus' Ocean, Nature, 618, 489–493. doi.org/10.1038/s41586-023-05987-9
Eito Hirai, Yasuhito Sekine, Naizhong Zhang, Natsumi Noda, Shuya Tan, Yoshio Takahashi, Hiroyuki Kagi, (2023). Rapid Aggregation and Dissolution of Organic Aerosols in Liquid Methane on Titan, Geophysical Research Letters, 50, e2023GL103015. doi.org/10.1029/2023GL103015
Natsumi Noda, Yasuhito Sekine, Shuya Tan, Sakiko Kikuchi, Takazo Shibuya, Minako Kurisu, Yoshio Takahashi, Keisuke Fukushi, Elizabeth B. Rampe, (2022). Characterization of groundwater chemistry beneath Gale Crater on early Mars by hydrothermal experiments, Icarus, 386, 115149. doi.org/10.1016/j.icarus.2022.115149
*Shuya Tan, Yasuhito Sekine, Masayuki Kuzuhara, (2022). Spatially Resolved Observations of Europa's Surface with Subaru/IRCS at 1.0–1.8 μm: Upper Limits to the Abundances of Hydrated Cl-bearing Salts, The Planetary Science Journal, 3, 70. doi.org/10.3847/PSJ/ac596c
*Shuya Tan, Yasuhito Sekine, Takazo Shibuya, Chihiro Miyamoto, Yoshio Takahashi, (2021). The role of hydrothermal sulfate reduction in the sulfur cycles within Europa: Laboratory experiments on sulfate reduction at 100 MPa, Icarus, 357, 11422. doi.org/10.1016/j.icarus.2020.114222

Research Interests & Topics

Geochemical evolutions and cycles of water-related bodies (Earth, Mars, Europa, Ganymede, Enceladus, Ceres, etc.)

- Investigations of water-rock interactions through laboratory experiments and geochemical modeling
  - Behavior of sulfur species within hydrothermal environments of Europa (Jupiter's icy satellite) [エウロパ内部海の熱水環境]
  - Dissolutions of phosphate minerals within the subsurface ocean of Enceladus (Saturn's icy satellite) [土星衛星エンセラダスの海に生命必須元素リンが異常濃集]
  - Availability of trace metals in the ocean of Enceladus [土星衛星エンセラダスの海は生命にとって金属不足？] [Are metals depleted for life in the ocean of Enceladus?]
- Physicochemical properties of Europa's surface materials

Constraints of chemical compositions of surface materials through telescope observations

Investigations of oxidations of surface materials with laboratory experiments

- Behavior of brine in frozen environments beneath surfaces of icy satellites and ancient Mars

Field research of elemental distribution in frozen saline lakes (e.g., Olgoy lake in Mongolia)

Olgoy lake in winter Mongolia

(Dec. 2022)

Presentations

In International conferences

2025: Tsuchiya、 F., Murakami, G., Yamazaki, A., Yoshioka, K., Kagitani, M., Kimura, T., Tao, C., Koga, R., Kita, H., Kimura, J., Tan, S., Masunaga, K., Sakai, S., Yoneda, M., Kuwabara, M., Kameda, S., Yoshikawa, I.Results from Hisaki and prospects for LAPYUTA observations of the Jupiter System, EGU General Assembly 2025 (Vienna. 2025.4)

2024: Tan, S. "Role of hydrothermal activity on extraterrestrial ocean chemistry in the Solar system" CO World workshop: Nano to Planets: Approaches to understanding how life began (Tokyo. 2024.11) Invited
2024: Tsuchiya, F., G. Murakami, A. Yamazaki, S. Kameda, T. Kimura, R. Koga, K. Masunaga, S. Sakai, M. Ikoma, A. Nakayama, M. Ouchi, M. Tanaka, S. Toriumi, M. Kagitani, K. Yoshioka, C. Tao, H. Kita, H. Yajima, H. Sagawa, H. Nakagawa, H. Hamori, J. Kimura, K. Enya, K. Namekata, M. Yamada, M. Kuwabara, N. Terada, N. Ozaki, N. Narita, S. Aizawa, S. Takagi, S. Sakai, S. Aoki, S. Matsuda, S. Tan, T. Sumi, T. Kodama, T. Moriya, T. Shibuya, T. Satoh, T. Kawano, N. Tominaga, T. Shimizu, Y. Kasaba, Y. Yatsu, Y. Ono, Y. Suzuki, Y. Matsuda, Y. Harada, Y. Notsu, "Overview of the LAPYUTA mission (Life-environmentology, Astronomy, and PlanetarY Ultraviolet Telescope Assembly)" SPIE Astronomical Telescopes + Instrumentation (Yokohama. 2024.6)
2024: Tan, S., Y. Sekine, T. Shibuya "Bioessential trace metals in Enceladus as possible limiting factor for activity of methanogenic life" AbSciCon 2024 (Providence. 2024.5) Oral

2023: Postberg, F., Y. Sekine, C. Glein, F. Klenner, Z. Zou, B. Abel, K. Furuya, J. Hillier, N. Khawaja, S. Kempf, L. Noelle, T. Saito, J. Schmidt, T. Shibuya, R. Srama, S. Tan, "Detection of phosphates in ice grains from Enceladus' ocean and implications for Europa" 2023 Joint AAS/DPS–EPSC Meeting (San Antonio, USA)
2023: Hirai, E., Y. Sekine, N. Zhang, N. Noda, S. Tan, Y. Takahashi, H. Kagi, "Rapid aggregation of organic aerosols by liquid methane as a formation mechanism of dune particles on Titan" 17th International Symposium on Water-Rock Interaction / 14th International Symposium on Applied Isotope Geochemistry (Sendai. 2023. 8)
2023: Craddock, M. L., Y. Sekine, S. Tan, Y. Li, K. Aratsu, R. Yi, "Chemical evolution driven by hydrothermal-freeze cycles within Enceladus" 17th International Symposium on Water-Rock Interaction / 14th International Symposium on Applied Isotope Geochemistry (Sendai. 2023. 8)
2023: Mizukami, Y., S. Tan, Y. Sekine, T. Shibuya, T. Saito, Y. Takahashi, "Diversity of hydrothermal systems in various dissolved carbonate and sulfate in seawater: Implications for Earth’s evolution" 17th International Symposium on Water-Rock Interaction / 14th International Symposium on Applied Isotope Geochemistry (Sendai. 2023. 8)
2023: Tan, S., Y. Sekine, T. Shibuya "Investigations for availability of trace elements in ocean of Enceladus through hydrothermal experiments and geochemical modeling" 17th International Symposium on Water-Rock Interaction / 14th International Symposium on Applied Isotope Geochemistry (Sendai. 2023. 8) Oral
2023: Hirai, E., Y. Sekine, N. Zhang, N. Noda, S. Tan, Y. Takahashi, H. Kagi, "Rapid aggregation and dissolution of organic aerosols in liquid methane on Titan" Titan Through Time VI (Paris, France. 2023.6)
2023: Postberg, F., Y. Sekine, F. Klenner, C. R. Glein, Z. Zou, B. Abel, K. Furuya, J. K. Hillier, N. Khawaja, S. Kempf, L. Noelle, T. Saito, J. Schmidt, T. Shibuya, R. Srama, S. Tan, "Detection of phosphate in Enceladus’ ocean with implications for geochemistry and habitability in the outer solar system" EGU General Assembly 2023 (Vienna, Austria)

2022: Craddock, M., Y. Sekine, S. Tan, Y. Li, K. Aratsu, R. Yi, "Chemical Evolution Driven by Hydrothermal-Freeze Cycles within Enceladus" AGU Fall Meeting 2022 (Chicago, USA. 2022.12)
2022: Sekine, Y., F. Postberg, F. Klenner, C. R. Glein, Z. Zou, B. Abel, J. Hillier, N. Khawaja, S. Kempf, L. Nölle, T. Saito, J. Schmidt, T. Shibuya, R. Srama, S. Tan, "Detection of Phosphate in Enceladus' Ocean: Its Implications for Geochemistry and Habitability" AGU Fall Meeting 2022 (Chicago, USA. 2022.12)
2022: Fortier, V. M., V. Debaille, V. Dehant, B. Bultel, D. P. Debecker, Y. Sekine, S. Tan, N. Noda, "Serpentinization and methanation in martian underground like conditions: an abiotic origin for CH4 on Mars?" 2022 Goldschmidt Conference (Honolulu, USA)
2022: Tan, S, Y. Sekine, K. Furuya, T. Shibuya "High availability of bioessential elements for methanogens in oceans of Enceladus inferred from hydrothermal experiments using carbonaceous chondrites" AbSciCon 2022 (Atlanta. 2022. 5) Oral
2022: Fortier, V., V. Debaille, V. Dehant, B. Bultel, D. Debecker, P. P. Melo Bravo, Y. Sekine, S. Tan, N. Noda "Experimental study of serpentinization and abiotic CH production in martian conditions" 53rd Lunar and Planetary Science Conference (The Woodlands, USA)
2022: Yoda, M., Y. Sekine, T. Shibuya, S. Kikuchi, S. Tan, "Formation of bright materials on Ceres by explosive cryovolcanic eruption of deep subsurface brines" 53rd Lunar and Planetary Science Conference (The Woodlands, USA)

2021: Tan, S, Y. Sekine, H. Suematsu, T, Kikuchi, T. Hama, Y. Takahashi "Selective oxidation on Europa’s surface: Insights for supply of oxidants into the subsurface ocean" AGU Fall Meeting 2021 (Virtual. 2021. 12) Oral
2021: Sekine, Y., S. Tan, Y. Aoyama, T. Tanigawa, M. Ikoma, "What makes the chemical diversity of ocean worlds in the Solar System?" Goldschmidt 2021 (Virtual, 2021.07) Oral
2021: Tan, S, Y. Sekine, M. Kuzuhara, H. Kurokawa, C. M. Dalle Ore, D. P. Cruikshank "Investigations of grain size and abundance of NaCl on Europa’s surface through telescope observations and laboratory experiments: Implications for material transport from the interior to surface" Goldschmidt 2021 (Virtual, 2021.07) Oral

2020: Suga, H., Y. Takeichi, S. Yamashita, D. Wakabayashi, S. Tan, M. Kimura, Y. Takahashi, Y. Sekine, "Carbon XANES library of the heat-treated and impacted IOM simulant applied to the extraterrestrial organic matter" AGU Fall Meeting 2020 (Virtual, 2020.12)
2020: Sugiuchi, M., Y. Sekine, S. Tan, N. Noda, R. Ramirez, Y. Takahashi, "Effective formation of Al-rich surface clays through highly acidic water activity on early Mars" AGU Fall Meeting 2020 (Virtual, 2020.12)
2020: Tan, S, Y. Sekine, M. Kuzuhara, T. Hama, Chemistry and spectroscopy of Europa’s surface materials: Insights from laboratory experiments and infrared observations, AGU Fall Meeting 2020 (Virtual, 2020.12) Oral
2020: Sugiuchi, M., Y. Sekine, S. Tan, N. Noda, Y. Takahashi, R. Ramirez "Effective formation of Al-rich surface clays through highly acidic water activity on early Mars" Goldschmidt 2020 (Virtual)
2020: Sekine, Y., S. Kamata, S. Tan, S. Azuma, I. Katayama, Y. Saito, K. Asamura, K. Enya, J. Haruyama, Y. Kasaba, Y. Kasai, A. Matsuoka, "Geophysical and astrobiological perspectives for future spacecraft missions to Jovian icy moons" JpGU-AGU Joint Meeting 2020: Virtual (Virtual, 2020.07)
2020: Suga, H., S. Kikuchi, S. Tan, S. Yamashita, Y. Takeichi, D. Wakabayashi, M. Kimura, Y. Takahashi, Y. Sekine "The Preparation for Return Sample from Asteroid Ryugu by STXM at KEK-PF" JpGU-AGU Joint Meeting 2020: Virtual (Virtual, 2020.07)
2020: Sugiuchi, M., Y. Sekine, S. Tan, N. Noda, Y. Takahashi, R. Ramirez, "Effective formation of Al-rich surface clays through acidic water activity on early Mars" JpGU-AGU Joint Meeting 2020: Virtual (Virtual, 2020.07)
2020: Tan, S, Y. Sekine, M. Kuzuhara, T. Hama, T. Kurosaki, T. Kikuchi, H. Suematsu, T. Hama, Y. Takahashi, Constraint of salt compositions on Europa’s surface from observations using Subaru telescope and laboratory experiments, JpGU-AGU Joint Meeting 2020: Virtual (Virtual, 2020.07) Poster

2019: Noda, N., Y. Sekine, S. Tan, T. Shibuya, H. Genda, R. Wordsworth, "Semiarid climate and upwelling hydrothermal groundwater as a driving force for silica-rich deposits in early Gale lakes on Mars" AGU Fall Meeting 2019 (San Francisco, USA, 2019.12)
2019: Tan, S, Y. Sekine, M. Kuzuhara, T. Hama, Y. Takahashi, Chloride oxidation on Europa? Constraints from laboratory experiments and infrared observations using Subaru telescope, AGU Fall Meeting 2019 (San Francisco, USA, 2019.12) Poster
2019: Tan, S, Y. Sekine, M. Kuzuhara, Observations of Europa’s surface materials with Subaru/IRCS and its comparison with laboratory experiments, Subaru Telescope 20th Anniversary Conference (Kona, USA, 2019. 11) Oral
2019: Noda, N., Y. Sekine, S. Tan, T. Shibuya, H. Genda, "Groundwater upwelling and silica deposition within Gale in (semi-)arid climate on early Mars" Goldschmidt 2019 (Barcelona, Spain, 2019.8)
2019: Tan, S, Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, Hydrothermal sulfate reduction as a possible sink of sulfate in Europa, Goldschmidt 2019 (Barcelona, Spain, 2019.8) Oral
2019: Noda, N., Y. Sekine, S. Tan, H. Genda, T. Shibuya, "Groundwater upwelling and redox-based habitability within Gale crater lake on early Mars" AbGradCon 2019 (Salt Lake City, USA)
2019: Tan, S, Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, Sulfate reduction under hydrothermal condition in Europa’s ocean, The 1st international workshop for Aquaplanetology (Tokyo, 2019.3) Poster
2019: Noda, N., Y. Sekine, S. Tan, T. Shibuya, H. Genda, "Groundwater Upwelling into a Gale Crater Lake on Early Mars: A Source of Silica and Ferrous Iron" 50th Annual Lunar and Planetary Science Conference (The Woodlands, USA)

2018: Sekine, Y., T. Shibuya, S. Tan, C. Miyamoto, Y. Takahashi, "Fate of sulfate in Europa's ocean: hydrothermal reactions, experimental insights, and implications for future missions" 42nd COSPAR Scientific Assembly (Pasadena, USA, 2018.7)
2018: Tan, S., Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, The role of hydrothermal reactions in determining the fate of sulfate in Europa’s ocean, Asia Oceania Geosciences Society 15th Annual Meeting, (Honolulu, USA, 2018.6) Oral

2017: Tan, S., Y. Sekine, Experimental investigation on hydrothermal reactions within large icy satellites and Martian crustal rocks using a 130-MPa hydrothermal autoclaves, JpGU-AGU Joint Meeting 2017(Chiba, 2017.5) Poster

2016: Tan, S., S. Sasaki, "Stability of Titan's atmosphere and surface" International Workshop on "Exoplanets and Disks: Their Formation and Diversity III" (Ishigaki, 2016.2) Poster

In Domestic conferences (Japan)

2025: 吉岡和哉, 木村智樹, 盧清揚, 森岡将生, 土屋史紀, 丹秀也, Europa’s Tenuous Sodium Atmosphere Formation and Surface Chemical Composition Uncovered by Plasma Irradiation Experiment on Sodium Sulfate, (千葉, 2025.05)
2025: 奥本海友, 木村智樹, 仲内悠祐, 土屋史紀, 丹秀也, 木村淳, Lifetime of Europa’s Surface Chloride Salts Estimated by Laboratory Plasma Irradiation Experiments, (千葉, 2025.05)
2025: 盧清揚, 木村智樹, 森岡将生, 吉岡和哉, 土屋史紀, 丹秀也, Investigation of the Carbon dioxide Production Process on Europa's Surface Based on Charged Particle Irradiation Experiments on Carbonates, (千葉, 2025.05)
2025: Tan, S., Shibuya, T., Saito, T., Kashiwabara, T., Laboratory experiments using sulfate solutions and basaltic rocks: Implications for hydrothermal reactions in Europa, JpGU2025 (千葉, 2025.05)　口頭
2025: 丹秀也, 福士圭介, Baasansuren Gankhurel, 北島卓磨, 深谷創, Davaadorj Davaasuren, 依田優大, 高橋嘉夫モンゴルアルカリ塩湖における低温下での重金属濃縮と吸着作用, JpGU2025 (千葉, 2025.05)　口頭
2025: 丹秀也, 渋谷岳造, 齋藤拓也, 柏原輝彦, 氷衛星の海洋は生命に対して金属が不足している可能性, 第49回生命の起原および進化学会学術講演会 (横浜, 2025.03)　口頭
2025: 飯野孝浩, 谷口琴美, 佐川英夫, 丹秀也, 高橋茂, Suggested presence of Cyanodiacetylene(HC5N) in the middle atmosphere of Titan, 第26回惑星圏シンポジウム (SPS2025)
2025: 奥本海友, 木村智樹, 大槻美佐子, 星野亮, 小林愛結, 仲内悠祐, 土屋史紀, 丹秀也, 木村淳, プラズマ照射実験に基づくエウロパ表層の塩化物塩の枯渇時間評価, 第26回惑星圏シンポジウム (SPS2025)
2025: 土屋史紀, 木村智樹, 木村淳, 古賀亮一, 丹秀也, 鍵谷将人, 吉岡和夫, 垰千尋, 佐川英夫, 高木聖子, 北元, 村上豪, 山崎敦, LAPYUTAによる木星系探査, 第26回惑星圏シンポジウム (SPS2025)
2025: 丹秀也, 関根康人, 渋谷岳造, 齋藤拓也, 氷衛星海底での化学反応の実験室再現: 生命必須微量金属を含む海洋組成への示唆, 第26回惑星圏シンポジウム (SPS2025) (仙台, 2025.03)　ポスター

2024: 丹秀也, 関根康人, 渋谷岳造, 微量金属濃度によるエンセラダスでの生命活動の制限, 日本惑星科学会秋季講演会 (福岡, 2024.09)　ポスター
2024: 平井英人, 関根康人, 筒井智嗣, 肥後祐司, 井藤浩志, 定金裕朔, 安井勇気, 伊藤万喜子, 中嶋健, 杉本宜昭, 粕谷素洋, 奥住聡, 丹秀也, 落合葉子, Yamei Li, 鍵裕之, 原始惑星系円盤における有機物の固着特性の化学構造・温度依存性, 日本地球化学会第71回年会 (金沢, 2024.09)
2024: 丹秀也, 関根康人, 渋谷岳造, 土星衛星エンセラダスの海洋中での生命活動が微量金属濃度に制限される可能性, 日本地球化学会第71回年会 (金沢, 2024.09)　ポスター
2024: 小林愛結, 木村智樹, 星野亮, 大槻美沙子, 奥本海友, Sadgrove Mark, 仲内悠祐, 土屋史紀, 丹秀也, 木村淳, プラズマ照射実験に基づくエウロパ内部海起源NaClの表層での結晶構造の解明, 原子衝突学会第49回年会 (奈良, 2024.08)
2024: Craddock, M., Y. Sekine, F. Postberg, N. Khawaja, S. Tan, Y. Li, M. Napoleoni, R. Yi, Understanding the origins of complex organics in Enceladus’ ocean, JpGU2024 (千葉, 2024.05)
2024: 奥本海友, 木村智樹, 大槻美沙子, 星野亮, 小林愛結, 仲内悠祐, 土屋史紀, 丹秀也, 木村淳, 塩化マグネシウムへのプラズマ照射実験によるエウロパ表層塩化物塩の寿命評価, JpGU2024 (千葉, 2024.05)
2024: 小林愛結, 木村智樹, 星野亮, 大槻美沙子, 奥本海友, S. Mark, 仲内悠祐, 土屋史紀, 丹秀也, 木村淳, プラズマ照射実験に基づくエウロパ内部海起源NaClの表層での結晶構造の解明, JpGU2024 (千葉, 2024.05)
2024: 定金裕朔, 平井英人, 関根康人, 丹秀也, 落合葉子, 李亜梅, 鍵裕之, Adhesion and chemical properties of organic material analogs in the early Solar System, JpGU2024 (千葉, 2024.05)
2024: 丹秀也, 渋谷岳造, 齋藤拓也, Investigations for metals in basalt-hosted hydrothermal environments: Implications for habitability of Europa, JpGU2024 (千葉, 2024.05)　ポスター
2024: 丹秀也, 福士圭介, Baasansuren Gankhurel, 北島卓磨, Davaadorj Davaasuren, 依田優大, モンゴル南部塩湖群の冬季結氷過程における重金属の水堆積物分配, 金沢大学環日本海域環境研究センター2023年度共同研究成果報告会 (金沢, 2024.03)　口頭

2023: 丹秀也, 関根康人, 渋谷岳造, エンセラダス海洋における生命必須元素濃度の実験・数値的推測, 日本惑星科学会秋季講演会 (広島, 2023.10)　ポスター
2023: 丹秀也, 福士圭介, Baasansuren Gankhurel, 北島卓磨, Davaadorj Davaasuren, 依田優大, モンゴルアルカリ塩湖の凍結における微量元素の分配, 日本地球化学会第70回年会 (東京, 2023.09)　口頭
2023: 星野亮, 木村智樹, 大槻美沙子, 北野智大, 仲内悠祐, 土屋史紀, 木村淳, 丹秀也, 塩化ナトリウムへのプラズマ照射実験と物理化学モデリングによるエウロパの希薄大気生成と表層組成の解明, 地球電磁気・地球惑星圏学会 2023年秋季年会 (仙台, 2023.09)
2023: 大槻美沙子, 木村智樹, 北野智大, 星野亮, 仲内悠祐, 土屋史紀, 木村淳, 丹秀也, 硫酸塩へのプラズマ照射実験によるエウロパ表層物質の内部海起源説の検証, JpGU2023 (千葉, 2023.05)
2023: 関根康人, F. Postberg, 丹秀也, 渋谷岳造, 齋藤拓也, エンセラダスの海から地球生命を考える, JpGU2023 (千葉, 2023.05)
2023: 星野亮, 木村智樹, 大槻美沙子, 北野智大, 仲内悠祐, 土屋史紀, 木村淳, 丹秀也, 塩化ナトリウムへのプラズマ照射実験と物理化学モデリングによるエウロパの希薄大気生成と表層組成の解明, JpGU2023 (千葉, 2023.05)
2023: 水上勇佑, 丹秀也, 関根康人, 渋谷岳造, 齋藤拓也, 高橋嘉夫, Long-term evolution of hydrothermal fluid chemistry on Earth, JpGU2023 (千葉, 2023.05)
2023: 丹秀也, 関根康人, 渋谷岳造, 齋藤拓也, Investigations of phosphate behavior within subsurface ocean of Enceladus through hydrothermal experiments and geochemical modeling, JpGU2023 (千葉, 2023.05)　ポスター
2023: Tan, S., M. Kuzuhara, Y. Sekine, G. Tobie, E. Le Menn, J. Benoit, Investigations of ice properties on Galilean satellites through telescope observations and laboratory experiments in wavelengths of 1.0-1.5 μm, JpGU2023 (Chiba, 2023.05)　ポスター
2023: Tan, S., K. Fukushi, B. Gankhurel, T. Kitajima, D. Davaasuren, M. Yoda, Chemical partitioning of trace elements within freezing closed-basin lakes in Mongolia, JpGU2023 (千葉, 2023.05)　口頭
2023: Tan, S., Investigations for geochemistry of icy satellites through observations and laboratory experiments, The 82nd Fujihara Seminar (新潟, 2023.03) 口頭
2023: 丹秀也, Junoによるガリレオ衛星flyby観測レビュー, 第24回惑星圏シンポジウム (仙台, 2023.02) 口頭

2022: 関根康人, F. Postberg, 丹秀也, 渋谷岳造, 齋藤拓也, エンセラダス地下海のリン濃集と太陽系での前生命化学進化の多様性, 日本惑星科学会秋季講演会 (水戸, 2022.09)
2022: 丹秀也, 関根康人, 古谷健人, 渋谷岳造, Hydrothermal experiments using carbonaceous chondrites: Implications for availability of bioessential elements in Enceladus’ ocean, JpGU2022 (千葉, 2022.05)　口頭
2022: 依田優大, 関根康人, 渋谷岳造, 菊池早希子, 丹秀也, Formation of bright materials on Ceres with explosive cryovolcanic eruption of deep subsurface liquid brines, JpGU2022 (千葉, 2022.05)
2022: 丹秀也, 水惑星での酸化剤の生成, 第5回水惑星学全体会議 (バーチャル, 2022.03)　口頭
2022: 関根康人, 前澤裕之, 佐川英夫, 渋谷岳造, 菊池早希子, 丹秀也, 福士圭介, エンセラダスのサブミリ波観測で生命を探る, 第23回惑星圏研究会 (仙台, 2022.2)

2021: 丹秀也, 関根康人, 末松久幸, 菊池崇志, 羽馬哲也, 高橋嘉夫, 氷混合物への電子照射実験：エウロパ表面での選択的酸化と内部海組成への影響, 日本惑星科学会秋季講演会 (バーチャル, 2021.09)　口頭
2021: 依田優大, 関根康人, 丹秀也, 渋谷岳造, セレス氷火山における発泡破砕による非平衡塩析出: 地下海の化学進化への示唆, 日本惑星科学会秋季講演会 (バーチャル, 2021.09)
2021: 杉内光輝, 関根康人, 丹秀也, 野田夏実, 高橋嘉夫, 初期火星における強酸性表層水による表層のAlに富む粘土鉱物形成の可能性, 日本地球化学会第68回年会 (バーチャル, 2021.09)
2021: 丹秀也, 関根康人, 末松久幸, 菊池崇志, 羽馬哲也, 高橋嘉夫, エウロパ表面での酸化剤生成の物質選択性：内部海化学、生命利用エネルギーへの影響, 日本地球化学会第68回年会 (バーチャル, 2021.09)　口頭
2021: 依田優大, 関根康人, 丹秀也, 渋谷岳造, 氷火山噴出時の急減圧に伴う塩水の発泡破砕と塩析出：セレス内部海の化学進化への示唆, 日本地球化学会第68回年会 (バーチャル, 2021.09)
2021: 丹秀也, 関根康人, 菊池崇志, 末松久幸, 羽馬哲也, 高橋嘉夫, No effective oxychloride formations on Europa's surface inferred from UV/electron irradiation experiments onto salt-ice mixtures, JpGU2021 (バーチャル, 2021.05)　ポスター
2021: Tan, S., Y. Sekine, M. Kuzuhara, H. Kurokawa, C. M. Dalle Ore, D. P. Cruikshank, Characterization of Cl-bearing salts on Europa’s surface based on telescope observations and laboratory experiments, JpGU2021 (バーチャル, 2021.05)　口頭
2021: 丹秀也, 関根康人, 羽馬哲也, 氷塩混合物への電子・紫外線照射実験 -エウロパ表面の物質進化への示唆-, 第3回水惑星学全体会議 (金沢, 2021.03)　ポスター
2021: 丹秀也, 関根康人, 葛原昌幸, 黒川宏之, 菊池崇志, 末松久幸, 高橋嘉夫, エウロパ表面物質の物理化学特性, 第8回衛星系研究会（バーチャル, 2021.03）口頭（招待講演）
2021: 丹秀也, 関根康人, 葛原昌幸, 黒川宏之, 氷衛星エウロパの表層物質環境の理解に向けた室内実験・望遠鏡観測研究,　第22回惑星圏研究会（仙台, 2021.02）口頭（招待講演）

2019: 丹秀也, 関根康人, 羽馬哲也, 氷塩混合物への電子・紫外線照射実験 -エウロパ表面の物質進化への示唆-, 第3回水惑星学全体会議 (高知, 2019.11)　ポスター
2019: 丹秀也, 関根康人, 葛原昌幸, 羽馬哲也, 高橋嘉夫, エウロパ表面での塩化物酸化過程に関する実験的研究, 日本惑星科学会 2019年秋季講演会 (京都, 2019.10)口頭
2019: 野田夏実, 関根康人, 丹秀也, 渋谷岳造, 玄田英典, 初期火星ゲイルクレータ周辺の地下水循環と水-岩石反応の復元, 日本地球惑星科学連合2019年大会(千葉, 2019.5)
2019: Tan, S., Y. Sekine, T. Hama, Electron irradiations onto ice-salt mixtures at low temperatures: Implications for chemical evolution and oxidant formation on Europa, 日本地球惑星科学連合2019年大会(Chiba, 2019.5) Poster
2019: Noda, N., Y. Sekine, S. Tan, T. Shibuya, H. Genda, Groundwater hydrology and water-rock reactions around Gale Crater on early Mars, Symposium on Planetary Science (Sendai, 2019.2)

2018: 丹秀也, 関根康人, 渋谷岳造, 宮本千尋, 高橋嘉夫, 佐川英夫, エウロパ内部海における熱水硫酸還元反応: 表層物質観測への示唆, ALMA Workshop [Connecting Solar System and Protoplanetary Disks with ALMA](東京, 2018.12)ポスター
2018: 丹秀也、関根康人, 室内実験から探るエウロパ表層環境の物質進化, 第2回水惑星学全体会議(兵庫, 2018.12)ポスター
2018: 野田夏実, 関根康人, 丹秀也, 渋谷岳造, 玄田英典, 水循環シミュレーションと室内実験による初期火星Galeクレータ古湖周辺の水循環および水-岩石反応の復元, 日本惑星科学会 2018年秋季講演会 (旭川, 2018.10)
2018: 丹秀也, 関根康人, 渋谷岳造, 宮本千尋, 高橋嘉夫, The role of sulfate reduction for the sulfur cycles in Europa’s ocean, 第6回衛星系研究会(東京, 2018.8)口頭
2018: Tan, S., Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, An experimental study of sulfate reduction in hydrothermal environments within Europa, 日本地球惑星科学連合2018年大会(Chiba, 2018.5)口頭
2018: 関根康人, 丹秀也, 渋谷岳造, ミリ波・サブミリ波観測で太陽系氷天体の起源・生命存在可能性に迫る, 日本地球惑星科学連合2018年大会(千葉, 2018.5)
2018: Tan, S., Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, An experimental study of hydrothermal sulfate reduction on Europa: Implications for future observations of its surface materials, ALMA workshop for solar system planetary observations (Tokyo, 2018.3)口頭

2017: Tan, S., Y. Sekine, T. Shibuya, C. Miyamoto, Y. Takahashi, Sulfate reduction under the hydrothermal condition in Europa’s ocean, Joint meeting of Multi-scale asteroid science & Aqua planetology(Tokyo, 2017.12)ポスター
2017: 丹秀也, 関根康人, 渋谷岳造, 宮本千尋, 高橋嘉夫, エウロパ内部海の熱水環境における硫酸還元反応, 日本惑星科学会 2017年秋季講演会(大阪, 2017.9)口頭
2017: 丹秀也, 関根康人, 渋谷岳造, 宮本千尋, 高橋嘉夫, エウロパ内部海の熱水環境における硫酸還元反応, 全体キックオフミーティング (金沢, 2017.8) ポスター
2017: 丹秀也, 関根康人, 渋谷岳造, 宮本千尋, 高橋嘉夫, エウロパ内部海における硫酸還元反応と熱水環境存在可能性, 2017年度日本地球化学会第64回年会(東京, 2017.8)ポスター
2017: 丹秀也, 関根康人, 1000気圧超熱水環境でのメタン生成・硫酸還元反応実験 ―巨大氷衛星・火星での物質循環進化理解に向けて―, 第5回衛星系研究会：冥王星系の起源(東京, 2017.1)ポスター

2016: 丹秀也, 佐々木晶, タイタン表面における液体メタンの安定性, 日本地球惑星科学連合2016年大会(千葉, 2016.5) ポスター

Peer reviewer

Journal of Geophysical Research: Planets / Earth, Planets and Space / Earth and Planetary Science Letters / Icarus

Awards

ELSI Director's Achievement Award FY2021

Grant-in-Aid

October 2024 - September 2028

日本学術振興会科学研究費助成事業「国際共同研究加速基金(海外連携研究)」

研究課題名「木星系国際探査エウロパ・クリッパーでダスト分析から地下海に迫る」（代表：関根康人）

April 2023 - March 2027

日本学術振興会科学研究費助成事業「基盤研究(A)」

研究課題名「太陽系氷天体の海洋化学と有機化学進化の実験理論予測」研究分担者（代表：関根康人）

April 2023 - March 2027

日本学術振興会科学研究費助成事業「若手研究」

研究課題名「太陽系内の水環境における微量元素の動態制約」研究代表者

April 2023 - March 2024

2023年度金沢大学環日本海域環境研究センター共同研究・研究集会

研究課題名「モンゴル南部塩湖群の冬季結氷過程における重金属の水-堆積物分配」研究代表者

April 2022 - March 2023

2022年度金沢大学環日本海域環境研究センター共同研究・研究集会

研究課題名「モンゴル南部塩湖群の冬季結氷過程における重金属の水-堆積物分配」研究代表者

Teaching

Part-time Lecturer, Faculty of Science and Technology, Keio University: Overview of Earth Science (地球科学概論), 2025-present.
Part-time Instructor, Department of Earth & Planetary Science, The University of Tokyo: Earth & Planetary Science Experiments (地球惑星物理学実験), 2023-present.

Social Contributions

Japan Geoscience Union Meeting
- - Convener: JpGU2025 Session "Outer Solar System Exploration Today, and Tomorrow" HP
  - Chair: JpGU2024 Session "Outer Solar System Exploration Today, and Tomorrow"
⽇本地球化学会年会
- - Convener: 2025年度⽇本地球化学会第72回年会　セッション「G7素過程を対象とした地球化学」 HP
  - Convener: 2024年度⽇本地球化学会第71回年会　セッション「G7素過程を対象とした地球化学」 HP
  - Convener: 2023年度⽇本地球化学会第70回年会　セッション「G7素過程を対象とした地球化学」 HP
ISAS Planetary Exploration Workshop
- - SOC: ISAS Planetary Exploration Workshop 2024 Session Convener "Outerplantes" HP
  - SOC: ISAS Planetary Exploration Workshop 2023 Session Convener "Outerplantes" HP
  - SOC: ISAS Planetary Exploration Workshop 2022 Session Convener "Outerplantes" HP
  - SOC: ISAS Planetary Exploration Workshop 2021 Session Convener "Outerplantes" HP
惑星圏シンポジウム
- - SOC: 第26回惑星圏シンポジウム (SPS2025)　セッション「外惑星」 HP
  - SOC: 第24回惑星圏シンポジウム (SPS2023)　セッション「外惑星」 HP
  - SOC: 第23回惑星圏シンポジウム (SPS2022)　セッション「外惑星」 HP

Public Outreach

Interview: SAGANet interview article May 2025
Invited Lecture: 生命の起原および進化学会夏の学校2024　September 2024, Yokohama
Public Lecture: Astrobiology Seminar ONLINE　December 2023, Online
Public Lecture: スーパーサイエンスミュージアム第20期　October 2023, Hiroshima
Public Lecture: Keio Astrobiology Camp 2022　March 2022, Online

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