Laboratory experiments of hydrothermal reactions in Enceladus : Toward understanding chemistry in the interior ocean

• Project/Area Number: 22740352
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Geochemistry/Astrochemistry
• Research Institution: The University of Tokyo
• Principal Investigator: SEKINE Yasuhito 東京大学, 大学院・新領域創成科学研究科, 講師 (60431897)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 惑星科学 / 地球化学 / 惑星探査 / 惑星起源・進化

Research Abstract

We have investigated chemical reactions between primordial volatiles(such as ammonia and carbon dioxide) and primitive minerals(such as olivine) in Enceladus' interior ocean by conducting laboratory experiments of hydrothermal reactions. By comparing the results with the observations of Enceladus' plume by the Cassini spacecraft, we have discussed the temperature conditions of possible hydrothermal systems and habitability in Enceladus' ocean.

Research Products

• [Journal Article] Giant impacts in the Saturnian system : a possible origin of diversity in the inner mid-sized satellites (2012)
  • Author(s): Sekine, Y., H. Genda
  • Journal Title: Planetary and Space Science Volume: 63-64 Pages: 133-138
  • Peer Reviewed
• [Journal Article] LCROSS (Lunar Crater Observation and Sensing Satellite) observation campaign : Strategies, implementation, and lessons learned (2012)
  • Author(s): Heldmann, J., 他多数
  • Journal Title: Space Science Reviews Volume: (印刷中)(掲載確定)
  • Peer Reviewed
• [Journal Article] 鉱物・化学組成から読み取れる火星の環境変動史 (2012)
  • Author(s): 関根康人
  • Journal Title: 地質学雑誌 Volume: (印刷中)(掲載確定)
  • Peer Reviewed
• [Journal Article] Oxidizing proto-atmosphere on Titan : constraint from N_2 formation by impact shock (2011)
  • Author(s): Ishimaru, R., Y. Sekine, T. Matsui, O. Mousis
  • Journal Title: Astrophysical Journal Letters Volume: 741 : L10 Pages: 1-6
  • Peer Reviewed
• [Journal Article] Osmium evidence for synchronicity between a rise in atmospheric oxygen and Palaeoproterozoic deglaciation (2011)
  • Author(s): Sekine, Y., Suzuki, K., Senda, R., Tajika, E., Tada, R., Goto, K., Yamamoto, S., Ohkouchi, N., and Ogawa, N.O
  • Journal Title: Nature Communications 2 Volume: 502 Issue: 1 Pages: 502-502
  • DOI: 10.1038/ncomms1507
  • Peer Reviewed / Open Access
• [Journal Article] Manganese enrichment in the Gowganda Formation of the Huronian Supergroup : a highly oxidizing shallow-marine environment after the last Huronian glaciation (2011)
  • Author(s): Sekine, Y., E. Tajika, R. Tada, T. Hirai, K. T. Goto, T. Kuwatani, K. Goto, S. Yamamoto, S. Tachibana, Y. Isozaki, J. L. Kirschv ink
  • Journal Title: Earth and Planetary Science Letters Volume: 307 Pages: 201-210
  • Peer Reviewed
• [Journal Article] Replacement and late formationof atmospheric N2 on undifferentiated Titan by impacts (2011)
  • Author(s): Sekine, Y., H. Genda, S. Sugita, T. Kadono, T. Matsui
  • Journal Title: Nature Geoscience Volume: 4 Pages: 359-362
• [Journal Article] Replacement and late formation of atmospheric N2 on undifferentiated Titan by impacts (2011)
  • Author(s): Sekine, Y., H.Genda, S.Sugita, T.Kadono, T.Matsui
  • Journal Title: Nature Geoscience Volume: 4 Pages: 359-362
  • Peer Reviewed
• [Journal Article] A ground-based observation of the LCROSS impact events using the Subaru Telescope (2011)
  • Author(s): Hong, P.K., S.Sugita, N.Okamura, Y.Sekine, H.Terada, 他
  • Journal Title: Icarus Volume: 214 Pages: 21-29
  • Peer Reviewed
• [Journal Article] Oxidizing proto-atmosphere on Titan : constraint from N2 formation by impact shock (2011)
  • Author(s): Ishimaru, R, Y.Sekine, T.Matsui, O.Mousis
  • Journal Title: The Astrophysical Journal Letters Volume: 741 Issue: 1 Pages: 1-6
  • DOI: 10.1088/2041-8205/741/1/l10
  • Peer Reviewed
• [Journal Article] 化学実験から惑星の起源・多様性の理解を目指して (2010)
  • Author(s): 関根康人
  • Journal Title: 日本惑星科学会誌,遊星人 Volume: 19, 4 Pages: 303-313
  • NAID: 110008007259
• [Journal Article] Impact-induced N2 production from ammonium sulfate : Implications for the origin and evolution of N2 in Titan's atmosphere (2010)
  • Author(s): Fukuzaki, S. Y. Sekine, H. Genda, S. Sugita, T. Kadono, T. Matsui
  • Journal Title: Icarus Volume: 209, 2 Pages: 715-722
• [Journal Article] Anomalous negative excursion of carbon isotope in organic carbon after the last Paleoproterozoic glaciation in North America (2010)
  • Author(s): Sekine, Y., E. Tajika, N. Ohkouchi, N. O. Ogawa, K. Goto, R. Tada, S. Yamamoto, J. L. Kirschvink
  • Journal Title: Geochemistry, Geophysics, Geosystems Volume: 11 Issue: 8
  • DOI: 10.1029/2010gc003210
• [Journal Article] Impact-induced N2 production from ammonium sulfate : Implications for the origin and evolution of N2 in Titan's atmosphere (2010)
  • Author(s): Fukuzaki, S., Y.Sekine, H.Genda, S.Sugita, T.Kadono, T.Matsui
  • Journal Title: Icarus Volume: 209 Pages: 715-722
  • Peer Reviewed
• [Journal Article] Anomalous negative excursion of carbon isotope in organic carbon after the last Paleoproterozoic glaciation in North America (2010)
  • Author(s): Sekine, Y., E.Tajika, N.Ohkouchi, N.O.Ogawa, K.Goto, R.Tada, S.Yamamoto, J.L.Kirschvink
  • Journal Title: Geochemistry, Geophysics, Geosystems Volume: 11
  • Peer Reviewed
• [Journal Article] 化学実験から惑星の起源・多様性の理解を目指して (2010)
  • Author(s): 関根康人
  • Journal Title: 日本惑星科学会誌、遊星人 Volume: 19 Pages: 303-313
  • NAID: 110008007259
  • Peer Reviewed
• [Journal Article] In-situ spectroscopic observation of silicate vaporization due to >10 km/s impacts using laser driven projectiles (2010)
  • Author(s): Kurosawa, K., S.Sugita, T.Kadono, K.Shigemori, Y.Hironaka, K.Otani, T.Sano, A.Shiroshita, et al.
  • Journal Title: Geophysical Research Letters Volume: 37
  • Peer Reviewed
• [Journal Article] LCROSS衝突の放出物のすばる望遠鏡による地上観測 (2010)
  • Author(s): 洪鵬、岡村奈津子、杉田精司、関根康人、寺田宏、高遠徳尚、早野裕、布施哲治、河北秀世、黒澤耕介、春山純一, 他
  • Journal Title: 日本惑星科学会誌、遊星人 Volume: 19 Pages: 96-104
  • NAID: 110007658251
  • Peer Reviewed
• [Journal Article] Impact experiments with a new technique for acceleration of projectiles to velocities higher than Earth's escape velocity 11.2 km/s (2010)
  • Author(s): Kadono, T., T.Sakaiya, Y.Hironaka, K.Otani, T.Sano, T.Fujiwara, T.Mochiyama, K.Kurosawa, et al.
  • Journal Title: Journal of Geophysical Research-Planets Volume: 115
  • Peer Reviewed
• [Journal Article] Hydrocarbon lakes and watery matrices/habitats for life on Titan (2010)
  • Author(s): Naganuma, T., Y.Sekine
  • Journal Title: Journal of Cosmology Volume: 5 Pages: 905-911
  • Peer Reviewed
• [Presentation] Co-evolution of the atmosphere, ocean, and life over Earth's history (2011)
  • Author(s): Sekine, Y.
  • Organizer: Germany-Japan Round Table
  • Place of Presentation: ハイデルベルグ(ドイツ)
  • Year and Date: 2011-12-02
• [Presentation] Hydrothermal systems in Enceladus : Constraints from experiments and observations (2011)
  • Author(s): Sekine, Y., T. Shibuya, T. Kuwatani, K. Suzuki
  • Organizer: Planetary Geology Field Symposium
  • Place of Presentation: Kitakyusyu, Japan
  • Year and Date: 2011-11-06
• [Presentation] Hydrothermal systems in Enceladus : Constraints from experiments and observations (2011)
  • Author(s): Sekine, Y., T.Shibuya, T.Kuwatani, K.Suzuki
  • Organizer: PERC Planetary Geology Field Symposium
  • Place of Presentation: 北九州、北九州国際会議場
  • Year and Date: 2011-11-05
• [Presentation] 氷衛星エンセラダスの熱水環境に対する実験的制約 (2011)
  • Author(s): 関根康人、澁谷岳造、桑谷立、鈴木勝彦
  • Organizer: 2011年日本惑星科学会秋季講演会
  • Place of Presentation: 相模原、相模女子大学
  • Year and Date: 2011-10-22
• [Presentation] Experimental constraints on exogenic and endogenic N2 formation on Titan, Triton, and Enceladus (2011)
  • Author(s): Sekine, Y.(invited)
  • Organizer: Nitrogen in planetary systems : the early evolution of the atmospheres of terreestrial planets
  • Place of Presentation: Barcelona, Spain
  • Year and Date: 2011-09-23
• [Presentation] Experimental constraints on exogenic and endogenic N2 formation on Titan, Triton, and Enceladus (2011)
  • Author(s): Sekine, Y.
  • Organizer: Nitrogen in planetary systems : the early evolution of the atmospheres of terrestrial planets
  • Place of Presentation: バルセロナ(スペイン)(招待講演)
  • Year and Date: 2011-09-21
• [Presentation] 火星・タイタンの表層環境大変動イベントと地球環境進化への示唆 (2011)
  • Author(s): 関根康人
  • Organizer: 日本地質学会第118年学術大会
  • Place of Presentation: 水戸、茨城大学(招待講演)
  • Year and Date: 2011-09-11
• [Presentation] The role of hypervelocity impacts in the formation and evolution of the Saturnian satellites (2011)
  • Author(s): Sekine, Y.
  • Organizer: BepiColombo-Messenger Workshop
  • Place of Presentation: 京都、京都大学
  • Year and Date: 2011-09-05
• [Presentation] Experimental constraints on hydrothermal systems on Enceladus (2011)
  • Author(s): Sekine, Y., T.Shibuya, K.Suzuki
  • Organizer: Asia Oceania Geosciences Society 2011
  • Place of Presentation: 台北(台湾)(招待講演)
  • Year and Date: 2011-08-12
• [Presentation] Experimental constraints on hydrothermal systems on Enceladus (2011)
  • Author(s): Sekine, Y., T. Shibuya, K. Suzuki(invited)
  • Organizer: Asia Oceania Geosciences Society 2011
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 2011-08-11
• [Presentation] Atmospheric replacement and late formation of N2 on undifferentiated Titan during the Late Heacy Bombardment (2010)
  • Author(s): Sekine, Y., H. Genda, S. Sugita, T. Kadono, T. Matsui
  • Organizer: American Geophysical Union fall meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-14
• [Presentation] Atmospheric replacement and late formation of N2 on undifferentiated Titan during the Late Heavy Bombardment (2010)
  • Author(s): Sekine, Y., H.Genda, S.Sugita, T.Kadono, T.Matsui
  • Organizer: American Geophysical Union fall meeting
  • Place of Presentation: San Francisco, USA
  • Year and Date: 2010-12-13
• [Presentation] Laboratory experiments on hypervelocity impacts on planetary ices (2010)
  • Author(s): Sekine, Y.
  • Organizer: International workshop on advances in planetary atmospheres and exploration
  • Place of Presentation: Ahmedabad, India
  • Year and Date: 2010-07-12
• [Presentation] Laboratory experiments on hypervelocity impacts on planetary ices (2010)
  • Author(s): Sekine, Y.(invited)
  • Organizer: International Workshop on Advances in Planetary Atmospheres and Exploration
  • Place of Presentation: Ahmedabad, India, July 2010
  • Year and Date: 2010-07-11
• [Presentation] Giant impacts in Saturnian system : origin of diversity in the mid-sized satellites (2010)
  • Author(s): Sekine, Y., H.Genda
  • Organizer: Asia Oceania Geosciences Society 2010
  • Place of Presentation: Hyderabad, India
  • Year and Date: 2010-07-06
• [Presentation] タイタン、トリトンにおける窒素の起源と後期隕石重爆撃期の役割 (2010)
  • Author(s): 関根康人、玄田英典、杉田精司、門野敏彦、松井孝典
  • Organizer: 日本地球惑星科学連合2010年大会
  • Place of Presentation: 幕張,日本 幕張メッセ
  • Year and Date: 2010-05-25