Aqua planetology

2020 Fiscal Year Annual Research Report

• Project Area: Aqua planetology
• Project/Area Number: 17H06454
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: 関根 康人 東京工業大学, 地球生命研究所, 教授 (60431897)
• Co-Investigator(Kenkyū-buntansha): 渋谷 岳造 国立研究開発法人海洋研究開発機構, 超先鋭研究開発部門(超先鋭研究プログラム), 主任研究員 (00512906) ; 臼井 寛裕 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 教授 (60636471) ; 福士 圭介 金沢大学, 環日本海域環境研究センター, 教授 (90444207) ; 玄田 英典 東京工業大学, 地球生命研究所, 准教授 (90456260)
• Project Period (FY): 2017-06-30 – 2022-03-31
• Keywords: 固体惑星・衛星・小惑星 / 地球惑星物質 / 宇宙・惑星化学 / 地球化学

Outline of Annual Research Achievements

総括班は、1)理論モデルを使った探査結果の解釈の推進、2)実証ツールを使った融合研究の推進、3)若手研究者の育成、4)国際探査ネットワークの構築を行う。
まず、1)、2)のため、「微惑星の水・物質循環会議」「プロキシ会議」といった個別テーマに特化した融合研究を組織し、これら会議をオンラインで開催した。「プロキシ会議」では、惑星物理学・太陽系探査学と地球化学を融合し、小惑星リュウグウの帰還試料から母天体の水環境を復元する手法を発案し、まずは既存の炭素質隕石に適応して、結果をえるなど分野融合研究を推進した。また、これに合わせて、リュウグウ帰還試料をすぐさま分析できる体制を整えることができた。
3)については、国際スクールを開催することが新型コロナの影響により困難となったが、オンラインでのミーティングを活用して個別の国際共同研究を推進した。特に、国際学術雑誌「Minerals」に本領域の特集号を組み、若手研究者や海外研究者の研究発表の掲載をサポートし、若手の発表育成の機会を多く創出するとともに、国際的なアピールを行った。
4)については、昨年度米国ツーソンでおこなった小惑星サンプルリターン国際合同会議での国際共同研究の機会を継続して維持し、個別のオンライン会合などの機会を作り出し、コロナ禍においても構築したネットワークの維持に努めた。
これらの知見・達成状況の確認、連携推進のため、領域全体会議を開催した。ホームページ運営やニューズレター発行によって、領域メンバー内外と共有することで情報伝達を進めた。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

本領域では、令和１・２年度を第２段階とし、構築した「太陽系天体の水・物質循環を記述する理論モデル」による探査データの解釈、「ビームラインや探査データ解析による実証ツール」による太陽系天体環境の復元を目標としていた。
領域全体としてこれらの目標を順調に進めており、「理論モデル」「実証ツール」を使った融合研究を進めることができた。具体的には、微惑星の水・物質循環を扱うモデルを分野融合によって構築し、はやぶさ２探査データの解釈を行う体制を構築しただけでなく、知見を火星や氷衛星に展開し、これら天体の水環境の解読、地下海の形成・進化を探査データに基づいて明らかにする融合研究を多く推進した。また、この融合研究の主役は30代以下の若手であり、次世代の育成と融合研究を同時に推進してきた。また、ビームラインについては構築後の運用を担い、様々な融合研究の中心的役割を果たすなど、領域の基盤を支える役割を果たした。
国際活動支援については、新型コロナの影響により、活動自体を縮小あるいは一部見直しを余儀なくされたが、オンラインでのミーティングで協力関係の維持を行うことができた。
このように、第２段階（令和１・２年度）は、小惑星リュウグウで得られた知見を他天体に展開するという目標に向けてすでに顕著な成果を出すなど、順調に進展しているといえる。

Strategy for Future Research Activity

第１段階で構築した理論と実証の両輪体制を用いて、第２段階で行った探査データの解釈を行ってきた。第３段階（令和３年度）では、これらを統合した水惑星の形成・進化論の構築を目指す。
具体的には、令和３年度には、微惑星・火星・氷衛星での水環境の化学進化に関する理論と実証を、拡大しつつ補完し、任意の惑星パラメタ（質量、太陽からの距離、水・岩石比など）に対して、成立する水環境とその時間進化を予想できる理論を構築する。また、これら天体に知見を基に、地球の水環境の形成・進化を広いパラメタ空間上に位置付ける。今年度は、半バーチャルでの国際シンポジウムを主催することで、本領域の知見を地球科学、惑星科学、天文学を含めた分野融合、あるいは国際的な展開を含めて多方面に波及させる。
若手育成については、令和３年度には、コロナにより延期した小惑星科学、惑星形成論をリードする海外研究者を集めた国際スクールを開催し、さらに火星・氷衛星の生命圏モデルを中心とした国際スクールも半バーチャルで開催する。また、若手・博士学生による数か月～1年の分野間インターンを推進する。
天体ごとに得られた知見を統一的視点で体系化して、水惑星の形成論、進化論を構築することで「水惑星学」を創成する。総括班は、知見をまとめた教科書を出版するとともに、次世代育成のための啓蒙活動を継続的に行っていく。

Research Products

• [Int'l Joint Research] NASA JPL/ハーバード大学/カリフォルニア工科大学(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: NASA JPL/ハーバード大学/カリフォルニア工科大学
  • # of Other Institutions: 5
• [Int'l Joint Research] ハンブルグ大学/DLR/ベルリン自由大学(ドイツ)
  • Country Name: GERMANY
  • Counterpart Institution: ハンブルグ大学/DLR/ベルリン自由大学
• [Int'l Joint Research] モンゴル国立大学(モンゴル)
  • Country Name: MONGOLIA
  • Counterpart Institution: モンゴル国立大学
• [Int'l Joint Research] ナント大学(フランス)
  • Country Name: FRANCE
  • Counterpart Institution: ナント大学
• [Int'l Joint Research] デンマーク工科大学(デンマーク)
  • Country Name: DENMARK
  • Counterpart Institution: デンマーク工科大学
• [Int'l Joint Research]
  • # of Other Countries: 5
• [Journal Article] Stable abiotic production of ammonia from nitrate in komatiite-hosted hydrothermal systems in the Hadean and Archean oceans (2021)
  • Author(s): Nishizawa, M., Saito, T., Makabe, A., Ueda, H., Saitoh, M., Shibuya, T., Takai, K.
  • Journal Title: Minerals Volume: 11 Pages: 321
  • DOI: 10.3390/min11030321
  • Peer Reviewed / Open Access
• [Journal Article] Composition of the primordial ocean just after its formation: constraints from the reactions between the primitive crust and a strongly acidic, CO2-rich fluid at elevated temperatures and pressures (2021)
  • Author(s): Ueda, H., Shibuya, T.
  • Journal Title: Minerals Volume: 11 Pages: 389
  • DOI: 10.3390/min11040389
  • Peer Reviewed / Open Access
• [Journal Article] The role of hydrothermal sulfate reduction in the sulfur cycles within Europa: Laboratory experiments on sulfate reduction at 100 MPa (2021)
  • Author(s): Tan, S., Sekine, Y., Shibuya, T., Miyamoto, C., Takahashi, Y.
  • Journal Title: Icarus Volume: 357 Pages: 114222
  • DOI: 10.1016/j.icarus.2020.114222
  • Peer Reviewed
• [Journal Article] hermally altered subsurface material of asteroid (162173) Ryugu (2021)
  • Author(s): Kitazato, K., Milliken, R. E., Iwata, T. et al.
  • Journal Title: Nature Astronomy Volume: 5 Pages: 246-250
  • DOI: 10.1038/s41550-020-01271-2
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] EXAFS Determination of Clay Minerals in Martian Meteorite Allan Hills 84001 and Its Implication for the Noachian Aqueous Environment (2021)
  • Author(s): Nakada, R., Tanabe, G., Kajitani, I., Usui, T., Shidare, M., Yokoyama, T.
  • Journal Title: Minerals Volume: 11 Pages: 176
  • DOI: 10.3390/min11020176
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Modification of the composition and density of Mercury from late accretion (2021)
  • Author(s): Hyodo, R., Genda, H., and Brasser, R.
  • Journal Title: Icarus Volume: 354 Pages: 114064
  • DOI: 10.1016/j.icarus.2020.114064
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An experimental study of photo-oxidation of Fe(II): Implications for the formation of Fe(III) (hydro)oxides on early Mars and Earth (2021)
  • Author(s): Tabata, H., Sekine, Y., Kanzaki, Y., Sugita, S.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 299 Pages: 35-51
  • DOI: 10.1016/j.gca.2021.02.006
  • Peer Reviewed
• [Journal Article] Thermodynamic constraints on smectite and iron oxide formation at Gale crater, Mars: Insights into potential free energy from aerobic Fe oxidation in lake water_groundwater mixing zone (2021)
  • Author(s): Kikuchi, S., Shibuya, T.
  • Journal Title: Minerals Volume: 11 Pages: 341-341
  • DOI: 10.3390/min11040341
  • Peer Reviewed / Open Access
• [Journal Article] Kinetics in thermal evolution of Raman spectra of chondritic organic matter to evaluate thermal history of their parent bodies (2020)
  • Author(s): Kiryu, K., Kebukawa, Y., Igisu, M., Shibuya, T., Zolensky, M.E., Kobayashi, K.
  • Journal Title: Meteoritics & Planetary Science Volume: 55 Pages: maps.13548
  • DOI: 10.1111/maps.13548
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Experimental Simulations of Hypervelocity Impact Penetration of Asteroids into the Terrestrial Ocean and Benthic Cratering (2020)
  • Author(s): Nishizawa, M., Matsui, Y., Suda, K., Saito, T., Shibuya, T., Takai, K., Hasegawa, S., Yano, H.
  • Journal Title: Journal of Geophysical Research: Planets Volume: 125 Pages: -
  • DOI: 10.1029/2019JE006291
  • Peer Reviewed / Open Access
• [Journal Article] Chemical assessment of the explosive chamber in the projector system of Hayabusa2 for asteroid sampling (2020)
  • Author(s): Takano, Y., Yamada, K., Okamoto, C., Sawada, H., Okazaki, R., Sakamoto, K., Kebukawa, Y., Kiryu, K., Shibuya, T., Igisu, M., Yano, H., Tachibana, S., Hayabusa2 project team
  • Journal Title: Earth, Planets and Space Volume: 72 Pages: 97
  • DOI: 10.1186/s40623-020-01217-y
  • Peer Reviewed / Open Access
• [Journal Article] Major/trace elements and Sr-Nd-Pb isotope systematics of lavas from lakes Barombi Mbo and Barombi Koto in the Kumba graben, Cameroon volcanic line: Constraints on petrogenesis (2020)
  • Author(s): Asaah, A. N. E., Yokoyama, T., Aka, F. T., Iwamori, H., Kuritani, T., Usui, T., Gountie Dedzo, M., Tamen, J., Hasegawa, T., Fozing, E. M., Wirmvem, M. J., Nche, A. L.
  • Journal Title: Journal of African Earth Sciences Volume: 161 Pages: 103675
  • DOI: 10.1016/j.jafrearsci.2019.103675
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Geochemically heterogeneous Martian mantle inferred from Pb isotope systematics of depleted shergottites (2020)
  • Author(s): Moriwaki, R., Usui, T., Tobita, M., Yokoyama, T.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 274 Pages: 157-171
  • DOI: 10.1016/j.gca.2020.01.014
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Space Weathering Simulation with Low-energy Laser Irradiation of Murchison CM Chondrite for Reproducing Micrometeoroid Bombardments on C-type Asteroids (2020)
  • Author(s): Matsuoka, M., Nakamura, T., Hiroi, T., Okumura, S., Sasaki, S.
  • Journal Title: he Astrophysical Journal Volume: 890 Pages: L23
  • DOI: 10.3847/2041-8213/ab72a4
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Climate Simulations of Early Mars With Estimated Precipitation, Runoff, and Erosion Rates (2020)
  • Author(s): Ramirez, R. M., Craddock, R. A., Usui, T.
  • Journal Title: Journal of Geophysical Research: Planets Volume: 125 Pages: -
  • DOI: 10.1029/2019JE006160
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Highly porous nature of a primitive asteroid revealed by thermal imaging (2020)
  • Author(s): Okada, T., Fukuhara, T., Tanaka, S. et al.
  • Journal Title: Nature Volume: 579 Pages: 518-522
  • DOI: 10.1038/s41586-020-2102-6
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime (2020)
  • Author(s): Arakawa, M., Saiki, T., Wada, K. et al.
  • Journal Title: Science Volume: 368 Pages: 67-71
  • DOI: 10.1126/science.aaz1701
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] In-situ preservation of nitrogen-bearing organics in Noachian Martian carbonates (2020)
  • Author(s): Koike, M., Nakada, R., Kajitani, I., Usui, T., Tamenori, Y., Sugahara, H., Kobayashi, A.
  • Journal Title: Nature Communications Volume: 11 Pages: 1988
  • DOI: 10.1038/s41467-020-15931-4
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The Importance of Phobos Sample Return for Understanding the Mars-Moon System (2020)
  • Author(s): Usui, T., Bajo, K., Fujiya, W., Furukawa, Y., Koike, M., Miura, Y. N., Sugahara, H., Tachibana, S., Takano, Y., Kuramoto, K.
  • Journal Title: Space Science Reviews Volume: 216 Pages: 49
  • DOI: 10.1007/s11214-020-00668-9
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Sample collection from asteroid (162173) Ryugu by Hayabusa2:Implications for surface evolution (2020)
  • Author(s): Morota, T., Sugita, S., Cho, Y. et al.,
  • Journal Title: Science Volume: 368 Pages: 654-659
  • DOI: 10.1126/science.aaz6306
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata, Mars (2020)
  • Author(s): Noguchi, R., Ishiyama, K., Kumamoto, A., Uemura, C., Kasaba, Y., Usui, T., Oura, A., Shoji, D.
  • Journal Title: Geophysical Research Letters Volume: 47 Pages: -
  • DOI: 10.1029/2020GL088556
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Characterization of the Ryugu surface by means of the variability of the near-infrared spectral slope in NIRS3 data (2020)
  • Author(s): Galiano, A., Palomba, E., D’Amore, M. et al.
  • Journal Title: Icarus Volume: 351 Pages: 113959
  • DOI: 10.1016/j.icarus.2020.113959
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Global photometric properties of (162173) Ryugu (2020)
  • Author(s): Tatsumi, E., Domingue, D., Schroder, S. et al.
  • Journal Title: Astronomy & Astrophysics Volume: 639 Pages: A83
  • DOI: 10.1051/0004-6361/201937096
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Vanadium micro-XANES determination of oxygen fugacity in olivine-hosted glass inclusion and groundmass glasses of martian primitive shergottite Yamato 980459 (2020)
  • Author(s): Nakada, R., Usui, T., Ushioda, M., Takahashi, Y.
  • Journal Title: American Mineralogist Volume: 105 Pages: 1695-1703
  • DOI: 10.2138/am-2020-7321
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Spectral characterization of the craters of Ryugu as observed by the NIRS3 instrument on-board Hayabusa2 (2020)
  • Author(s): Riu, L., Pilorget, C., Milliken, R., Kitazato, K., Nakamura, T., Cho, Y., Matsuoka, M., Sugita, S., Abe, M., Matsuura, S., Ohtake, M., Kameda, S., Sakatani, N., Tatsumi, E., Yokota, Y., Iwata, T.
  • Journal Title: Icarus Volume: 357 Pages: 114253
  • DOI: 10.1016/j.icarus.2020.114253
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A Probabilistic Approach to Determination of Ceres’ Average Surface Composition From Dawn Visible‐Infrared Mapping Spectrometer and Gamma Ray and Neutron Detector Data (2020)
  • Author(s): Kurokawa, H., Ehlmann, B. L., De Sanctis, M. C., Lapotre, M. G. A., Usui, T., Stein, N. T., Prettyman, T. H., Raponi, A., Ciarniello, M.
  • Journal Title: Journal of Geophysical Research: Planets Volume: 125 Pages: -
  • DOI: 10.1029/2020JE006606
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Impact ejecta near the impact point observed using ultra-high-speed imaging and SPH simulations, and a comparison of the two methods (2020)
  • Author(s): Okamoto, T., Kurosawa, K., Genda, H., and Matsui, T.
  • Journal Title: Journal of Geophysical Research: Planets Volume: 125 Pages: e2019JE005943
  • DOI: 10.1029/2019JE005943
  • Peer Reviewed
• [Journal Article] The formation of the Martian moons (2020)
  • Author(s): Rosenblatt P., Hyodo R., Pignatale F., Charnoz S., Trinh A., Dunseath-Terao M., Dunseath K.M., and Genda, H.
  • Journal Title: Oxford Research Encyclopedia of Planetary Science Volume: - Pages: -
  • DOI: 10.1093/acrefore/9780190647926.013.24
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Escape and accretion by cratering impacts: Formulation of scaling relations for high speed ejecta (2020)
  • Author(s): Hyodo, R., and Genda, H.
  • Journal Title: The Astrophysical Journal Volume: 898 Pages: 30 (10pp)
  • DOI: 10.3847/1538-4357/ab9897
  • Peer Reviewed / Open Access
• [Journal Article] 太陽系外縁天体の衛星形成と潮汐進化 (2020)
  • Author(s): 荒川創太、兵頭龍樹、庄司大悟、玄田英典
  • Journal Title: 遊星人 Volume: 29 Pages: 104-114
  • Peer Reviewed / Open Access
• [Journal Article] Hydrogeochemical study on closed-basin lakes in cold and semi-arid climates of the Valley of the Gobi LakesMongolia: Implications for hydrology and water chemistry of paleolakes on Mars (2020)
  • Author(s): Sekine, Y., T. Kirajima, K. Fukushi, B. Gankhurel, S. Tsetsgee, D. Davaasuren, et al.
  • Journal Title: Minerals Volume: 10 Pages: 1-24
  • DOI: 10.3390/min10090792
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] In-situ formation of monohydrocalcite in alkaline saline lakes of the Valley of Gobi Lakes: Prediction of Mg, Ca, and total dissolved carbonate concentrations in Enceladus’ ocean and alkaline-carbonate ocean worlds (2020)
  • Author(s): Fukushi, K., Imai, E., Sekine, Y., Kitajima, T., Gankhurel, B., Davaasuren, D., Hasebe, N.
  • Journal Title: Minerals Volume: 10 Pages: 1-15
  • DOI: 10.3390/min10080669
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Relict Ocean Worlds: Ceres (2020)
  • Author(s): De Sanctis, M. C., Mitri, G., Castillo-Rogez, J., House, C. H., Marchi, S., Raymond, C. A., Sekine, Y.
  • Journal Title: pace Science Reviews Volume: 216 Pages: 60
  • DOI: 10.1007/s11214-020-00683-w
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Experimental and Simulation Efforts in the Astrobiological Exploration of Exooceans (2020)
  • Author(s): Taubner, R.-S., Olsson-Francis, K., Vance, S. D. et al.
  • Journal Title: pace Science Reviews Volume: 216 Pages: 9
  • DOI: 10.1007/s11214-020-0635-5
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Comparison of Chemical Speciation of Lead, Arsenic, and Cadmium in Contaminated Soils from a Historical Mining Site: Implications for Different Mobilities of Heavy Metals (2020)
  • Author(s): Gankhurel B., Fukushi, K., Akehi, A., Takahashi, Y., Zhao, X., Kawasaki, K.
  • Journal Title: ACS Earth and Space Chemistry Volume: 4 Pages: 1064～1077
  • DOI: 10.1021/acsearthspacechem.0c00087
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Simple, Reproducible Synthesis of Pure Monohydrocalcite with Low Mg Content (2020)
  • Author(s): Kitajima, T., Fukushi, K., Yoda, M., Takeichi, Y., Takahashi, Y.
  • Journal Title: Minerals Volume: 10 Pages: 346～346
  • DOI: 10.3390/min10040346
  • Peer Reviewed / Open Access
• [Journal Article] Habitability and planetary redox (2020)
  • Author(s): Sekine, Y.
  • Journal Title: Viva Origino Volume: 48 Pages: 1-13
• [Presentation] Constraints on the origin of Phobos using major element data obtained by MMX MEGANE (2021)
  • Author(s): Hirata, K., Usui, T., Hyodo, R., Genda, H., Fukai, R., Lawrence, D. J., Chabot, N. L., and Peplowski, P. N.
  • Organizer: 52nd Lunar and Planetary Science Conference, Virtual
  • Int'l Joint Research
• [Presentation] Shock metamorphism in a quasi-open system I: Undulatory extinction in calcite (CaCO3) (2021)
  • Author(s): Kurosawa, K., Ono, H., Niihara, T., Mikouchi, T., Tomioka, N., Genda, H., Sakaiya, T., Kondo, T., Kayama, M., Koike, M., Sano, Y., Satake, W., and Matsui, T.
  • Organizer: 52nd Lunar and Planetary Science Conference, Virtual
  • Int'l Joint Research
• [Presentation] Shock metamorphism in a quasi-open system II: Melt veins in basalt at shock stage 2 (2021)
  • Author(s): Ono, H., Kurosawa, K., Niihara, T., Mikouchi, T., Genda, H., Tomioka, N., Kayama, M., Koike, M., Sano, Y., Satake, W., and Matsui, T.
  • Organizer: 52nd Lunar and Planetary Science Conference, Virtual
  • Int'l Joint Research
• [Presentation] Abiotic Synthesis of Organic Matter in Aqueous Environments Simulating Parent Bodies of Meteorites and the Effects of Minerals on the Production of Amino Acids (2021)
  • Author(s): Elmasry W., Kebukawa Y., Shibuya T., Kobayashi K.
  • Organizer: 52nd Lunar and Planetary Science Conference, Virtual
• [Presentation] 小天体と惑星の水・岩石反応と物質輸送 (2021)
  • Author(s): 黒川宏之, 渋谷岳造, 関根康人, Ehlmann Bethany L., 臼井文彦, 菊池早希子, 依田優大
  • Organizer: 第22回惑星圏研究会、オンライン
  • Invited
• [Presentation] 北西太平洋の2海山における鉄マンガンクラスト表面のテルル同位体分析 (2021)
  • Author(s): 深海雄介, 柏原輝彦, 天川裕史, 渋谷岳造, 臼井朗, 鈴木勝彦
  • Organizer: 第18回同位体科学研究会、オンライン
• [Presentation] 3 次元衝撃回収実験によるコンドライト隕石の衝撃変成度の見直しに向けて (2020)
  • Author(s): 大野遼、黒澤耕介、新原隆史、三河内岳、玄田英典、鹿山雅裕、小池みずほ、富岡尚敬、佐野有司、佐竹渉、松井 孝典
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] An overlooked heat source in impact events and its effect on the degree of devolatilization of natural calcite carbonates (2020)
  • Author(s): Kurosawa, K., Genda, H., Azuma, S., and Okazaki, K.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research / Invited
• [Presentation] Constraints on formation of the Moon and exomoons (2020)
  • Author(s): Nakajima, M., Genda, H., Asphaug, E. I., and Ida, S.
  • Organizer: AGU Fall Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Cratering erosion: revisited (2020)
  • Author(s): Hyodo, R., and Genda, H.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Extensive delivery of Martian ejecta to its moons: The gateway to a time-resolved history of Mars (2020)
  • Author(s): Genda, H., Hyodo, R., Kurosawa, K., Usui, T., and Fujita, K.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Habitable zone for a planet with a small amount of water on its surface (2020)
  • Author(s): Kodama, T., Genda, H., O'ishi, R., and Abe-Ouchi, A.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Late accretion to Mercury: Global cratering, crust erosion, and accretion of exogenic materials (2020)
  • Author(s): Hyodo, R., Genda, H., and Brasser, R.
  • Organizer: Europlanet Science Congress 2020, Virtual
  • Int'l Joint Research
• [Presentation] Martian Moons eXploration MMX: Current Status Report 2020 (2020)
  • Author(s): Kuramoto, K., ..., Genda, H., et al.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] MMX/MEGANEの元素組成データを用いたPhobosの起源の制約について (2020)
  • Author(s): 平田佳織、臼井寛裕、兵頭龍樹、玄田英典
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] Numerical Simulations of Spinup of Asteroids and the Formation of Top-Shaped Asteroids (2020)
  • Author(s): Sugiura, K., Kobayashi, H., Watanabe, S., Genda, H., Hyodo, R., and Inutsuka, S.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Organizational framework for scientific studies and instruments in Martian Moons Exploration (MMX) mission (2020)
  • Author(s): Ogawa, K., ..., Genda, H., et al.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Scientific Instruments on Martian Moons eXploration (MMX) (2020)
  • Author(s): Kameda, S., ..., Genda, H., et al.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research / Invited
• [Presentation] 火星衛星探査計画MMXの進捗2020 (2020)
  • Author(s): 倉本圭、川勝康弘、藤本正樹、Maria Antonella Barucci、David J. Lawrence、玄田英典、他
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] 小惑星の自転加速による変形とリュウグウなどのコマ型小惑星の形成条件 (2020)
  • Author(s): 杉浦圭祐、玄田英典、小林浩、渡邊誠一郎、犬塚修一郎
  • Organizer: 日本天文学会2020年秋季、オンライン
• [Presentation] 石鉄隕石メソシデライトの形成シナリオ解明に向けたベスタへの巨大衝突の数値計算 (2020)
  • Author(s): 杉浦圭祐、羽場麻希子、玄田英典
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] 日欧共同 BepiColombo 水星探査計画に向けた取り組み :後期集積が水星に与える影響 (2020)
  • Author(s): 兵頭龍樹、玄田英典、Ramon Brasser
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] 陸惑星におけるハビタブルゾーン (2020)
  • Author(s): 小玉貴則、玄田英典、阿部彩子
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] Abiotic nitrate reduction in hydrothermal environments and nitrogen cycle in early earth (2020)
  • Author(s): Nishizawa, M., Saito, T., Makabe, A., Shibuya, T., Takai, K
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] C 型小惑星の起源と炭素質コンドライト隕石との繋がり：水岩石反応と赤外スペクトルモデルからの示唆 (2020)
  • Author(s): 黒川宏之, 渋谷岳造, 関根康人, Ehlmann Bethany L., 臼井文彦, 菊池早希子, 依田優大
  • Organizer: 日本惑星科学会2020年秋季講演会、オンライン
• [Presentation] Experimental and thermodynamic approach on aqueous alteration of synthetic chondrite under reducing and low temperature conditions: Implication for aqueous alteration in meteorite parent bodies (2020)
  • Author(s): Kikuchi, S., Shibuya, T.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Experimental Study of Phosphorous Dissolution in Liquid CO2-water System (2020)
  • Author(s): Seo, K., Shibuya, T., Fujishima, K., Takai, K.,Tomita, M.
  • Organizer: Goldschmidt 2020, Virtual
  • Int'l Joint Research
• [Presentation] Experimental study of phosphorus dissolution from hydroxyapatite in liquid CO2 (2020)
  • Author(s): Seo, K., Shibuya, T., Kosuke, F., Takai, K., Tomita, M.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Formation process of a unique hydrous micrometeorite with abundant Fe-rich saponite and Fe sulfide (2020)
  • Author(s): Shimizu, S., Kikuchi, S., Nakamura, T., Matsumoto, M., Shibuya, T., Engrand, C., Duprat, J.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] H2-rich hydrothermal environment in the Enceladus’ subsurface ocean (2020)
  • Author(s): Shibuya, T., Numaho, S., Ueda, H., Kikuchi, S., Takaya, Y., Saito, T., Abe, M., Tomita, M., Takai, K.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Hydrogen generation by water-rock reactions on the early Mars (2020)
  • Author(s): Ueda, H., Shibuya, T.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Impact-generated hydrothermal systems that can promote organic synthesis: Implications for the origin of life (2020)
  • Author(s): Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Impact-Induced Hydrothermal Systems on Early Earth: CH4 Production and the Origin of Life (2020)
  • Author(s): Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N.
  • Organizer: Goldschmidt 2020, Virtual
  • Int'l Joint Research
• [Presentation] Impact-induced hydrothermal systems on early Earth: Potential places for efficient CO2 reduction and formation of complex organic molecules (2020)
  • Author(s): Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N., Genda, H. Takahashi, Y.
  • Organizer: AGU Fall Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] In situ Hydrogen Isotope Analysis of Pyroxenes in Precambrian Gabbro (2020)
  • Author(s): Yagi, H., Itoh, S., Ishikawa, A., Shibuya, T. Ueno, Y.
  • Organizer: Goldschmidt 2020, Virtual
  • Int'l Joint Research
• [Presentation] Quake-induced redox change in the interior of planets (2020)
  • Author(s): Hirose, T., Nakada, R., Okazaki, K., Shibuya, T.
  • Organizer: AGU Fall Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Radioactivity and its environmental behavior in soil samples collected from Fukushima prefecture (2020)
  • Author(s): Sato, K., Kanke, T., Haga, S., Yoshida, S., Ichijo, Y., Kumagai, H., Makabe, A., Shibuya, T.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Relationship between isotope fractionation and valence of tellurium adsorbed on the Fe-Mn oxides from seawater (2020)
  • Author(s): Fukami, Y., Kashiwabara, T., Amakawa, H., Shibuya, T., Usui, A., Suzuki, K.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
• [Presentation] Spectral evidence for the distant origin and water-rock differentiation of large C-type asteroids (2020)
  • Author(s): Kurokawa, H., Shibuya, T., Sekine, Y., Ehlmann, B. L., Usui, F., Kikuchi, S., Yoda, M.
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Invited
• [Presentation] Evolution of aqueous environment on Early Mars inferred from reconstructed water chemistry at Gale (2020)
  • Author(s): 福士 圭介、関根 康人
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] Habitable aqueous environment on Early Mars inferred from reconstructed water chemistry at Gale (2020)
  • Author(s): 福士 圭介、関根 康人、佐久間 博、森田 康暉、Robin Wordsworth
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research / Invited
• [Presentation] Water Chemistry of Early Mars Recorded in Interlayer of Smectite and Secondary Minerals from Gale (2020)
  • Author(s): Fukushi, K., Sekine, Y.
  • Organizer: 57th Annual Meeting of the Clay Minerals Society, Discovery Hall, Richland, Washington, USA
  • Int'l Joint Research / Invited
• [Presentation] 走査型透過X線顕微鏡(STXM)による隕石や地球熱水変質物に含まれる有機物や二次鉱物中の炭素や鉄の局所化学種解析 (2020)
  • Author(s): 河合敬宏、菅 大暉、武市泰男、井上皓介、福士圭介、片山郁夫、高橋嘉夫
  • Organizer: 2020年度日本地球化学会第67回オンライン年会、オンライン
• [Presentation] 地球外試料中の粘土鉱物に対する新たな鉱物学的キャラクタリゼーション法の開発 (2020)
  • Author(s): 井上 皓介、福士 圭介、森田 康暉、菅 大暉、高橋 嘉夫
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] 低温条件におけるモノハイドロカルサイトの生成 (2020)
  • Author(s): 北島卓磨、福士圭介、関根康人、依田優大、ガンフレル バーサンスレン、ダバースレン ダバードルジ、武市泰男、高橋嘉夫
  • Organizer: 2020年度日本地球化学会第67回オンライン年会、オンライン
• [Presentation] 氷形成を駆動力とした鉱物形成過程の検証：南モンゴルのアルカリ塩湖凍結時にみられる自生炭酸塩鉱物生成 (2020)
  • Author(s): 北島 卓磨、福士 圭介、ガンフレル バーサンスレン、関根 康人、依田 優大、ダバースレン ダバードルジ
  • Organizer: JpGU-AGU Joint Meeting 2020, Virtual
  • Int'l Joint Research
• [Presentation] 隕石母天体における水質変成作用の解析に用いる層状ケイ酸塩のマルチエレメントXANESライブラリの構築 (2020)
  • Author(s): 井上皓介、福士圭介、森田康暉、菅 大暉、河合敬宏、高橋嘉夫、武市泰男
  • Organizer: 2020年度日本地球化学会第67回オンライン年会、オンライン
• [Remarks] 新学術領域「水惑星学の創成」
  • URL: http://www.aquaplanetology.jp/