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Martian aqueous environments from geological and microbiological surveys of ground ice regions and machine learning

Research Project

Project/Area Number 20H00195
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionTokyo Institute of Technology

Principal Investigator

Sekine Yasuhito  東京工業大学, 地球生命研究所, 教授 (60431897)

Co-Investigator(Kenkyū-buntansha) McGlynn Shawn・E.  東京工業大学, 地球生命研究所, 准教授 (10751084)
庄司 大悟  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, 招聘研究員 (10831109)
福士 圭介  金沢大学, 環日本海域環境研究センター, 教授 (90444207)
石上 玄也  慶應義塾大学, 理工学部(矢上), 准教授 (90581455)
GUTTENBERG NICHOLAS・RYAN  東京工業大学, 地球生命研究所, 研究員 (10747132)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2022: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2021: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2020: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000)
Keywords宇宙・惑星化学 / 固体惑星探査 / 陸域水循環・物質循環 / 大気圏・水圏化学 / 生物圏地球化学
Outline of Research at the Start

火星には現在、液体の水が存在するのか。いつどこに出現し、そこに生命はいるのか―この問いに答えることは、惑星科学に留まらず、宇宙生物学や宇宙工学にまたがる課題である。本研究では、この問いに答えるため、地下凍土層の融解により形成されている可能性がある、火星の急斜面に出現消失を繰り返す暗い筋模様(Recurring Slope Lineae, RSL)に着目し、その地球上のアナログ地形の調査を行う。詳細な地質・微生物調査と、無人観測ステーションによる長期観測、機械学習による地形パターン認識により、RSL形成メカニズムの解明、RSL付近の生態系推定、水の活動を伴う火星RSLの探索を行う。

Outline of Final Research Achievements

The existence of liquid water and habitability on Mars today have long been a mystery. In this study, we focused on water-related landforms and minerals on Mars and their terrestrial analogs, and aimed to field survey Mars-like environments and understand the water cycles, reconstruct microbial ecosystems in Mars-like environments, understand landform formation mechanisms through laboratory simulations, and discover and understand the distribution of water-related landforms through machine learning. The hydrogeochemical cycles were clarified as follows: salt water is formed by subsurface water-rock reactions, the subsurface salt water springs from different elevations to form surface water, and salt remains on the surface due to freeze-drying. The deliquescence of salts also reveals that microbial ecosystems can be formed, albeit with a small amount of biomass.

Academic Significance and Societal Importance of the Research Achievements

本研究は、人類の長年の謎である「地球外に生命はいるか」という問いに対して、現在の火星も液体の存在という意味において、それに適した環境があることを示唆するものである。同時に、現在の火星における水の循環や挙動の理解は、将来の有人火星探査や火星移住においても、現地での水資源となるため重要である。

Report

(5 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Comments on the Screening Results   Annual Research Report
  • Research Products

    (63 results)

All 2024 2023 2021 2020 Other

All Int'l Joint Research (10 results) Journal Article (18 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 17 results,  Open Access: 13 results) Presentation (34 results) (of which Int'l Joint Research: 15 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] モンゴル国立大学(モンゴル)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] ハンブルグ大学(ドイツ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] NASA JPL(米国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] University of Nantes(フランス)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] モンゴル国立大学(モンゴル)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] NASA GSFC(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ダヌンツォ大学(イタリア)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] モンゴル国立大学(モンゴル)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Centro de Astrobiologia(スペイン)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] アリゾナ州立大学(米国)

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Comparative study on cavernous weathering features formed by coastal processes and acidic alteration: Implications for rounded pits on Martian rocks2024

    • Author(s)
      Sugiuchi Mitsuteru、Sekine Yasuhito、Takahashi Satoshi
    • Journal Title

      Icarus

      Volume: 410 Pages: 115889-115889

    • DOI

      10.1016/j.icarus.2023.115889

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparing the radiolytic oxidation of sulfur and chloride within ice on Europa and Mars2024

    • Author(s)
      Tan Shuya、Sekine Yasuhito、Kikuchi Takashi、Suematsu Hisayuki、Hama Tetsuya、Takahashi Yoshio
    • Journal Title

      Icarus

      Volume: 410 Pages: 115873-115873

    • DOI

      10.1016/j.icarus.2023.115873

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Solubility of Amorphous Magnesium Carbonate at Low Temperatures: Implications for Carbonate Mineral Formation in Alkaline Lakes2023

    • Author(s)
      Kitajima Takuma、Fukushi Keisuke、Baasansuren Gankhurel、Davaadorj Davaasuren、Shuukhaaz Ganbat、Uyangaa Udaanjargal、Tuvshin Gerelmaa、Sekine Yasuhito、Takahashi Yoshio、Yoda Masahiro、Hasebe Noriko
    • Journal Title

      ACS Earth and Space Chemistry

      Volume: 7 Issue: 6 Pages: 1227-1234

    • DOI

      10.1021/acsearthspacechem.3c00030

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effective formation of surface flow due to salt precipitation within soils upon repeated brine seepages on Mars2023

    • Author(s)
      Imamura Shoko、Sekine Yasuhito、Maekawa Yu、Kurokawa Hiroyuki、Sasaki Takenori
    • Journal Title

      Icarus

      Volume: 396 Pages: 115500-115500

    • DOI

      10.1016/j.icarus.2023.115500

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dark microbiome and extremely low organics in Atacama fossil delta unveil Mars life detection limits2023

    • Author(s)
      Azua-Bustos Armando、et al.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 1-9

    • DOI

      10.1038/s41467-023-36172-1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rapid Aggregation and Dissolution of Organic Aerosols in Liquid Methane on Titan2023

    • Author(s)
      Hirai Eito、Sekine Yasuhito、Zhang Naizhong、Noda Natsumi、Tan Shuya、Takahashi Yoshio、Kagi Hiroyuki
    • Journal Title

      Geophysical Research Letters

      Volume: 50 Issue: 12 Pages: 1-9

    • DOI

      10.1029/2023gl103015

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Systematic comparison of the hydration and dehydration of Na+-, K+-, and NH4+-saturated montmorillonite, nontronite, hectorite, saponite, and Fe-saponite by in situ X-ray diffraction measurements2023

    • Author(s)
      Morida Koki、Fukushi Keisuke、Sakuma Hiroshi、Tamura Kenji
    • Journal Title

      Applied Clay Science

      Volume: 237 Pages: 106898-106898

    • DOI

      10.1016/j.clay.2023.106898

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of Ferrian and Ferro-Saponites: Implications for the structure of (Fe,Mg)-smectites synthesized in reduced conditions2021

    • Author(s)
      H. Sakuma, K. Morida, Y. Takahashi, K. Fukushi, N. Noda, Y. Sekine, K. Tamura,
    • Journal Title

      American Mineralogist

      Volume: in press Issue: 10 Pages: 1926-1935

    • DOI

      10.2138/am-2022-8231

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Field Investigations of Chemical Partitioning and Aqueous Chemistry of Freezing Closed‐Basin Lakes in Mongolia as Analogs of Subsurface Brines on Icy Bodies2021

    • Author(s)
      Yoda Masahiro、Sekine Yasuhito、Fukushi Keisuke、Kitajima Takuma、Gankhurel Baasansuren、Davaasuren Davaadorj、Gerelmaa Tuvshin、Ganbat Shuukhaaz、Shoji Daigo、Zolotov Mikhail Y.、Takahashi Yoshio
    • Journal Title

      Journal of Geophysical Research: Planets

      Volume: 126 Issue: 11 Pages: 1-22

    • DOI

      10.1029/2021je006972

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / 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 Earth2021

    • 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

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Anaerobic Microscopic Analysis of Ferrous Saponite and Its Sensitivity to Oxidation by Earth’s Air: Lessons Learned for Analysis of Returned Samples from Mars and Carbonaceous Asteroids2021

    • Author(s)
      Noda Natsumi、Yamashita Shohei、Takahashi Yoshio、Matsumoto Megumi、Enokido Yuma、Amano Kana、Kawai Takahiro、Sakuma Hiroshi、Fukushi Keisuke、Sekine Yasuhito、Nakamura Tomoki
    • Journal Title

      Minerals

      Volume: 11 Issue: 11 Pages: 1244-1244

    • DOI

      10.3390/min11111244

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stability of Atmospheric Redox States of Early Mars Inferred from Time Response of the Regulation of H and O Losses2021

    • Author(s)
      Koyama Shungo、Terada Naoki、Nakagawa Hiromu、Kuroda Takeshi、Sekine Yasuhito
    • Journal Title

      The Astrophysical Journal

      Volume: 912 Issue: 2 Pages: 135-135

    • DOI

      10.3847/1538-4357/abf0ac

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Progressive ocean oxygenation at ~2.2 Ga inferred from geochemistry and molybdenum isotopes of the Nsuta Mn deposit, Ghana2021

    • Author(s)
      Kosuke T. Goto, Yasuhito Sekine, Takashi Ito, Katsuhiko Suzuki, Ariel D. Anbar, Gwyneth W. Gordon, Yumiko Harigane, Teruyuki Maruoka, Gen Shimoda, Teruhiko Kashiwabara, Yutaro Takaya, Tatsuo Nozaki, James R. Hein, George M. Tetteh, Frank K. Nyame, Shoichi Kiyokawa
    • Journal Title

      Chemical Geology

      Volume: 567 Pages: 120116-120116

    • DOI

      10.1016/j.chemgeo.2021.120116

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata, Mars2020

    • Author(s)
      Noguchi Rina、Ishiyama Ken、Kumamoto Atsushi、Uemura Chihiro、Kasaba Yasumasa、Usui Tomohiro、Oura Aina、Shoji Daigo
    • Journal Title

      Geophysical Research Letters

      Volume: 47 Issue: 16 Pages: 1-6

    • DOI

      10.1029/2020gl088556

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Habitability and planetary redox2020

    • Author(s)
      Sekine, Y.
    • Journal Title

      Viva Origino

      Volume: 48 Pages: 1-13

    • NAID

      130008113733

    • Related Report
      2020 Annual Research Report
  • [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 Mars2020

    • Author(s)
      Sekine, Y., T. Kirajima, K. Fukushi, B. Gankhurel, S. Tsetsgee, D. Davaasuren, et al.
    • Journal Title

      Minerals

      Volume: 10 Issue: 9 Pages: 1-24

    • DOI

      10.3390/min10090792

    • Related Report
      2020 Annual Research Report
    • 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 worlds2020

    • Author(s)
      Fukushi, K., Imai, E., Sekine, Y., Kitajima, T., Gankhurel, B., Davaasuren, D., Hasebe, N.
    • Journal Title

      Minerals

      Volume: 10 Issue: 8 Pages: 1-15

    • DOI

      10.3390/min10080669

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A framework for understanding Mo isotope records of Archean and Paleoproterozoic Fe- and Mn-rich sedimentary rocks: Insights from modern marine hydrothermal Fe-Mn oxides2020

    • Author(s)
      Goto Kosuke T.、Sekine Yasuhito、Shimoda Gen、Hein James R.、Aoki Shogo、Ishikawa Akira、Suzuki Katsuhiko、Gordon Gwyneth W.、Anbar Ariel D.
    • Journal Title

      Geochimica et Cosmochimica Acta

      Volume: 280 Pages: 221-236

    • DOI

      10.1016/j.gca.2020.04.017

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Long-term evolution of hydrothermal fluid chemistry on Earth2023

    • Author(s)
      水上勇佑、丹秀也、関根康人、渋谷岳造、齋藤拓也、高橋嘉夫
    • Organizer
      日本地球惑星科学連合2023年大会、千葉県千葉市 幕張メッセ
    • Related Report
      2022 Annual Research Report
  • [Presentation] Formation conditions of methane clathrate that caps Pluto's ocean2023

    • Author(s)
      Shunsuke Nozaki, Yasuhito Sekine, Gabriel Tobie, Yunfeng Liang, Takeshi Tsuji, Hidenori Genda
    • Organizer
      Japan Geoscience Union Meeting 2023, Chiba, Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] Insights from a geomorphological comparison between terrestrial and martian eskers2023

    • Author(s)
      庄崎弘基, 関根康人
    • Organizer
      日本地球惑星科学連合2023年大会、千葉県千葉市 幕張メッセ
    • Related Report
      2022 Annual Research Report
  • [Presentation] Toward measurements of elastic wave velocities of laboratory analogs of Titan's organic materials2023

    • Author(s)
      Eito Hirai, Yasuhito Sekine, Osamu Nishizawa, Takeshi Tsuji, Tomohiro Ohuchi, and Yuji Higo
    • Organizer
      日本地球惑星科学連合2023年大会、千葉県千葉市 幕張メッセ
    • Related Report
      2022 Annual Research Report
  • [Presentation] Nitrogen clathrate substitution as formation mechanism of small lakes on Titan2023

    • Author(s)
      Shunsuke Nozaki, Yasuhito Sekine , Yunfeng Liang, Wuge Cui, Hidenori Genda, Takeshi Tsuji, and Yoshihiro Masuda
    • Organizer
      Titan Through Time VI, Paris, France
    • Related Report
      2022 Annual Research Report
  • [Presentation] Rapid aggregation and dissolution of organic aerosols in liquid methane on Titan2023

    • Author(s)
      Eito Hirai, Yasuhito Sekine, Naizhong Zhang, Natsumi Noda, Shuya Tan, Yoshio Takahashi, and Hiroyuki Kagi
    • Organizer
      Titan Through Time VI, Paris, France
    • Related Report
      2022 Annual Research Report
  • [Presentation] Diversity of hydrothermal systems in various dissolved carbonate and sulfate in seawater: Implications for Earth's evolution2023

    • Author(s)
      Yusuke Mizukami, Shuya Tan, Yasuhito Sekine, Takazo Shibuya, Takuya Saito, Yoshio Takahashi
    • Organizer
      Water-Rock Interaction(WRI-17), Sendai, Miyagi, Japan
    • Related Report
      2022 Annual Research Report
  • [Presentation] 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2021

    • Author(s)
      丹秀也、 関根康人、 葛原昌幸、 黒川宏之
    • Organizer
      第22回惑星圏研究会、オンライン
    • Related Report
      2021 Annual Research Report
  • [Presentation] Identifying the sources of methane hydrate from the doubly substituted isotopologues of methane: 13CH3D and 12CH2D22021

    • Author(s)
      Zhang N., Snyder, G.T., Lin, M., Nakagawa, M., Gilbert, A., Yoshida, N., Matsumoto, R., Sekine, Y.
    • Organizer
      第4回水惑星学全体会議、金沢大学 、金沢市、石川県
    • Related Report
      2021 Annual Research Report
  • [Presentation] タイタン北極域における蒸発岩の形成に関する実験的研究2021

    • Author(s)
      平井英人、 関根康人、 Zhang Naizhong
    • Organizer
      第4回水惑星学会議、金沢大学 、金沢市、石川県
    • Related Report
      2021 Annual Research Report
  • [Presentation] エウロパ表面物質の物理化学特性2021

    • Author(s)
      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
    • Organizer
      第4回水惑星学会議、金沢大学 、金沢市、石川県
    • Related Report
      2021 Annual Research Report
  • [Presentation] Experimental and numerical study on evaporite formation around the north pole of Titan2021

    • Author(s)
      平井英人、 関根康人、 Zhang Naizhong
    • Organizer
      第8回衛星系研究会、オンライン
    • Related Report
      2021 Annual Research Report
  • [Presentation] モンゴル南部塩湖群の結氷時における鉱物生成と水-氷-堆積物間元素分配2021

    • Author(s)
      依田優大
    • Organizer
      金沢大学環日本海域環境研究センター2020年度共同利用成果報告会、オンライン
    • Related Report
      2020 Annual Research Report
  • [Presentation] Laboratory investigations of eruption and salt mineralization of subsurface seawater on Ceres and other geologically active icy bodies2021

    • Author(s)
      依田優大、 関根康人
    • Organizer
      第4回水惑星学全体会議、金沢大学、金沢市、石川県
    • Related Report
      2020 Annual Research Report
  • [Presentation] 初期地球の衝突熱水系における二酸化炭素の還元と有機化合物の生成2021

    • Author(s)
      金子和夢
    • Organizer
      第4回水惑星学全体会議、金沢大学、金沢市、石川県
    • Related Report
      2020 Annual Research Report
  • [Presentation] 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2021

    • Author(s)
      杉内光輝
    • Organizer
      第4回水惑星学全体会議、金沢大学、金沢市、石川県
    • Related Report
      2020 Annual Research Report
  • [Presentation] モンゴル凍結塩湖における水-氷間の塩の分配と氷天体地下海への応用2021

    • Author(s)
      依田優大、 関根康人、 福士圭介、 北島卓磨、 Gankhurel Baasansuren、 Davaasuren Davaadorj、 庄司大悟、 高橋嘉夫
    • Organizer
      第8回衛星系研究会、オンライン
    • Related Report
      2020 Annual Research Report
  • [Presentation] 機械学習によるカオス地形の識別と分類:火星・氷天体への応用2021

    • Author(s)
      庄崎弘基、 関根康人、 N. Guttenberg
    • Organizer
      第8回衛星系研究会、オンライン
    • Related Report
      2020 Annual Research Report
  • [Presentation] 埋没によるイオのパテラの一様分布への自己組織化2020

    • Author(s)
      庄司大悟
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Laboratory investigations of eruption and salt precipitation of subsurface seawater on Europa and other geologically active icy bodies2020

    • Author(s)
      Yoda M., Sekine, Y.
    • Organizer
      AGU Fall Meeting 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Classification of Martian chaos terrains using imagery machine learning: Implications for ground ice distributions and dynamics2020

    • Author(s)
      Shozaki, H., Sekine, Y., Guttenberg, N.
    • Organizer
      AGU Fall Meeting 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact-induced hydrothermal systems on early Earth: Potential places for efficient CO2 reduction and formation of complex organic molecules2020

    • Author(s)
      Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N., Genda, H., Takahashi, Y.
    • Organizer
      AGU Fall Meeting 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effective Formation of Al-Rich Surface Clays Through Highly Acidic Water Activity on Early Mars2020

    • Author(s)
      Sugiuchi, M., Sekine, Y., Tan, S., Noda, N., Takahashi, Y., Ramirez, R.
    • Organizer
      AGU Fall Meeting 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact-induced hydrothermal systems on early Earth: CH4 production and the origin of life2020

    • Author(s)
      Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N.
    • Organizer
      Goldschmidt 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effective Formation of Al-Rich Surface Clays Through Highly Acidic Water Activity on Early Mars2020

    • Author(s)
      Sugiuchi, M., Sekine, Y., Tan, S., Noda, N., Takahashi, Y., Ramirez, R.
    • Organizer
      Goldschmidt 2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Field investigation on capturing of lake water salts within surface ice on ice-covered saline lakes in Mongolia: Implications for icy shell compositions of Solar System icy bodies2020

    • Author(s)
      Yoda M., Sekine, Y., Fukushi, K., Kitajima, T., Gankhurel, B., Davaasuren, D., Shoji, D., Takahashi, Y.
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Recognition and classification of Martian chaos terrains using imagery machine learning2020

    • Author(s)
      Shozaki, H., Sekine, Y., Guttenberg, N.
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Impact-generated hydrothermal systems that can promote organic synthesis: Implications for the origin of life2020

    • Author(s)
      Kaneko, K., Sekine, Y., Shibuya, T., Ueda, H., Noda, N.
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effective formation of Al-rich surface clays through acidic water activity on early Mars2020

    • Author(s)
      杉内光輝、 関根康人、 丹秀也、 野田夏実、 高橋嘉夫、 Ramses M. Ramirez
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • 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、Baasansuren Gankhurel、Davaadorj Davaasuren、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
    • Related Report
      2020 Annual Research Report
  • [Presentation] Water Chemistry of Early Mars Recorded in Interlayer of Smectite and Secondary Minerals from Gale2020

    • Author(s)
      Fukushi, K., Sekine, Y.
    • Organizer
      57th Annual Meeting of the Clay Minerals Society, Discovery Hall, Richland, Washington, US
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Evolution of aqueous environment on Early Mars inferred from reconstructed water chemistry at Gale2020

    • Author(s)
      福士 圭介、関根 康人
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [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 Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Habitable aqueous environment on Early Mars inferred from reconstructed water chemistry at Gale2020

    • Author(s)
      福士 圭介、関根 康人、佐久間 博、森田 康暉、Robin Wordsworth
    • Organizer
      JpGU-AGU Joint Meeting2020, Virtual
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] Yasuhito SEKNE's page

    • URL

      http://www.aquaplanetology.jp/sekine/index.html

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

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Published: 2020-04-28   Modified: 2025-01-30  

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