[M-IS07] Aqua planetology

convener:Yasuhito Sekine(Earth-Life Science Insitute, Tokyo Institute of Technology), Hidenori Genda(Earth-Life Science Institute, Tokyo Institute of Technology), Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University), Tomohiro Usui(Japan Aerospace Exploration Agency)

This proposed session covers a wide range of topics related to chemical reactions and dynamics involving water on planetary bodies; for instance, water-rock-organics interactions within planetesimals, distribution of water in the early Solar system, hydrological and biogeochemical processes on Earth and terrestrial planets, geochemical cycles, redox-pH gradients, and habitability on early Mars and icy moons, and theory to understand how to build habitable aquaplanets.

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[MIS07-07] Potential Positive Feedback Mechanisms in an Anoxic Environmental System of a Planet with CO₂-CH₄ Atmosphere

*Yasuto Watanabe¹, Eiichi Tajika¹, Kazumi Ozaki², Peng Hong³ (1.The University of Tokyo, 2.Toho University, 3.Chiba Institute of Technology)

[MIS07-08] Sulfur species in carbonates of a 4.1-billion-year old Martian meteorite constraining conditions of water on ancient Mars

*Kajitani Iori^1,2, Ryoichi Nakada³, Mizuho Koike¹, Gaku Tanabe⁴, Tomohiro Usui^1,5, Tetsuya Yokoyama⁴, Keisuke Fukushi⁶ (1.Institute of Space and Astronautical Science, 2.The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 4.Tokyo Institute of Technology, 5.Earth-Life Science Institute, Tokyo Institute of Technology, 6.Kanazawa University)

[MIS07-09] Experimental and thermodynamic approach on aqueous alteration of synthetic chondrite under reducing and low temperature conditions: Implication for aqueous alteration in meteorite parent bodies

*Sakiko Kikuchi¹, Takazo Shibuya¹ (1.Japan Agency for Marine-Earth Science and Technology)

[MIS07-10] Geo-electrochemical Decomposition of Amino Acids on Icy Planetesimals Reproduces Organics in Carbonaceous Meteorites

*LI Yamei¹, Norio Kitadai^1,2, ryuhei nakamura¹, Yasuhito Sekine¹ (1.Earth-Life Science Institute, Tokyo Institute of Technology, 2.Japan Agency for Marine-Earth Science and Technology)

[MIS07-11] Reduction of U(VI) to U(IV) by Fe(II)-bearing smectite

*Yoshio Takahashi¹, Jing Sun¹, Takafumi Hamamoto², Takayuki sasaki³ (1.The University of Tokyo, 2.NUMO, 3.Kyoto University)

[MIS07-12] Fluorescence spectroscopy is a tool for tracing dissolved organic carbon in hot spring ecosystems

*Hilairy Ellen Hartnett¹, Joshua Nye¹ (1.Arizona State University)