Oral Session

A-4: Aqueous processes on asteroids, Mars, and icy satellites

Sat. Aug 19, 2023 2:45 PM - 5:15 PM ROOM3 (Meeting Room 1)

Chairman:Yasuhito Sekine(Tokyo Institute of Technology)、Mohit Melwani Daswani(NASA JPL)、Hikaru Yabuta(Hiroshima University)

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2:45 PM - 3:15 PM

[OA4-01] Formation and alteration of Cb-type asteroid Ryugu

*Tomoki Nakamura¹, Megumi Matsumoto¹ (1. Tohoku University (Japan))

3:15 PM - 3:30 PM

[OA4-02] Reconstruction of water environment of Ryugu's parent body using X-ray spectroscopy

*Takahiro Kawai¹, Keisuke Fukushi², Yoshio Takahashi¹ (1. Department of Earth and Planetary Science, the University of Tokyo (Japan), 2. Institute of Nature and Environmental Technology, Kanazawa University (Japan))

3:30 PM - 3:45 PM

[OA4-03] The Metamorphic Brine – Ocean – Surface Deposit Connection at Ceres

*Mohit Melwani Daswani¹, Julie Castillo-Rogez¹, Jack Diab² (1. Jet Propulsion Laboratory, California Institute of Technology (United States of America), 2. Chemistry and Biochemistry Department, University of California Los Angeles (United States of America))

3:45 PM - 4:00 PM

[OA4-04] Investigations for availability of trace elements in ocean of Enceladus through hydrothermal experiments and geochemical modeling

*Shuya Tan¹, Yasushito Sekine², Takazo Shibuya¹ (1. Japan Agency for Marine-Earth Science and Technology (JAMSTEC) (Japan), 2. Earth-Life Science Institute (ELSI), Tokyo Institute of Technology (Japan))

Coffee break (4:00 PM - 4:15 PM)

4:15 PM - 4:30 PM

[OA4-05] Understanding the impacts of Enceladus's hydrothermal-freeze cycles on chemical evolution

*Maxwell Lowell Craddock¹, Yasuhito Sekine¹, Shuya Tan^1,2, Yamei Li¹, Keisuke Aratsu¹, Ruiqin Yi¹ (1. Earth-Life Science Institute, Tokyo Institute of Technology (Japan), 2. JAMSTEC (Japan))

4:30 PM - 4:45 PM

[OA4-06] Rapid aggregation of organic aerosols by liquid methane as a formation mechanism of dune particles on Titan

*Eito Hirai^1,2, Yasuhito Sekine^1,3,4, Naizhong Zhang², Natsumi Noda¹, Shuya Tan⁵, Yoshio Takahashi⁶, Hiroyuki Kagi⁷ (1. Earth–Life Science Institute (ELSI), Tokyo Institute of Technology (Japan), 2. Department of Earth and Planetary Science, Tokyo Institute of Technology (Japan), 3. Institute of Nature and Environmental Technology, Kanazawa University (Japan), 4. Department of Geophysics, Tohoku University (Japan), 5. Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC) (Japan), 6. Department of Earth and Planetary Science, The University of Tokyo (Japan), 7. Geochemical Research Center, Graduate School of Science (Japan))

4:45 PM - 5:00 PM

[OA4-07] Hematite-Goethite Problem on Mars: Transformation of Ferrihydrite to Crystalline Fe Oxides in Salt Solutions

*So Fukaya¹, Keisuke Fukushi², Yoshio Takahashi³ (1. Kanazawa Univ. (Japan), 2. Institute of Natural and Environmental Technology, Kanazawa Univ. (Japan), 3. Department of Earth and Planetary Science, The University of Tokyo (Japan))

5:00 PM - 5:15 PM

[OA4-08] Diversity of hydrothermal systems in various dissolved carbonate and sulfate in seawater: Implications for Earth’s evolution

*Yusuke Mizukami^1,2, Shuya Tan³, Yasuhito Sekine², Takazo Shibuya³, Takuya Saito³, Yoshio Takahashi⁴ (1. Tokyo Institute of Technology Department of Earth and Planetary Sciences (Japan), 2. Earth-Life Science Institute (Japan), 3. Japan Agency for Marine-Earth Science and Technology (Japan), 4. University of Tokyo (Japan))

Session information