日本地球惑星科学連合2014年大会

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インターナショナルセッション（口頭発表）

セッション記号 P （宇宙惑星科学） » P-PS　惑星科学

[P-PS03_29AM1] Rotation, inner dynamics and natural processes on the Earth, the Moon and Mars

2014年4月29日(火) 09:00 〜 10:30 424 (4F)

コンビーナ:*Barkin Yury(Sternberg Astronomical Institute, Moscow State University, Moscow)、Hideo Hanada(RISE Project, National Astronomical Observatory)、Koji Matsumoto(RISE Project Office, National Astronomical Observatory)、Wen-Bin Shen(Dept of Geophysics, School of Geodesy and Geomatics, Wuhan University)、Mikhail Barkin(Moscow Aviation Institute)、座長:Barkin Yury(Sternberg Astronomical Institute, Moscow State University, Moscow)、花田 英夫(国立天文台RISE月惑星探査検討室)

10:15 〜 10:30

[PPS03-P04_PG] Minerals detection on Mars from Mars Reconnaissance Orbiter (MRO) CRISM data

ポスター講演3分口頭発表枠

Jin Shuanggen1、*Barkin Yury2 (1.上海天文台、2.モスクワ大学)

キーワード：Martian minerals, Mars Reconnaissance Orbiter, CRISM

Martian mineral detection and mapping can provide important information and constraints on Martian aqueous history, which can be used to assess the potential habitability of Mars. Degrees of addressing the key question for Martian aqueous alteration are dictated by the depth and extent of grasping the Martian hydrous mineral. Therefore, it is important to know detailed minerals and chemical induction of the existence of water on the Martian surface at past or present. In-situ observations of the Martian rovers, such as Spirit, Opportunity and Curiosity have provided the mineralogical analysis of Martian surface, but restricting in a limited areas. Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) aboard the Mars Reconnaissance Orbiter (MRO) with enhanced spectral resolution can provide more information at spatial and time scale. In this paper, CRISM near-infrared spectral data are used to identify mineral classes and distribution at Martian Gale region, including kaolinite, chlorites, smectite, jarosite, northupite and salts. The detection of northupite that is indicative of evaporation in Gale region suggests that the Gale region has experienced the climate change from moist condition with mineral dissolution to dryer climate with water evaporation.