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東部のテラ・メリディアン,火星のスペクトル反射率と形態学的相関
R E Arvidson1, F Poulet, J-P Bibring
1Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. arvidson@wunder.wustl.edu
Science (New York, N.Y.)
|February 19, 2005
まとめ
マース・エクスプレス (MARS EXPRESS) は,マーズ・エクスプレス (MARS EXPRESS) と呼ばれています.
科学分野:
- 惑星科学は惑星科学である.
- アストロジオロジー アストロジオロジー
- ミネラロジーは,鉱物学です.
背景:
- 火星の東方テラ・メリディアニ (Eastern Terra Meridiani) は,多様な地質的な地形を示しています.
- オポチュニティ・ローバーの以前の探査では,白血岩を産む平原が特定されました.
研究 の 目的:
- マース・エクスプレスのデータを用いて,東部のテラ・メリディアニの鉱物学と水性物質の分布を調査する.
- 古代の水性環境の地質学的文脈と規模を理解する.
主な方法:
- 鉱物学,水,氷,および活動 (OMEGA) 観測所からのハイパースペクトル画像データの分析.
- OMEGAのデータと,オポチュニティ・ローバーの地質・鉱物学的発見を比較した.
主要な成果:
- 刻印された地形材料で検出された普遍的な分子水.
- 特定の北部の地域におけるキエセライト (MgSO4.H2O) で特定された結晶水.
- 鉱物学的類似性は,地域規模の古代の水性環境を示唆しています.
結論:
- 彫刻された地形堆積物と層状の岩は鉱物学的類似性を共有しており,古代の広範囲にわたる水活動を示しています.
- テラ・メリディアニ (Terra Meridiani) の古代の水環境は,ローバーの発見と一致する地域規模に広がっています.
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