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月面の裏側の高地の構造と形成
Ian Garrick-Bethell1, Francis Nimmo, Mark A Wieczorek
1Department of Geological Sciences, Brown University, Providence, RI 02912, USA. igarrick@ucsc.edu
まとめ
月面の裏側の高地である.
科学分野:
- 月科学 月科学 月科学
- 惑星地質学 惑星地質学
- 地質物理学 地質物理学とは地質物理学です.
背景:
- 月面の裏側の高原の起源は,月科学における重要な未解決問題である.
- この地域を理解することは,月の全体的な地質学的進化を理解するための鍵です.
研究 の 目的:
- 月の裏側の高地の形成と構造を調査する.
- 遠方の地形,地殻の厚さ,および内部プロセスとの関係を調査する.
主な方法:
- 月の地形と地殻の厚さのデータを分析した.
- 構造的特徴を定量化するために,調和分析の適用.
- 観測された特徴を理論的モデルと比較する.
主要な成果:
- 遠方の高地の地形と地殻の厚さの多くを,2度ハーモニー構造で記述できます.
- この2度構造は,月面の裏側に特有で,他の月面地域と区別する.
- この発見は,月面の地殻の構造,近隣の火山活動,熱を生成する元素との関連を示唆している.
結論:
- 背面の地形は,単なる凍結した潮の膨らみによって説明されません.
- マグマの海洋段階における潮加熱の空間的変動は,遠方の地殻の厚さや地形を引き起こしたのかもしれない.
- この過程は,木星の衛星であるヨーロッパの氷の殻に類似しています.
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