月面の磁場と太陽風との相互作用:月面探査機の結果
1R. P. Lin, Space Sciences Laboratory and Physics Department, University of California, Berkeley, CA 94720, USA. D. L. Mitchell, D. W. Curtis, K. A. Anderson, C. W. Carlson, J. McFadden, Space Sciences Laboratory, University of California,
Science (New York, N.Y.)
|September 4, 1998
まとめ
Lunar Prospectorのデータは,強烈な地殻の磁場が衝突の対極点にあることを明らかにしています. これらの磁場は太陽風を反転させ,ミニチュア磁気圏を形成し,衝撃磁化理論を支持する.
科学分野:
- 惑星科学 惑星科学
- 地質物理学 地質物理学とは地質物理学です.
- 宇宙物理学 宇宙物理学
背景:
- 月の地殻の磁場は,古代のダイナモ活動や衝撃誘発磁化の残骸である.
- 太陽風と月の磁場との相互作用は,月の宇宙天候と進化を理解するために重要です.
研究 の 目的:
- Lunar Prospector宇宙船からのデータを用いて月の地殻の磁場をマッピングする.
- 太陽風と高緯度の地殻の強い磁場との相互作用を調査する.
- 大規模な衝突盆地が月の地殻をその対極で磁性化するという仮説を検証するために.
主な方法:
- Lunar Prospector宇宙船からの磁気計と電子反射計のデータを活用した.
- インブリウムとセレニタティスの衝突盆地に対する対極の領域の電子反射マップを生成しました.
- 局所的で強い地殻の磁場との太陽風の相互作用を分析した.
主要な成果:
- 月面の地殻の磁場をマッピングし,特に大きな衝突盆地の反足部地域.
- 地殻の磁場は,これらの反足帯で南緯80度まで広がっていることが観察されました.
- インブリウム反極領域に強い磁場が発見され,太陽風の方向転換が可能となった.
結論:
- 発見は,反足点での衝撃誘発磁化仮説を支持する強力な証拠を提供します.
- インブリウムアンチポッドは,その強い地殻の磁場により,ミニチュア磁気圏,磁気殻,および弓の衝撃システムをホストしています.
- この研究は,月の磁場起源と太陽風の相互作用に関する私たちの理解を深めます.
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