火星上のクレーターと,レーダーで見たスカープ
Science (New York, N.Y.)
|December 24, 1971
まとめ
1971年の火星のレーダーマッピングは,クレーターの詳細な特徴を明らかにし,40キロメートルの斜面を明らかにしました. この研究では,高解像度のレーダーを使用して,かつてない精度で火星の表面特性を分析しました.
科学分野:
- 惑星科学 惑星科学
- 地質学 地質学 地質学
- リモートセンシング (リモートセンサー)
背景:
- 火星の表面の特徴は,さまざまな遠隔感知技術を使用して研究されています.
- マリナー (Mariner) のような以前のミッションは,火星表面の写真データを提供した.
研究 の 目的:
- 1971年の反対運動中に火星の高解像度レーダー観測を行うため.
- 火星のクレーターと地表の地形の詳細な特徴を分析する.
- スカープのような地質学的特徴を特定し,地図化するために.
主な方法:
- 表面解像度1.3°の緯度と0.8°の経度を持つレーダー観測を用いた.
- 高反射率の地域では,約75mの表面高度測定精度を達成しました.
- レーダーで検出された特徴と,既存のマリンヤー号の写真データとの相関関係.
主要な成果:
- 多くのクレーターの詳細な特徴が測定されました.
- 観測された多くのクレーターは,以前マリナー号の写真で見られたクレーターと一致していた.
- 41°W,14°Sでスカルプが検出され,平均傾き6°で約40キロメートルに及ぶ.
結論:
- レーダーマッピングは,火星の表面特性を分析するために貴重な高解像度データを提供します.
- この研究は,写真撮影ミッションの以前の発見を確認し,拡張した.
- 検出されたスカルプは,さらなる調査を必要とする重要な地質学的特徴を表しています.
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