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Updated: Jul 12, 2026

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Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
Published on: July 30, 2020
マリナー9号による火星とその衛星のテレビ偵察: 予備的な結果
まとめ
火星の表面の特徴は,カルデラや南極帽に似たクレーターなど,1971年に塵の霧を通して観測されました. この研究は,火星の衛星フォボスとデイモスの最初のクローズアップ画像と次元も提供しています.
科学分野:
- 惑星科学 惑星科学
- 火星の地形学 火星地形学
- 太陽系探査 太陽系探査について
背景:
- 1971年の火星の初期観測は,地球規模の大量のダストハズによって妨げられた.
- 表面の特徴は暗く,南極帽や特定の暗い斑点のような顕著なランドマークのみが目に見える.
研究 の 目的:
- 大気中の塵を通して観測された火星表面の特徴を記述する.
- ダークスポットと関連するクレーターの形状を分析する.
- 火星の衛星,フォボスとデイモスを特徴づけるために.
主な方法:
- 軌道への挿入と,その後の大気圏のクリアリングにより,表面観測が可能になった.
- 可視表面の特徴と火星の衛星の写真分析.
- 衛星の寸法とアルベドの測定.
主要な成果:
- 表面上には,幅約100kmの暗い斑点が観察され,中央には,沈没 (カルデラ) を示唆する縁のないクレーターが見られました.
- 南極帽は正規の縁を示し,凍結パターンは地形を示した.
- フォボスとデイモスは,特定の寸法と低アルベドスを有する不規則でクレーター状の天体として特徴付けられました.
結論:
- カルデラのような構造を含む火星の表面の特徴は,大気中の塵にもかかわらず見分けることができました.
- 氷の分布は,表面の地形と高さについての手がかりを提供しました.
- フォボスとデイモスは,小さく,不規則な形状で,大きなクレーターで覆われた天然衛星であることが確認されました.
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