火星の地下をレーダーで探査した
Giovanni Picardi1, Jeffrey J Plaut, Daniela Biccari
1Infocom Department, "La Sapienza" University of Rome, 00184 Rome, Italy.
Science (New York, N.Y.)
|December 2, 2005
まとめ
マース・エクスプレス軌道探査機 (Mars Express orbiter) は,火星の軌道に乗っている.
科学分野:
- 惑星科学は惑星科学である.
- 地質物理学 地質物理学とは地質物理学です.
- レーダー・リモートセンシング
背景:
- 火星エクスプレス軌道探査機のMARSIS機器は,火星の地下を調査しています.
- 過去の研究では,軌道データを用いて火星の地質学的特徴を調査した.
研究 の 目的:
- 火星の地表を特徴付けるため,火星エクスプレス軌道探査機からのレーダーデータを分析するために.
- クライス・プランティアの北部の低地における地質学的構造を特定し,解釈する.
主な方法:
- Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) を使って,地表とイオノスフィアを観測するレーダーを導入しました.
- 火星の地下堆積物におけるレーダー信号の浸透と反射パターンの分析.
主要な成果:
- レーダー信号は,火星の地下をキロメートルの深さまで探査することに成功した.
- Chryse Planitiaの直径約250kmの準円形の構造は,浅い埋もれた衝撃盆地として特定されました.
- 盆地に関連した平面反射器,おそらく厚さ >1 km の低損失鉱床が検出されました.
結論:
- MARSISのデータは,火星の重要な地下構造を明らかにしています.
- 特定された盆地と関連する埋蔵物は,火星の衝突の歴史と地質進化の洞察を提供します.
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