火星で最近の地下水漏れと地表流出の証拠
1Malin Space Science Systems, Post Office Box 910148, San Diego, CA 92191-0148, USA.
まとめ
最近の火星の地形は,火星の表面のすぐ下には液体の水源が存在することを示唆しています. 火星軌道探査機カメラによって観測されたこれらの若い地質学的特徴は,地下水の浸透と流出を示しています.
科学分野:
- 惑星科学は惑星科学である.
- 地質学 地質学 地質学
- 水文学 水文学とは
背景:
- 1999年3月以来の火星地球測量機 (MOC) の高解像度画像は,火星の比較的若い地形を明らかにしています.
- これらの地形は主に中高緯度,特に南半球に位置する.
研究 の 目的:
- 火星表面の下の浅い深さにある液体の水源の存在を調査するために.
- 地下水の浸透と地表流出を示唆するジオモルフィックの特徴を分析する.
主な方法:
- 火星軌道探査機のカメラによって得られた高解像度火星画像の分析.
- 渓谷,南極の穴,火星の谷のジオモルフィック分析.
- 地形の年代測定は,重置と横断的な特徴の欠如に基づいています.
主要な成果:
- 渓谷,南極の穴,火星の谷の特徴を含む比較的若い地形は,最近の地質学的活動を示唆しています.
- ジオモルフィックの特徴は,地下水の浸透と地表流出を含むプロセスと一致しています.
- これらの地形の若さは,若い表面に重なり,衝突クレーターや砂丘のような重なりまたは横断的な特徴がないことによって証明されています.
- これらの特徴の限られた大きさと分布は,制限された地下水貯蔵庫を示唆しています.
結論:
- 証拠は,火星の浅い深さでアクセス可能な液体の水源の存在を示唆しています.
- 地下水の浸透と地表流出は,火星の景観を形作る活発なプロセスである可能性が高い.
- 発見は,局所的で,潜在的に限られた地下水貯水池を示しています.
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