タイタン・レーダー・マッパー (TITAN RADAR MAPPER) は,カッシーニのT3フライバイから観測した.
1Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA.
Nature
|June 9, 2006
まとめ
カッシーニは,カッシーニから
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
- リモートセンシング (リモートセンサー)
背景:
- 土星の衛星タイタンは厚い大気に覆われ,表面観測は難しい.
- 以前のミッションは,タイタンの表面の特徴に関する限られたデータを提供した.
研究 の 目的:
- カッシーニのT3フライバイからのレーダーデータを分析し,タイタンの表面の地形を特定し,特徴づけます.
- タイタンの表面を形作る地質学的プロセスを理解するために.
主な方法:
- カッシーニのタイタンレーダーマッパーからの高解像度合成開口レーダー (SAR) データを活用した.
- より広い表面の文脈のために,放射測定と散乱測定データを分析した.
主要な成果:
- タイタンの表面に衝突クレーターの最初の決定的な識別.
- 液体浸食を示唆する川の運河の広範なネットワークを観測した.
- 探知された表面上の暗い線が,縦断の砂丘の潜在的兆候である.
結論:
- タイタンの表面の画像は,地形の驚くべき多様性を示しています.
- レーダー画像の表面の大部分は地質学的に若いので,活動が続いていることを示しています.
- 証拠によると,衝突過程と流動過程の両方がタイタンで重要な役割を果たしている.
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