金星:マライナー10号の写真による大気運動と構造

B C Murray, M J Belton, G E Danielson

Science (New York, N.Y.)

|March 29, 1974

まとめ

マリナー10号は金星を明らかにした.

科学分野:

惑星科学惑星科学
大気科学大気科学
リモートセンシング (リモートセンサー)

背景:

金星は,複雑な循環パターンを持つダイナミックな大気を持っています.
以前の研究では,金星の急速な逆行回転が示唆されていた.

研究の目的:

高解像度画像を用いて金星の大気循環を分析する.
金星の上部トロポスフィアと下部ストラトスフィアの動態を調査する.

主な方法:

マリナー10号はテレビカメラを活用して,金星の画像を撮影した.
8日間にわたって収集されたデータです.
100メートルから130キロメートルの解像度を達成しました.

主要な成果:

トロポスフィアの上部とストラトスフィアの下部における大気循環の一般的なパターンを示した.
半球間の対称的な大気流が観測されました.
サブソーラー領域とダウンウィンドにおける持続的な大規模なコンベクションが特定されました.
ゾナルの流れとコンベクションの間のダイナミックな相互作用を示す弓状の波が検出されました.

結論:

約100m/sのゾナル (東西) 赤道運動が確認され,4日間の逆行回転を支えている.
緯度とともに角速度が増加することを実証した.
金星のゾナル大気運動と静止コンベクティブ領域の相互作用を強調した.

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