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Updated: Jul 12, 2026

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Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
ガリレオ・エンタカントラでの金星の地上からの近赤外線画像観測
まとめ
金星の地上からの近赤外線観測は,雲の特徴と動きを明らかにした. 異なる自転周期により,これらの特徴は金星の大気圏の異なる高度で形成されていることが示唆されています.
科学分野:
- 惑星科学は惑星科学である.
- 大気科学 大気科学
- 金星科学 金星科学
背景:
- 金星の夜間の大気は,ダイナミックな雲の特徴を示しています.
- これらの特徴を理解することは,大気動力学の研究にとって極めて重要です.
研究 の 目的:
- 金星の夜側近赤外線マークの形態と運動を分析するために.
- 地上からの観測を用いて大気動力学と雲の高さを調査する.
主な方法:
- 1990年1~2月の地上観測所のグローバルネットワークからの近赤外線画像を利用した.
- 雲の形態学,範囲,および,ガリレオの金星との遭遇の前,その間,およびその後の回転期を分析した.
主要な成果:
- 低緯度の恒常的な暗雲 (回転周期5.5日) が観測されました.
- 低緯度の小さな標識は,異なる回転周期 (7.4日) を示し,高度が異なることを示唆した.
- 中緯度では明るい帯が特徴で,高緯度では暗くて特徴のない帯が特徴で,高不透明性を示しています.
- 水蒸気分布は,下層大気圏における有意な水平の傾きを示さなかった.
結論:
- 金星の雲の特徴の明確な回転周期は,異なる形成高度を示しています.
- 高緯度の暗闇は,より高い高度でより大きな雲の不透明性を示唆しています.
- 下層大気は,水蒸気含有量が比較的均一であるように見える.
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