金星の雲:粒子の大きさの分布測定

R G Knollenberg, D M Hunten

Science (New York, N.Y.)

|February 23, 1979

まとめ

ヴィーナス・パイオニアのデータは,ヴィーナス・ヴィーナスを明らかにした.

科学分野:

惑星科学は惑星科学である.
大気科学大気科学
クラウド物理学クラウド物理

背景:

金星の大気は複雑な雲のシステムで特徴付けられています.
これらの雲の組成と動態を理解することは,金星の大気の研究に不可欠です.

研究の目的:

パイオニア・ヴェーナス・クラウド粒子サイズスペクトロメーター実験の粒子サイズ分布を分析するために.
金星の大気中の化学組成と雲の領域を特定するために.
降水とエアロゾール形成の可能性を調査する.

主な方法:

パイオニア・ヴェーナスミッションから得られたマルチモダル粒子の大きさの分布の分析.
特定の粒子のサイズモードの時間的な変化 (出現,消失,成長,崩壊) の観測.
大きさのスペクトル特性の潜在的化学組成 (硫酸,自由硫黄) との相関.

主要な成果:

金星の雲は,化学組成が異なる粒子の複雑な混合物である.
マルチモダルのサイズ分布が観察され,硫黄酸と自由硫黄雲の領域を特定するのに役立ちました.
大きな粒子 (>30ミクロメートル) と大きな粒子質量負荷の発見は,降水の可能性を示唆しています.
主な雲層の下にあるユニークなエアロゾール構造は,最近の降雨イベントからの残留物を示す可能性があります.

結論:

パイオニア・ベーナス号のデータは,金星上の雲の動的過程の有力な証拠を提供します.
大粒子の存在と特殊なエアロゾール構造は,金星の降雨の仮説を支持する.
金星の雲の化学構造と動態に関するさらなる研究が必要である.

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