3ミクロン近くの赤外線吸収が,火星の極地上に記録された

K C Herr, G C Pimentel

Science (New York, N.Y.)

|October 24, 1969

まとめ

マリナー7号は,火星上で予期せぬスペクトル特徴を検出しました.

科学分野:

惑星科学は惑星科学である.
スペクトル顕微鏡検査です.
火星探査火星探査

背景:

火星の南極帽は,火星の気候と地質を研究するための重要な領域です.
以前のスペクトル解析では,マリナー7号の飛行中に観測された特徴を特定できなかった.

研究の目的:

マリナー7号が火星南極点の近くで観測したユニークな赤外線吸収帯を分析・解釈する.
これらのスペクトル特徴の構成と起源を特定するために.

主な方法:

マリナー7号の火星上空飛行中の赤外線スペクトロスコーピー.
3020センチメートルと3300センチメートルの間にある吸収帯の分析.
61°Sから80°Sの緯度間のスペクトルデータの地理的位置づけ.

主要な成果:

鮮明で鋭い吸収帯は3020cmと3300cm−1.1の近くで記録された.
これらの帯は,メタンとアンモニアの周波数と一致しています.
これらの特徴は,これまで報告されていない,1ミリメートル以上の厚さの固体二酸化炭素のスペクトルシグネチャーに起因しています.
最大光学密度は南緯68度,東緯341度近くで観測されました.

結論:

観測されたスペクトルの特徴は,火星の南極帽の特定の位置に厚い固体二酸化炭素堆積物が存在することを示唆しています.
これらの特徴の地理的位置は,潜在的な貢献要因のさらなる調査を正当化します.
この発見は,火星の南極圏の組成と表面プロセスに関する新しい洞察を提供します.

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