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The influence of obliquity change on flow rates of ice-rich deposits on Mars
https://jaxa.repo.nii.ac.jp/records/20573
https://jaxa.repo.nii.ac.jp/records/2057347a9f59d-1d74-4a36-b354-e3539a1f4102
Item type | 会議発表論文 / Conference Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | The influence of obliquity change on flow rates of ice-rich deposits on Mars | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 火星 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星大気 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 火星大気 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 粘性流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 氷晶雲 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星表面 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 日照 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 極域 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 傾斜度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 惑星気象学 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 多結晶 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Mars | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary atmosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Martian atmosphere | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | viscous flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ice cloud | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary surface | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | insolation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | polar region | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | obliquity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | planetary meteorology | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | polycrystal | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
石井, 徹之
× 石井, 徹之× 宮本, 英昭× 佐々木, 晶× 田近, 英一× Ishii, Tetsuyuki× Miyamoto, Hirdy× Sasaki, Sho× Tajika, Eiichi |
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著者所属 | ||||||
東京大学 大学院理学系研究科 | ||||||
著者所属 | ||||||
東京大学 大学院工学系研究科 | ||||||
著者所属 | ||||||
国立天文台 | ||||||
著者所属 | ||||||
東京大学 大学院理学系研究科 | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo Graduate School of Science | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo School of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
National Astronomical Observatory | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo Graduate School of Science | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構宇宙科学研究本部 | |||||
出版者(英) | ||||||
出版者 | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS) | |||||
書誌情報 |
第38回月・惑星シンポジウム en : Proceedings of the 38th ISAS Lunar and Planetary Symposium p. 216-219, 発行日 2006-03 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The morphology of viscous flow features suggest that ice-rich deposits may still exist in middle latitudes on Mars today. According to the study of flow rates of these ice-dust mixtures based on a flow law for polycrystalline ice, crystal size of ice should be less than 100 m. However, crystal size of ice in polar glaciers on Earth is generally larger than 1 mm in diameter. This may suggest that flow rates of ice-rich deposits on Mars could have been considerably enhanced by increased solar insolation in summertime during periods of high obliquity. Here, we investigate flow rates of water ice for different insolation caused by obliquity change. We found that there is no significant difference in surface flow rates of an ice slab with thickness of 20 m between high and low obliquity conditions when the crystal size of ice is assumed to be 1 mm. This indicates that the Martian atmosphere might have been thicker during periods of high obliquity and that the stronger greenhouse effect might have caused global warming, which could have drastically quickened the flow rates of ice-dust mixtures. | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA0063350058 |