| タイトル | Martian Methane From a Cometary Source: A Hypothesis |
| 本文（外部サイト） | http://hdl.handle.net/2060/20160003494 |
| 著者（英） | Treiman, A.; Fries, M.; Cooke, W.; Eigenbrode, J.; Conrad, P.; ten Kate, I. L.; Sykes, M.; Steele, A.; Matney, M.; Archer, D.; Christou, A.; Niles, P. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2016-03-21 |
| 言語 | eng |
| 内容記述 | In recent years, methane in the martian atmosphere has been detected by Earth-based spectroscopy, the Planetary Fourier Spectrometer on the ESA Mars Express mission, and the NASA Mars Science Laboratory. The methane's origin remains a mystery, with proposed sources including volcanism, exogenous sources like impacts and interplanetary dust, aqueous alteration of olivine in the presence of carbonaceous material, release from ancient deposits of methane clathrates, and/or biological activity. An additional potential source exists: meteor showers from the emission of large comet dust particles could generate martian methane via UV pyrolysis of carbon-rich infall material. We find a correlation between the dates of Mars/cometary orbit encounters and detections of methane on Mars. We hypothesize that cometary debris falls onto Mars during these interactions, generating methane via UV photolysis. |
| NASA分類 | Lunar and Planetary Science and Exploration |
| レポートNO | JSC-CN-35561 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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