Detection of methane in the atmosphere of Mars

被引：546
|
作者：
Formisano, V
Atreya, S
Encrenaz, T
Ignatiev, N
Giuranna, M
机构：
[1] INAF IFSI, Ist Fis Spazio Interplanetario, I-00133 Rome, Italy
[2] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA
[3] Observ Paris, Lab Etud Spatiales & Instrumentat Astrophys, Observ Paris, F-92195 Meudon, France
[4] Russian Acad Sci IKI, Space Res Inst, Moscow 117810, Russia
来源：
SCIENCE | 2004年 / 306卷 / 5702期
关键词：
D O I：
10.1126/science.1101732
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We report a detection of methane in the martian atmosphere by the Planetary Fourier Spectrometer onboard the Mars Express spacecraft. The global average methane mixing ratio is found to be 10+/-5 parts per billion by volume (ppbv). However, the mixing ratio varies between 0 and 30 ppbv over the planet. The source of methane could be either biogenic or nonbiogenic, including past or present subsurface microorganisms, hydrothermal activity, or cometary impacts.
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页码：1758 / 1761
页数：4
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