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.

引用

页码：1758 / 1761

页数：4

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