相关实验视频
Updated: Jul 12, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
概括
维京号1号在火星上层大气中检测到氧化 (NO). 火星的比地球的重75%,这表明随着时间的推移,大气中的大量逃逸.
科学领域:
- 行星科学 行星科学
- 大气化学 大气化学
- 天体生物学 天体生物学
背景情况:
- 了解行星大气层的演变对于评估可居住性至关重要.
- 维京号任务提供了火星大气层的早期现场数据.
研究的目的:
- 分析火星上层大气层的组成,使用维京1中性质谱仪的数据.
- 为了确定火星大气气体的同位素组成.
- 推断火星上大气逃逸和挥发性物质丰富的历史.
主要方法:
- 在火星上层大气层的现场分析,使用维京1飞船上的中性质谱仪.
- 测量关键大气元素如,碳和氧的同位素比例.
主要成果:
- 在火星上层大气中检测出氧化 (NO).
- 火星大气中碳和氧的同位素组成类似于地球的.
- 与地球相比,火星在-15 ((15) N) 中具有显著的丰富度 (约75%).
- 推断的初始丰度相当于至少2毫巴的部分压力.
- 所需的初始氧气丰度 (以CO2或H2O的形式) 相当于至少2巴的可交换大气压,以防止18O丰富.
结论:
- 火星大气逃逸导致了较重的同位素的显著丰富.
- 大量的大气和氧气可能存在于早期的火星上.
- 这些发现提供了对火星大气演变和潜在的过去可居住性的见解.
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