Oxygen Escape from Mars, Venus and Earth

氧气从火星、金星和地球逃逸

• 批准号: 9816237
• 负责人: Larry Paxton
• 金额: $ 24.11万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-09-15 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816237&HistoricalAwards=false
• 关键词: Oxygen; Escape; Mars; Venus; Earth

9816237 Paxton A research team led by Dr. Larry Paxton will investigate the processes which populate the exospheres of Mars, Venus, and Earth and which can lead to significant escape of atomic oxygen from the Mars atmosphere. The group will produce model distributions of the exospheric atomic oxygen and validate the model by comparing it to existing observational data sets. The result will be a comparison of the mechanisms at work in each of the three planets' exospheres and a first order look at how they have varied over time. The main area of concentration will be the processes at work in the Martian atmosphere and the implications for atmospheric evolution. Funding for this project is shared among the Division of Astronomical Sciences, the Division of Atmospheric Sciences, and the Office of Multidisciplinary Activities in the Mathematical and Physical Sciences Directorate.

由拉里·帕克斯顿博士领导的一个研究小组将调查火星、金星和地球外逸层的形成过程，以及导致火星大气中原子氧大量逸出的过程。该小组将生成外逸层原子氧的分布模型，并通过与现有观测数据集进行比较来验证模型。结果将是对这三颗行星的外逸层的工作机制进行比较，并对它们如何随时间变化进行初步观察。研究的主要领域将是火星大气中起作用的过程及其对大气演化的影响。该项目的经费由天文科学司、大气科学司和数学和物理科学局的多学科活动办公室共同承担。