Investigation of the properties and the processes in planetary near-surface layers

研究行星近地表层的性质和过程

• 批准号: 5417881
• 负责人: Professorin Dr. Doris Breuer
• 金额: --
• 依托单位: Institut für Materialphysik im Weltraum
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5417881?language=en
• 关键词: Investigation; properties; processes; planetary; near

Terrestrial planets differ from the giant planets in that they all possess a solid surface. Their near surface layers, either regolith made of refractory particles or ice/regolith mixtures, are the interface with the atmosphere/space. They critically determine the exchanges of volatiles, refractory matter and energy with the surrounding environment. We propose to study example surface layers by modelling and experiment to find suitable techniques for measuring the physical properties and structure of such surface layers based on our experiences with the instruments PLUTO, MUPUS-PEN and CASSE. The knowledge of the physical properties should help to improve our understanding of exchange processes (thermal and volatile exchanges) as well as of the depositional and erosive history of the surface layers. As soon as PLUTO/Beagle 2 and MER mission data - to which the proposers have access to - become available these models will be applied to infer the regolith deposition histories at the landing sites.

类地行星与巨行星的不同之处在于它们都有固体表面。它们的近表层，要么是由难熔颗粒构成的风化层，要么是冰/风化层的混合物，是与大气/空间的界面。它们决定性地决定了挥发物、难熔物质和能量与周围环境的交换。我们建议在冥王星、MUPUS-PEN和CASSE仪器的基础上，通过建模和实验来研究实例表面层，以寻找合适的技术来测量这些表面层的物理性质和结构。物理性质的知识应该有助于提高我们对交换过程（热交换和挥发性交换）以及表层沉积和侵蚀历史的理解。一旦冥王星/小猎犬2号和MER任务数据（提案人可以访问）变得可用，这些模型将被应用于推断着陆点的风化层沉积历史。