US-Federal Republic of Germany Cooperative Research: New Models of the Inner Structure, Mantle Dynamics and Thermal Evolution of Mars

美德合作研究：火星内部结构、地幔动力学和热演化新模型

• 批准号: 8922136
• 负责人: Gerald Schubert
• 金额: $ 1.44万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8922136&HistoricalAwards=false
• 关键词: US; Federal; Republic; Germany; Cooperative

This award supports Dr. Gerald Schubert of UCLA to collaborate in astronomy research with Dr. Tilman Spohn of the Institute of Planetology of the University of Muenster, Federal Republic of Germany. They are working to develop new models of the inner structure, mantle dynamics and the thermal and chemical evolution of Mars. Dr. Spohn has developed a program for the computation of self- consistent planetary models, which include the pressure dependence of the thermal expansion coefficient. Dr. Schubert has a three- dimensional convection program applicable to Mars and access to Cray computers. Recent and planned missions of the USA and USSR have moved Mars to the center of interest in planetology. Current models of Mars are almost ten years old and no longer reflect today's knowledge of the thermodynamics and high pressure physics of terrestrial planetary material, the age of the Martian crust and core, and tectonics. Preliminary calculations by the collaborators suggest significant revisions to previous models. The models they are developing should be of relevance to questions concerning the formation of Mars and its evolution, the interpretation of magnetic field data from future missions to Mars, and cosmogonic and cosmochemical considerations of the structure and evolution of the solar system.

该奖项支持加州大学洛杉矶分校的Gerald Schubert博士与德意志联邦共和国明斯特大学行星研究所的Tilman Spohn博士在天文学研究方面进行合作。他们正在努力开发火星内部结构、地幔动力学以及热和化学演化的新模型。斯波恩博士开发了一个计算自洽行星模型的程序，其中包括热膨胀系数与压力的关系。舒伯特博士有一个适用于火星和克雷计算机的三维对流程序。美国和苏联最近和计划中的任务已经将火星转移到了行星学感兴趣的中心。目前的火星模型已有近十年的历史，不再反映当今关于类地行星物质的热力学和高压物理、火星地壳和核心的年龄以及构造的知识。合作者的初步计算表明，对以前的模型进行了重大修订。他们正在开发的模型应该与以下问题相关：火星的形成和演化、对未来火星任务中磁场数据的解释，以及太阳系结构和演化的宇宙学和宇宙化学考量。