Dynamics of earth and planetary interiors

地球和行星内部的动力学

• 批准号: 217591-2008
• 负责人: Heimpel, Moritz
• 金额: $ 1.64万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=496905
• 关键词: Dynamics; earth; planetary; interiors

The Earth and other planets of our solar system are dynamical bodies from their surfaces to their cores. Studies in comparative planetology address the dynamical history of the Earth and planets, the nature of large scale planetary turbulence, the origins of the geomagnetic planetary magnetic fields, the origin of life on Earth and the possibility of life on Mars. We use numerical models of planetary convection along with observational and analytical methods in projects that range from integrated studies of global and regional seismology and the dynamics of solid-state convection in the Earth's mantle to numerical simulations of winds and magnetic fields of the outer planets. The mantle dynamics and seismology study is aimed at understanding the fate of subducting slabs as they interact with the upper mantle transition zone and penetrate into the deep mantle. This work is being carried out with a PhD student and in collaboration with the global seismology group at U of A. In the planetary dynamics models, numerical simulations are compared to models derived from previous and ongoing space missions (such as the Cassini spacecraft, currently orbiting Saturn). This work is in collaboration with researchers from UCLA and the Max Planck Institute for Solar System research in Lindau, Germany. Coupled models of convective dynamo action and solar wind - magnetosphere interaction are presently being developed to study the Earth, Mercury and Mars. These models help us to understand Mercury's intrinsic and relatively weak magnetic field, which will be mapped by the MESSENGER spacecraft, starting with a flyby through the magnetosphere in January, 2008 and orbit insertion in 2011. Collaborators include the Space Physics group at U of A, and the Carnegie Institution in Washington DC -- home of the MESSENGER mission. A planned project on the early Mars dynamo will integrate core, mantle, amospheric, and magnetospheric dynamics. This project will benefit greatly from interdepartmental interaction through the newly created Institute for Space Science, Exploration and Technology (ISSET) at the University of Alberta.

我们太阳系的地球和其他行星是从其表面到岩心的动态体。比较行星学的研究介绍了地球和行星的动态历史，大规模行星湍流的性质，地磁行星磁场的起源，地球生命的起源以及火星上生命的可能性。我们使用行星对流的数值模型以及观察和分析方法的项目，范围从全球和区域地震学的综合研究以及地球地幔中固态对流的动力学到对外行星的风和磁场的数值模拟。地幔动力学和地震学研究旨在理解俯冲板与上地幔过渡区相互作用并渗透到深层地幔时的命运。这项工作是与A. U的全球地震学小组合作进行的。这项工作与加州大学洛杉矶分校（UCLA）的研究人员和德国林道（Lindau）的马克斯·普朗克（Max Planck）太阳能系统研究所合作。目前正在开发对流发电机和太阳能风层相互作用的对流发电机和太阳能相互作用的耦合模型来研究地球，汞和火星。这些模型有助于我们了解Mercury的内在磁场和相对较弱的磁场，这将由Messenger航天器绘制，从2008年1月的磁层中的Flyby和2011年的Orbit插入开始。火星早期发电机的计划项目将整合核心，地幔，amospheric和磁层动力学。该项目将通过艾伯塔大学的新成立的太空科学，勘探与技术研究所（ISSET）从部门间的互动中受益匪浅。