Modeling of the Core & Mantle Based on Observations of Nutations & Tides

核心建模

• 批准号: 9206663
• 负责人: Irwin Shapiro
• 金额: $ 22万
• 依托单位: Smithsonian Institution Astrophysical Observatory
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-15 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9206663&HistoricalAwards=false
• 关键词: Modeling; Core; & Mantle; Based

This research will be on the nutational and deformational responses of the Earth to lunisolar perturbations, and on geophysical phenomena which affect these reposes; it will consist of theoretical investigations, as well as analyses related to space-geodetic data. The primary goals are, firstly, to obtain more accurate knowledge of the Earth's structure and properties, especially those relating to the fluid outer and solid inner cores, and secondly, to apply this knowledge to derive accurate formulae, including the effects of mantle anelasticity, ocean tides, etc., for nutation amplitudes and tidal parameters. The theoretical studies will take advantage of the developments in the theory of nutations including the influence of inner core dynamics, and in the formulation of the tidal deformation problem in computationally efficient form.

这项研究将研究地球对日月扰动的章动和变形响应，以及影响这些静止的地球物理现象；它将包括理论研究以及与空间大地测量数据相关的分析。 主要目标首先是获得对地球结构和性质的更准确的了解，特别是与流体外核和固体内核有关的结构和性质，其次是应用这些知识推导出准确的公式，包括地幔滞弹性、海洋潮汐等对章动幅度和潮汐参数的影响。 理论研究将利用章动理论的发展，包括内核动力学的影响，以及以计算有效的形式表述潮汐变形问题。