RUI: Hydromagnetic Waves in a Thick Rotating Spherical Shell

RUI：厚旋转球壳中的水磁波

• 批准号: 8802767
• 负责人: Steven London
• 金额: $ 4.18万
• 依托单位: University of Houston - Downtown
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8802767&HistoricalAwards=false
• 关键词: RUI; Hydromagnetic; Waves; Thick; Rotating

The purpose of this project is to model the Earth's outer core as a thick rotating spherical shell containing an inviscid, perfectly conducting fluid of constant density in the presence of a basic toroidal magnetic field. The propagation of slow hydromagnetic waves in this model is to be studied using multiple- scale asymptotic techniques. The project will emphasize the relationship between the direction of wave propagation, the spherical geometry, wave trapping and instability. Possible explanations for the westward drift of the Earth's magnetic field will be sought.

这个项目的目的是把地球的外核模拟成一个厚的旋转球壳，在基本的环向磁场存在下，它包含一种无粘性的、密度恒定的完美导电流体。用多尺度渐近技术研究了慢磁波在该模型中的传播。该项目将强调波的传播方向、球面几何形状、波捕获和不稳定性之间的关系。人们将寻求对地球磁场向西漂移的可能解释。