Investigations of the Geodynamo

地球发电机的研究

• 批准号: 0073988
• 负责人: Jeremy Bloxham
• 金额: $ 22.5万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-12-01 至 2003-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0073988&HistoricalAwards=false
• 关键词: Investigations; Geodynamo

Bloxham EAR -0073988 Investigations of the geodynamo process that is responsible for generation of the Earth's magnetic field are proposed. The following areas will be addressed: 1. Investigation of the basic underlying mechanisms of magnetic field generation in recent numerical models of the geodynamo. 2. Investigation of the parameter regime of numerical dynamo models, seeking in particular to further our understanding of the role of inertial and viscous effects on the geodynamo. 3. Investigation of thermal core-mantle interactions and their role in controlling the morphology of the main field and its secular variation. 4. Investigation of the effect of inner core gravitational coupling on the geodynamo. 5. Analysis of features observed in maps of the magnetic at the core-mantle boundary using a numerical dynamo model. 6. Analysis of the frozen-flux approximation. 7. Dynamo code development, including development of a distributed memory version of the code suitable for running on a network of Intel x86 based machines, and initial development of a community dynamo model.

Bloxham EAR -0073988 建议对负责产生地球磁场的地球发电机过程进行研究。将讨论以下领域： 1. 研究最新地球发电机数值模型中磁场产生的基本机制。 2. 研究数值发电机模型的参数体系，特别是进一步了解惯性和粘性效应对地球发电机的作用。 3.研究核幔热相互作用及其对主磁场形态及其长期变化的控制作用。 4.研究内核引力耦合对地球发电机的影响。 5. 使用数值发电机模型分析地核-地幔边界磁力图中观察到的特征。 6. 冻结通量近似分析。 7. Dynamo 代码开发，包括开发适合在基于 Intel x86 的机器网络上运行的代码的分布式内存版本，以及社区 Dynamo 模型的初步开发。