Laboratory Experiments in Geodynamics

地球动力学实验室实验

• 批准号: 9627891
• 负责人: Peter Olson
• 金额: $ 12.5万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-07-15 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9627891&HistoricalAwards=false
• 关键词: Laboratory; Experiments; Geodynamics

9627891 Olson The PI proposes to conduct laboratory fluid dynamics experiments with applications to flow in the Earth's mantle and core. The PI will study experimentally the convective processes responsible for the seismic anisotropy that has been detected in the upper mantle and in the inner core, and will also investigate thermochemical convection in liquid metal subject to the influences of rotation and magnetic fields, with application to the geodynamo. The experimental results will be compared with both numerical calculations of magnetoconvection and with the flow patterns in the outer core. Measurements of the elastic and electrical anisotropy of solid gallium crystallizing in the presence of convection, rotation and magnetic fields will be compared with observations of inner core anisotropy as a test of theories for the growth of the inner core. ***

9627891 Olson PI提议进行实验室流体动力学实验，并应用在地球地幔和核心中流动。 PI将通过实验研究，导致在上幔和内部核心中检测到的地震各向异性的对流过程，并将研究液态金属中受到旋转和磁场影响的液态金属的热化学对流，并应用于Geodynamo。 实验结果将与磁反射的数值计算以及外芯中的流动模式进行比较。 在对流，旋转和磁场存在下结晶的固体凝固液的弹性和电动各向异性的测量将与内核各向异性的观察结果进行比较，以测试内核生长的理论。 ***