Oceanic Upper Mantle Dynamics

海洋上地幔动力学

• 批准号: 0118671
• 负责人: E M Parmentier
• 金额: $ 27.1万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-11-01 至 2004-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0118671&HistoricalAwards=false
• 关键词: Oceanic; Upper; Mantle; Dynamics

This project will continue modeling studies of the dynamics of flow in the oceanic upper mantle. The emphasis ofthese studies will be shifted to intraplate, off-axis processes, exploring mechanisms of oceanic matle dynamics that can explain intraplate volcanism and tectonics. Numerical and labratory experiments will be carried out. Initially, three mechanisms will be explored; convective instability, tensile cracks in the lithosphere, and viscous fingering of low-viscosity mantle into higher viscosity mantle during return flow.

该项目将继续模拟海洋上地幔流动动力学的研究。这些研究的重点将转移到板内、离轴过程，探索可以解释板内火山作用和构造的海洋地幔动力学机制。将进行数值和实验室实验。最初，将探索三种机制；在回流过程中，对流不稳定性、岩石圈的张性裂缝以及低粘度地幔向高粘度地幔的粘性指进。