The Dynamics of Mid-Ocean Ridges

大洋中脊的动力学

• 批准号: 9202599
• 负责人: E M Parmentier
• 金额: $ 34.76万
• 依托单位: Brown University
• 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: 1992-08-01 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9202599&HistoricalAwards=false
• 关键词: Dynamics; Mid; Ocean; Ridges

This is an ongoing theoretical study of the dynamics of mid- ocean ridges. A range of modeling studies will test existing hypothesis, explore new ones based on existing observations, and make predictions that will suggest new observations. The primary emphasis will be on spreading center structure and segmentation as well as the exisodic nature of the spreading. Specific tasks will be studies of convection generated by composional and thermal buoyancy, 3-D modeling of melt migration, the evolution of ridge geometry, the mechanical factors that control the spacing, dip, and displacement of ridge-parallel normal faults, the importance of strain-rate dependence of viscosity, and an extension of existing of existing 2-D models of the formation of the median valley to three dimensions.

这是对中洋脊动力学的持续理论研究。 一系列的建模研究将检验现有假设，根据现有观察结果探索新假设，并做出建议的预测，以表明新的观察结果。 主要的重点将是扩散中心结构和分割以及扩散的exisodic性质。 具体的任务将是通过组合和热浮力产生的对流的研究，熔体迁移的3-D模型，山脊几何的演变，控制脊率依赖的山脊 - 平行正常断层的间距，倾斜和位移的机械因素，粘度的依赖性的重要性，以及现有2-D模型的缩放量的延伸量的扩展。