Thermal and Fluid Flow Models of Hydrothermal Circulation atOceanic Spreading Centers

海洋扩散中心热液循环的热流和流体流动模型

• 批准号: 8911396
• 负责人: Rachel Haymon
• 金额: $ 13.17万
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-15 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8911396&HistoricalAwards=false
• 关键词: Thermal; Fluid; Flow; Models; Hydrothermal

This is a project to develop finite element numerical models of hydrothermal circulation at an ocean ridge axis. The modeling will specifically focus on along-axis circulation driven by heat transfer from a magma chamber. Various effects such as anisotropic permeability, combined fracture and porous permeability, variable heat input and double diffusive convection. The model results will be constrained to the extent possible by observational and field data from ocean ridge crests and ophiolites. %%% Hydrothermal heat transfer at the sea floor represents approximately 30% of the earth's heat budget. The details of the hydrothermal circulation are not well known. This project will evaluate a number of potential factors that control the pattern and duration of the circulation. Dr Haymon has a great deal of observational and field expertise, which will be very useful for putting the numerical models into a geologic context. Dr. Spera is a very able numerical modeler.

这是一个开发大洋脊轴热液循环有限元数值模式的项目。建模将特别关注由岩浆室的热量传递驱动的沿轴循环。各种影响，如各向异性渗透率，裂缝和孔隙的联合渗透率，可变的热输入和双扩散对流。模型的结果将受到来自洋脊和蛇绿岩的观测和现场数据的最大限度的限制。海底的热液热传递约占地球热收支的30%。热液循环的细节还不为人所知。该项目将评估一些控制循环模式和持续时间的潜在因素。海蒙博士拥有大量的观测和现场专业知识，这将对将数值模型置于地质背景下非常有用。斯佩拉博士是一位非常能干的数值模型师。