Advances for 3-D Magnetotelluric Modeling

3-D 大地电磁建模的进展

• 批准号: 9218466
• 负责人: Theodore Madden
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9218466&HistoricalAwards=false
• 关键词: Advances; Magnetotelluric; Modeling

Naturally induced electromagnetic fields (magnetotelluric fields) are highly dependent on both the vertical and horizontal conductivity structure of the earth and are greatly influenced by three-dimensional features. Three-dimensional magnetotelluric modeling algorithms are critical for correctly interpreting observed data, but the current generation of algorithms are computationally expensive and time-consuming. The objective of this proposal is to develop three-dimensional magnetotelluric modeling algorithms that can model fully inhomogeneous earth models and that are quick and can be run on modern scientific workstations. The algorithm to be developed through this project will use conjugate direction relaxation algorithms coupled with appropriate preconditioners and a multiple scaling technique.

自然感应电磁场（大地电磁 场）高度依赖于垂直和水平 地球的电导率结构，并受到很大的影响 三维特征。 三维大地电磁 建模算法对于正确解释 观察到的数据，但目前的算法是 计算昂贵且耗时。 的目标 该建议是开发三维大地电磁 可以模拟完全不均匀地球模型的建模算法 而且速度快，可以在现代科学 工作站。 通过该项目开发的算法 将使用共轭方向松弛算法， 适当的预处理器和多尺度技术。