Diffracted Wave Studies of the Structure of the Core-Mantle Boundary

核幔边界结构的衍射波研究

• 批准号: 9205368
• 负责人: Michael Wysession
• 金额: $ 11万
• 依托单位: Washington 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: 1992-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205368&HistoricalAwards=false
• 关键词: Diffracted; Wave; Studies; Structure; Core

This research is to study the seismic velocities and, by inference, the dynamical processes occurring within D", the base of the mantle just above the core-mantle boundary. Diffracted P and S waves and core phases will be used as recorded on digital broad-band seismometers. Many processes that occur within the earth - convection, hot spot generation, geomagnetic field production, cooling of the core -would be much better understood if we had improved resolution of D", the thermal and/or chemical boundary layer at the base of the mantle. It is the aim of this project to achieve this resolution, and in doing so, knowledge of deep earth dynamics.

这项研究旨在研究地震速度，并通过推断研究 D" 内发生的动力学过程，D" 是核幔边界上方的地幔底部。将使用数字宽带上记录的衍射 P 波和 S 波以及岩心相位。如果我们提高了 D”（热边界层和/或化学边界层）的分辨率，地球内部发生的许多过程（对流、热点产生、地磁场产生、地核冷却）就会更好地被理解。在地幔底部。 该项目的目的是实现这一解决方案，并在此过程中获得地球深层动力学知识。