Collaborative Research: The African Mantle, A Case Study of Seismic Structure, Composition and Dynamics

合作研究：非洲地幔，地震结构、成分和动力学的案例研究

• 批准号: 0073643
• 负责人: Stephen Grand
• 金额: $ 7.9万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-10-01 至 2003-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0073643&HistoricalAwards=false
• 关键词: Collaborative; Research; African; Mantle; Case

Grand, StephenEAR-0073643This project will conduct a joint study of seismic structure, composition and dynamics of the mantle, with a strategic focus on Africa. Combining seismic forward waveform modeling and travel time inversion, we will attempt to map the geometry, magnitude and sharpness of seismic anomalies throughout the mantle beneath Africa. With improved seismic models of the lower and upper mantle, we will also study the geodynamical and compositional aspects of mantle anomalies using other geophysical constraints, including geoid, topography at the Earth's surface and the core-mantle boundary, intra-plate stress, plate motions, and experimental results from mineral physics.

该项目将对地幔的地震结构、组成和动力学进行联合研究，并将战略重点放在非洲。结合地震正演波形建模和走时反演，我们将尝试绘制整个非洲地幔下地震异常的几何形状、震级和清晰度。通过改进下地幔和上地幔的地震模型，我们还将使用其他地球物理约束来研究地幔异常的地球动力学和组成方面，包括大地水准面、地球表面地形和核心-地幔边界、板块内应力、板块运动和矿物物理学的实验结果。