发布时间 :2014-04-09  阅读次数 :1930

报告题目:Visualizing planetary core formation

报 告 人: Dr. Yingwei Fei (费英伟)

Professor, Geophysical Laboratory, Carnegie Institution of Washington, USA &Yangtze River Scholars Chair Professor, Peking University

报告时间:4月11日 上午 10:00-11:00


联 系 人:魏冬青 教授   This e-mail address is being protected from spambots. You need JavaScript enabled to view it.



Terrestrial planet formation starts with small dust grains and ends with differentiated bodies like the Earth with a metallic core. The central question to be address is how the metal migrated to the center of the planet. Planet differentiation could proceed through efficient liquid-liquid separation or by percolation of liquid metal in a solid silicate matrix, depending on the size and interior temperature of the planetary bodies. In the laboratory, I simulate the processes by conducting high-pressure and temperature experiments under the conditions of planet formation. Using a newly developed imaging technique, we can visualize the process by monitoring the migration of the metal that forms the core in three dimensions (3D). The new imaging technique provides a powerful tool to precisely determine the critical parameters needed for theoretical modeling and paves the way for researchers to explore planetary core formation processes through experimental simulation combined with visualization.


费英伟(Yingwei Fei), 博士,国际顶尖级的高压和实验地球化学家。1982年毕业于浙江大学,1989 年在纽约城市大学获博士学位。现任美国华盛顿卡内基研究院地球物理实验室高级研究员(终身教授),美国地球物理学会AGU会士,浙江大学客座教授。已经发表高水平学术论文140多篇,其中在Science、Nature上发表论文10篇。美国地球深部碳循环项目(Sloan Foundation on DEEP CARBON CYCLE Project,总投入2500万美元)的主要发起人和学术组织者之一。研究领域包括:高压实验地球化学、岩石学、矿物物理学;高压地球和行星科学。