Geodynamicist Shi Joyce Sim, Georgia Tech (IMAGE) Georgia Institute of Technology Caption Shi Joyce Sim is a research scientist in the School of Earth and Atmospheric Sciences at Georgia Tech. Credit Georgia Tech (Shi Joyce Sim) Usage Restrictions Non-commercial License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.