摘要
I arrived at Caltech as a graduate student in the summer of 1979.With a BSc degree in physics,I knew little to nothing about seismology or geophysics.The Seismo Lab encouraged new students to immediately start some research with a great latitude on what to work on.That summer I started projects relocating aftershocks of the 1978 Oaxaca earthquake with Karen McNally,learning a normal mode code with Bernard Minster,and investigating the source mechanism of the 1979 St.Elias earthquake with Hiroo Kanamori.
