Recollections of my mentor,Donald V.Helmberger

• 作者: Stephen P.Grand
• 来源期刊: 地震学报（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: Special Memorial Issue for Donald Vincent Helmberger
• 页码范围: 14-16
• 页数: 3页
• 语种: 英文

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,lear-ning a normal mode code with Bernard Minster,and inves-tigating the source mechanism of the 1979 St.Elias earthquake with Hiroo Kanamori.I didn't feel particularly excited by my early projects,probably due to my ignorance,so I was still open to some new direction.