- Associate Professor of Earth Sciences, University of Southern California,
2001-2004.
- Visiting Professor, Ludwig-Maximilians University, Munich, Germany, 2003.
- Assistant Professor of Earth Sciences, University of Southern California,
1997-2000.
- Visiting Professor, the Earthquake Research Institute, University
of Tokyo, Japan, 1996.
- Research Associate, Harvard University, 1993-1995.
- Visiting Research Associate, The Hebrew University of Jerusalem,
Israel, 1995.
- Postdoctoral fellow (with Professor James
R. Rice), Harvard University, 1991-1993
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