My research activities focus on efforts to develop an improved framework for the physics of earthquakes and faults using a variety of theoretical tools and observational results. Examples of current research interests include dynamic ruptures and seismic waves in fault structures with bimaterial interfaces and geometrical heterogeneities, damage rheology for irreversible brittle deformation, material fragmentation and pulverized fault zone rocks, dynamics of avalanches in granular materials, high resolution imaging of fault zone environments, analysis of earthquake source properties, and correlations between spatio-temporal seismicity patterns and properties of fault zones (e.g. bimaterial interfaces) and the crust (e.g. heat flow). See Publications for recent papers on these topics.


  • B.Sc. Geology and Physics, The Hebrew University of Jerusalem (October 1982)
  • Ph.D. Geophysics and Seismology (with Professor Keiiti Aki)), University of Southern California (August 1990)

Professional Experience

  • Visiting Professor, University of Oslo, Norway, 2017.
  • Visiting Professor, University Grenoble Alps, France, 2017.
  • Visiting Professor, Rice University, 2017.
  • Visiting Professor, Joseph Fourier University, Grenoble, France, 2011, 2014.
  • Visiting Professor, GeoForschungsZentrum GFZ, Potsdam, Germany, 2011.
  • Visiting Professor, University of Western Australia, Perth, Australia, 2010.
  • 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, 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

Classes Taught