Janet S. Cockrell Centennial Chair in Engineering, Dept. of Civil, Architectural, and Environmental Engineering, Univ. of Texas, Austin, TX 78712.
Assistant Professor, Departamento de Geologia, Facultad de ciencias fisicas y matematicas, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile.
Director of Geosciences, Pacific Gas and Electric, 77 Beale St., San Francisco, CA 94105.