Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin

Professor of Physical Geography, University of Sheffield & Professor of Geology, UCLA

Professor of Geology and Seismology, University of Nevada, Reno

Professor of Geology, University of Oregon

Professor, Universidade Federal do Rio Grande do Norte, Brazil

US Geological Survey

Research Geologist, US Geological Survey

Professor of Geophysics, University of Southampton

University of Washington

Universidad Austral de Chile