Stanley Baugh Grant, Virginia Polytechnic Institute and State University, Civil and Environmental Engineering, Blacksburg, VA, United States, Jesus D Gomez-Velez, Vanderbilt University, Civil and Environmental Engineering, Nashville, TN, United States, Jud W Harvey, USGS, Reston, VA, United States, Kevin R Roche, University of Notre Dame, Notre Dame, IN, United States, Marco Ghisalberti, University of Western Australia, Crawley, WA, Australia and Ian Guymer, University of Sheffield, Sheffield, United Kingdom