ENGELHART, Simon, Department of Earth and Environmental Science, Univerity of Pennsylvania, 240 South 33rd Street, Philadelphia, PA 19104, ANDERSON, Clive, Department of Probability and Statistics, University of Sheffield, Hicks Building, Sheffield, S3 7RH, United Kingdom, DOUGLAS, Bruce C., Laboratory for Coastal Research, Florida International University, Miami, FL 33199, HILL, David, School of Civil and Construction Engineering, OR 97331-3212, Oregon State University, 220 Owen Hall, Corvallis, OR 97331-3212, HORTON, Benjamin, Department of Earth and Environmental Science, University of Pennsylvania, 240 South 33rd Street, Philadelphia, PA 19104, PELTIER, W. Richard, Physics, University of Toronto, 60 St George Street, Toronto, ON M5S 1A7, Canada, VAN DE PLASSCHE, Orson, Faculty of Earth and Life Sciences, Vrije Universiteit, De Boelelaan 1085, Amsterdam, 1081 HV, Netherlands, SHENNAN, Ian, Sea Level Research Unit, Department of Geography, Durham University, Durham, DH1 3LE, United Kingdom, THIELER, E. Robert, Coastal and Marine Geology Program, U.S. Geological Survey, Woods Hole Science Center, 384 Woods Hole Road, Woods Hole, MA 02543 and TÖRNQVIST, Torbjörn E., Department of Earth and Environmental Sciences, Tulane University, 6823 St. Charles Avenue, New Orleans, LA 70118-5698, simoneng@sas.upenn.edu, simoneng@sas.upenn.edu