1. Professor, Dept. of Geography, Univ. of Guelph, Guelph ON, Canada N1G 2W1.
2. Fluvial Geomorphologist, Parish Geomorphic, 10 Mountainview Rd. South, Suite 207, Georgetown ON, Canada L7G 4J9.
3. Professor of Process Sedimentology, School of Earth Sciences, Univ. of Leeds, Leeds LS2 9JT, West Yorkshire, UK.