1. Department of Earth Sciences, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
2. Department of Civil Engineering, University of New Brunswick, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada
3. Canadian Rivers Institute, P.O. Box 4400, Fredericton, NB E3B 5A3, Canada