1. PhD Student, Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
2. (IAHR Member), Senior Lecturer, Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
3. (IAHR Member), Associate Professor, Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand.
4. (IAHR Member), Professor, Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Kowloon Bay, Hong Kong.