1. Associate Professor, Dept. of Civil Engineering, Univ. of Nebraska–Lincoln, Omaha, NE 68182 (corresponding author).
2. Ph.D. Student, Dept. of Civil Engineering, Univ. of Nebraska–Lincoln, Omaha, NE 68182.
3. Associate Professor, State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin Univ., Tianjin 300072, China.
4. Professor, State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan Univ., Chengdu 610065, China.