1. Engineer, Changjiang River Scientific Research Institute, Changjiang Water Resource Commission, Wuhan 430014, China; and Research Center on Mountain Torrents and Geologic Disaster Prevention, Ministry of Water Resources, Wuhan 430014, China (corresponding author).
2. Senior Engineer, Changjiang River Scientific Research Institute, Changjiang Water Resource Commission, Wuhan 430014, China; and Research Center on Mountain Torrents and Geologic Disaster Prevention, Ministry of Water Resources, Wuhan 430014, China.
3. Professor, Changjiang River Scientific Research Institute, Changjiang Water Resource Commission, Wuhan 430014, China; and Research Center on Mountain Torrents and Geologic Disaster Prevention, Ministry of Water Resources, Wuhan 430014, China.