1. China Institute of Water Resources and Hydropower Research, Beijing 100038, China
2. State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
3. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
4. School of Hydraulic and Electric Engineering, Qinghai University, Xining 810016, China
5. Department of Civil and Structural Engineering, University of Sheffield, Sheffield S1 3JD, UK
6. PetroChina Research Institute of Petroleum Exploration & Development (RIPED), Beijing 100083, China