1. Key Laboratory for Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China
2. College of Resources and Environment University of Chinese Academy of Sciences Beijing China
3. Sichuan Highway Planning, Survey, Design and Research Institute Chengdu China
4. Faculty of Land Resources Engineering Kunming University of Science and Technology Kunming China
5. Department of Physics, Faculty of Science The University of Hong Kong Hong Kong SAR China