1. State Key Laboratory of Geo-Hazard Prevention and GeoEnvironment Protection, Chengdu University of Technology, Chengdu, P. R. China.
2. Ecole Centrale de Nantes, Nantes, France.
3. Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Faculty of Science, Charles University, Prague, Czech Republic.
4. Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands.
5. Disaster Prevention Research Institute, Kyoto University, Kyoto, Japan.
6. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing, P. R. China; Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing, P. R. China.