Undulations of shear surfaces control strength of fault gouge and may aid catastrophic landslide motion
William H Schulz, USGS Geologic Hazards Science Center, Golden, United States, Gonghui Wang, Disaster Prevention Research Institute, Kyoto University, Gokasho, Uji, Japan, Yao Jiang, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Key Laboratory of Mountain Hazards and Earth Surface Process, Chengdu, China, Brian D Collins, USGS Landslide Hazards Program, Moffett Field, United States and Mark E Reid, USGS, Volcano Science Center, Moffett Field, United States