Dept of Earth & Environmental Sciences
Centre for Environmental and Information Technology (EIT)
200 University Ave. W
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567
Working with researchers from Chengdu University of Technology and the State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (SKLGP), Professor Stephen Evans of the Department of Earth and Environmental Sciences is studying catastrophic landslides in China.
In October, he carried out field work in the Loess Plateau of Gansu and Ningxia Provinces, captured in these dramatic photographs.
In addition to soil erosion, loess is particularly susceptible to seismic shaking and its structure collapses during strong earthquakes. In 1920, the region was struck by a powerful earthquake which triggered thousands of loess landslides, many of which dammed rivers to form landslide-dammed lakes. It is estimated that some 235,000 people were killed in the earthquake as a result of the combined effect of building collapse and co-seismic loess landslides.
Evans is the Director of Geological Engineering at the University of Waterloo. He specializes in the behaviour and risk assessment of natural hazards, including landslides, landslide dams, glacial hazards, and tsunamis.