Automated avalanche hazard indication mapping on a statewide scale

An automated approach to avalanche hazard indication mapping has been successfully developed and applied statewide, addressing a significant gap in hazard assessment for the Canton of Grisons, Switzerland. This method combines digital elevation modeling with numerical simulations of avalanche dynamics, accounting for forest protective effects across eight scenarios with varying return periods. Validated against official maps, expert assessments, and satellite-derived cadastres, this innovative technique enables reproducible hazard indication mapping in regions lacking historical records, offering invaluable insights for climate change studies. The approach is now operationally used by authorities and can be replicated globally where high-resolution data are available.

Bühler, Y., Bebi, P., Christen, M., Margreth, S., Stoffel, L., Stoffel, A., Marty, C., Schmucki, G., Caviezel, A., Kühne, R., Wohlwend, S., & Bartelt, P. (2022). Automated avalanche hazard indication mapping on a statewide scale. Natural Hazards and Earth System Sciences, 22(6), 1825–1843. https://doi.org/10.5194/nhess-22-1825-2022