Debris flow hazards refer to the sudden movements of a mixture of water, sediment, and debris down a slope or channel, often triggered by heavy rainfall or rapid snowmelt. These hazardous events can cause significant damage to infrastructure, homes, and natural environments, as well as pose risks to human life. Researchers in this area study the causes, mechanisms, and impacts of debris flows in order to better understand and mitigate their potential hazards. This research often involves field observations, laboratory experiments, and numerical modeling to assess the potential risk and develop strategies for early warning systems, land-use planning, and disaster management.