国会研究服务部：2024年滑坡：联邦在研究、评估和应对中的作用报告（英文版）

Landslide hazards may occur across the United States and its territories, and landslide risks may be increasing. A landslide is a movement of a mass of rock, debris, or soil down a slope. Mountainous, hilly, or cliff terrains (e.g., vertical shorelines, roadcuts, surface mining walls) are most susceptible to landslides. Landslides are most often triggered by rainfall, particularly rainfall on burned, steeply sloped terrain (e.g., a post-wildfire debris flow). Earthquakes or volcanic activ