BGS Debris Flow Susceptibility Model GB (version 6.1)

The BGS Debris Flow Susceptibility Model for Great Britain v6.1 is a 1:50 000 scale raster dataset of Great Britain providing 50 m ground resolution information on the potential of the ground, at a given location, to form a debris flow. It is based on a combination of geological, hydrogeological and geomorphological data inputs and is primarily concerned with potential ground stability related to natural (rather than man-made) geological conditions and slopes. The dataset is designed for those interested specifically in debris flow susceptibility at a regional or national planning scale such as those involved in construction or maintenance of infrastructure networks (road or rail or utilities), or other asset managers such as for property (including developers and home owners), loss adjusters, surveyors or local government. The dataset builds on research BGS has conducted over the past 15 years investigating debris flows. The model was designed to identify potential source-areas for debris flows rather than locate where material may be deposited following a long-run-out failure i.e. the track and flow of debris. This work focuses on natural geological and geomorphological controls that are likely to influence the initiation of debris flows. It therefore, does not consider the influence of land use or land cover factors.英国地质调查局（British Geological Survey，BGS）大不列颠地区泥石流易发性模型v6.1是一套比例尺为1:50000的栅格数据集，空间分辨率为50米，用于表征大不列颠地区任意给定地点的地面形成泥石流的潜在可能性。该数据集融合地质、水文地质与地貌学数据作为输入，核心聚焦于与自然（而非人工）地质条件及边坡相关的潜在地面稳定性问题。本数据集专为关注区域或国家级规划尺度下泥石流易发性的群体打造，服务对象涵盖基础设施网络（道路、铁路或公用设施）的建设与运维人员，以及不动产领域从业者（含开发商与房主）、定损员、测量师或地方政府部门等其他资产管理者。本数据集基于BGS过去15年间针对泥石流开展的研究成果构建而成。该模型旨在识别泥石流的潜在物源区，而非定位长程运移失效后碎屑物质的沉积位置，即泥石流的运动路径与流动区域。本研究聚焦于可能影响泥石流启动的自然地质与地貌控制因素，因此未考虑土地利用或土地覆被因子的影响。