Global Landslide Hazard Distribution

The Global Landslide Hazard Distribution is a 2.5 minute grid of global landslide and snow avalanche hazards based upon work of the Norwegian Geotechnical Institute (NGI). The hazards mapping of NGI incorporates a range of data including slope, soil, soil moisture conditions, precipitation, seismicity, and temperature. Shuttle Radar Topography Mission (SRTM) elevation data at 30 seconds resolution are also incorporated. Hazards values less than or equal to 4 are considered negligible and only values 5 through 9 are utilized in further analyses. To ensure compatibility with other data sets, value 1 is added to each of the values to provide a hazard ranking ranging 6 through 10 in increasing hazard. This data set is the result of collaboration among the Columbia University Center for Hazards and Risk Research (CHRR), Norwegian Geotechnical Institute (NGI), and Columbia University Center for International Earth Science and Information Network (CIESIN).

全球滑坡及雪崩灾害分布数据集系基于挪威岩土工程研究所（NGI）的研究成果，构建了一个2.5分钟分辨率的全球滑坡与雪崩灾害分布图。挪威岩土工程研究所的灾害制图工作融合了多种数据，包括坡度、土壤、土壤湿度状况、降水量、地震活动和气温等。此外，还纳入了美国国家航空航天局（NASA）的航天雷达地形任务（SRTM）提供的30秒分辨率的地面高程数据。灾害值小于或等于4被认为可忽略不计，仅利用5至9的数值进行进一步分析。为确保与其他数据集的兼容性，每个数值均加1，从而形成一个6至10的灾害等级排名，数值越高，灾害风险越大。该数据集是哥伦比亚大学灾害与风险评估研究中心（CHRR）、挪威岩土工程研究所（NGI）和哥伦比亚大学国际地球科学信息网络中心（CIESIN）合作的结果。