Detailed information about landslide occurrence is the foundation for advancing process understanding, susceptibility mapping, and risk reduction. Despite the recent revolution in digital elevation data and remote sensing technologies, landslide mapping remains resource intensive. Consequently, a modern, comprehensive map of landslide occurrence across the United States (USA) has not been compiled. As a first step toward this goal, we present a national-scale compilation of existing, publicly available landslide inventories. This geodatabase can be downloaded in its entirety or viewed through an online, searchable map, with parsimonious attributes and direct links to the contributing sources with additional details. The mapped spatial pattern and concentration of landslides are consistent with prior characterization of susceptibility within the conterminous USA, with some notable exceptions on the West Coast. Although the database is evolving and known to be incomplete in many regions, it confirms that landslides do occur across the country, thus highlighting the importance of our national-scale assessment. The map illustrates regions where high-quality mapping has occurred and, in contrast, where additional resources could improve confidence in landslide characterization. For example, borders between states and other jurisdictions are quite apparent, indicating the variation in approaches to data collection by different agencies and disparity between the resources dedicated to landslide characterization. Further investigations are needed to better assess susceptibility and to determine whether regions with high relief and steep topography, but without mapped landslides, require further landslide inventory mapping. Overall, this map provides a new resource for accessing information about known landslides across the USA.

中文翻译：

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美国各地的滑坡：发生、易感性和数据限制

有关滑坡发生的详细信息是推进过程理解、敏感性绘图和降低风险的基础。尽管最近数字高程数据和遥感技术发生了革命，但滑坡测绘仍然是资源密集型的。因此，尚未编制美国（美国）滑坡发生的现代综合地图。作为实现这一目标的第一步，我们提供了现有的、公开可用的滑坡清单的全国范围汇编。该地理数据库可以完整下载，也可以通过在线可搜索地图进行查看，该地图具有简洁的属性和指向提供额外详细信息的来源的直接链接。绘制的空间格局和滑坡集中度与美国本土的先前敏感性特征一致，但西海岸有一些明显的例外。尽管该数据库在不断发展并且在许多地区都不完整，但它证实了全国各地确实发生了滑坡，从而突出了我们国家级评估的重要性。该地图说明了进行高质量绘图的区域，相比之下，额外的资源可以提高对滑坡表征的信心。例如，州和其他司法管辖区之间的边界非常明显，表明不同机构收集数据的方法存在差异，以及专用于滑坡表征的资源之间存在差异。需要进一步调查以更好地评估敏感性并确定具有高地势和陡峭地形但没有绘制滑坡地图的地区是否需要进一步绘制滑坡清单。总体而言，该地图提供了一种新资源，可用于访问有关美国各地已知滑坡的信息。