Coseismic landslide runout and mobility ratio data from publicly available mapped landslide inventories

Earthquake-triggered landslides can significantly contribute to human and economic losses during and immediately following earthquakes, but data on the runout behavior of such ground failures is limited. Hazard assessment of coseismic landslide risk can vary dramatically depending on landslide mobility and runout extent, which makes modeling of such behavior imperative. Predictive and empirical models require comprehensive datasets with diverse climatic, topographic, and geologic factors. We present an openly accessible global dataset of coseismic landslide runout lengths, produced from an automated method for estimating runout length from existing landslide inventories. This tool was developed and validated using manually measured runout lengths of 1,726 landslides from five global earthquake-induced landslide inventories spanning a variety of terrains and geologic settings. The resultant database contains 73,665 measured and estimated runout lengths of coseismic landslides from 23 global earthquakes derived from the USGS’s open repository of earthquake-triggered ground-failure inventories on ScienceBase (https://doi.org/10.5066/F7H70DB4, v4.0, Schmitt et al., 2022). We present separate data files for each inventory, reporting area and predicted or measured runout lengths of individual landslides.