Taking Nujiang prefecture as the research object, a M_S7.0 earthquake was set in the southern section of Nujiang fault. Based on the Newmark model and using basic data such as DEM and geological maps, the Arias intensity seismic motion parameter was selected, and the amplification effect of topography on seismic motion was considered to conduct a potential landslide hazard assessment in Nujiang prefecture, obtaining the spatial distribution pattern of potential seismic landslides in the study area. The results show that the areas with high sensitivity to potential seismic landslides in Nujiang prefecture are mainly distributed along the steep slopes on both sides of the Dulong river, Nujiang river, and Lancang river. The areas with low sensitivity are located in the gently undulating intermountain basins. The probability range of landslide instability is 0-11.69%. In the seismic landslide hazard zoning, the areas of extremely low hazard zone, low hazard zone, moderate hazard zone, and high hazard zone account for 78.11%, 12.23%, 5.69%, and 3.39% of the study area, respectively. The moderate and high hazard zones are mainly distributed in the steep slope areas on both sides of the Nujiang fault. In the study area, 23 natural villages and several highways as disaster-bearing bodies are located in the high hazard zone. This research can provide effective reference for seismic landslide emergency assessment, potential seismic landslide hazard prediction, and site selection for engineering construction in Nujiang prefecture.

Nujiang prefecture  /  Nujiang fault  /  Newmark model  /  seismic landslide