Landslides Triggered by the 2025 M8.8 Kamchatka Peninsula, Russia Earthquake

We present an inventory of 346 landslides triggered by the July 29, 2025 M8.8 Kamchatka Peninsula, Russia earthquake. Landslides were mapped from 10 meter resolution openly available Sentinel-2 optical images. All landslides were manually identified by comparing pre- (using cloud free images as close to the earthquake date as possible from July 2024 - 2025) and post-earthquake real color and normalized difference vegetation index images. ~33,000 km^2 were assessed at a scale of 1:10k, with landslide polygon delineation performed nominally at a 1:5k scale. Landslides were mapped from 53.6° - 48.7° N and 154° - 160° E on the Kamchatka Peninsula and northern Kuril Islands. Landslides were mapped from images collected between August 4 - 22, 2025, limited by persistent cloud cover and repeat imaging times of the Sentinel-2 satellite. To the extent practicable, landslide complexes were mapped as simplified single-lobe features. Mapped landslides range in area from ~300 - 150000 m^2, with 92% of mapped slides larger than 1000 m^2. This inventory is believed to be nearly complete above a size of 1000 m^2 for large displacement landslides, but may be missing many smaller slides, rockfall on coastal cliffs poorly imaged by these satellite data, or small displacement slumps. Due to mapping resolution, we do not report landslide failure types, but note much of the included dataset are likely shallow disrupted soil and rock slides. This inventory of coseismic landslides provides polygon outlines of the entire landslide feature, area, base image and mapper information, as well as the total height (relief) and estimated runout length of each feature.