Data and model files for the Shiyang landslide–river blockage–landslide reactivation disaster chain

This dataset supports the manuscript “How is a landslide–river blockage–landslide reactivation disaster chain triggered and amplified: Insights from water–soil–structure interplay in fluvial sand interbeds on the Chinese Loess Plateau,” submitted to Journal of Geophysical Research: Earth Surface. The dataset contains pre- and post-event UAV-derived DEMs, interpreted landslide boundaries, and Massflow model input, output, executable/runtime, and source-code files used to reconstruct and simulate the 10 August 2023 Shiyang landslide–river blockage–landslide reactivation disaster chain in the Beiluo River basin, Chinese Loess Plateau.