Abstract
Based on the QGIS platform, using high-resolution remote sensing images, this work interpreted co-seismic landslides triggered by the 2019 Changning, Sichuan Ms6.0 earthquake. In total, 496 landslides with an occupation area of 1.2km2 were mapped. Then considering three types of influence factors, seismology, topography and geology, the distribution pattern of these landslides was statistically analysed by PyQGIS console and existing analysis functions. The results show that the landslides are mostly distributed at places with elevations of 400-500m, slopes facing N and SE directions, media of mudstone, tuff and siltstone, sites 2-6km distant to the fault, and zones of PGA 0.4-0.5g. This study will contribute to further understanding of the genesis and risk assessment of co-seismic landslides, providing useful information for research of the tectonic activity in the study area.
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