Seismic Monitoring of the Geohazard Chain Following the Matai'an Landslide and Subsequent Landslide Dam Breach

The 2025 Matai’an landslide in eastern Taiwan represents the largest landslide event ever recorded in the region and initiated a cascading hazard sequence involving landslide-dam formation and repeated dam-breach floods. In this talk, I will demonstrate how seismic observations and remote sensing can be integrated to track landslide processes from pre-failure deformation to post-failure hazard evolution. I will also present a seismic-based monitoring framework capable of detecting landslides in near real time, estimating their size, and identifying landslide-dam formation, providing a practical approach for early warning of downstream flood hazards.