Abstract: In order to accurately monitor the activity status of key landslides and prevent potential geological disasters, the article uses the pixel-tracking technology to obtain the movement distribution of the Jinsha River Baige landslide in three consecutive time periods from 2017 to 2018 based on 4 scenes of ALOS-2 data. The results show that there are significant temporal and spatial differences in the movement of the landslide body. The comparison of speeds in different periods shows that the sliding displacement of the landslide has a clear acceleration trend in the early stage of the disaster.

Key words: Baige landslide, pixel-tracking technology, ALOS-2, sliding space-time difference