Hong Kong is susceptible to landslide risks due to the high mountain slope and frequent rainy weather. Landslide poses a huge threat to infrastructure and residential areas nearby, and even leads to irreparable loss of the civilian lives and properties. It is therefore urgent to explore advanced technologies to study the mechanisms of landslide dynamics for risk mitigation. In this paper, we use the satellite synthetic aperture radar interferometry (InSAR) method to trace the slow movement before and after Hong Kong Lantau Island landslide in June 2008. A comparison analysis between precipitation and slope movement suggests that rainfall has a significant impact on the slope failure in the research area.
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