Abstract:
In the most destructive and catastrophic landslide events, rocks, soil and fluids can travel at speeds approaching several tens of metres per second. However, many landslides, commonly referred to as slow-moving landslides, creep at rates ranging from millimetres to several metres per year and can persist for years to decades. Although slow-moving landslides rarely claim lives, they can cause major damage to infrastructure and sometimes fail catastrophically, transitioning into fast-moving landslides that can result in thousands of casualties. The persistent and long-term motion of slow-moving landslides provides an exceptional opportunity to investigate landslide processes and mechanisms.
In this talk, based on a combination of monitoring techniques using geodetic (both remote sensing and GNSS) and seismic data, I will focus on several recent slow-moving landslide studies that have led to a better understanding of the mechanical processes of landslides under various forcings (precipitation, earthquakes, anthropogenic forcings, deglaciation). I will then discuss the prospects and challenges of remote sensing techniques to detect precursor signals to landslide failures.