Investigating the Absolute Velocity Estimation of an Active and Fast-Moving Landslide Using Integrated Satellite-Based Techniques: The Case Study of Pissouri Village in Cyprus

Over a decade, Pissouri village has suffering from an active and fast-moving landslide causing severe damages in many properties and the broader landscape. This study presents an investigation to estimate the absolute velocity of the landslide using integrated satellite-based techniques, utilizing the only strategic infrastructure unit for monitoring geohazards in Cyprus, named CyCLOPS. A dataset of 37 Sentinel-1 acquisitions in ascending mode, covering an interval time from July 2021 to November 2023 were processed in GAMMA software. The GNSS monitoring of Pissouri was performed using the cutting-edge equipment of CyCLOPS, showing significant local displacements. In cases of an active and fast-moving landslide, the integration of both Synthetic Aperture Radar (SAR) and Global Navigation Satellite System (GNSS) data is essential to monitor, estimate and understand the absolute velocity of the landslide.