A case study on landslide displacement monitoring by SBAS DInSAR in the Vipava River Valley,Slovenia

摘要

The Vipava River Valley is well known as a landslide-prone area in Slovenia.Since the area is very large,the application of in situ monitoring systems is limited.An efficient method that can monitor the whole area of the Vipava River Valley is highly required.In this study,the SBAS DInSAR method is applied to monitor the displacement behavior of landslides in this area.Using four images of ALOS2-PALSAR2 data,captured from March 2016 to December 2018,clear LOS displacement distribution maps are obtained.The temporal transition of the displacement behavior is also obtained using 273 images of Sentinel-1A/B for both ascending and descending passes taken from September 2016 to January 2019.The monitoring results for the Slano blato landslide are demonstrated in this paper.LOS displacements of several cm are detected despite the countermeasure works that were performed.The SBAS DInSAR gives a better understanding of the spatio-temporal landslide displacements in the area.