hide
Free keywords:
-
Abstract:
This study examines the land subsidence issue in Joshimath, a small hilly village in Uttarakhand, India. With the growing demand for infrastructure and services to accommodate the influx of tourists in the region, Joshimath has seen significant urbanization, leading to severe land subsidence. More than 900 houses in the region and roads have developed cracks, and the government has ordered the immediate evacuation of families in the area.To better understand and mitigate the risk of landslides in this area, this study implemented a remote sensing technique called Interferometric Synthetic Aperture Radar (InSAR) to monitor land subsidence in Joshimath over a period of 20 months (May 2021 - Jan 2023). The study collected radar data from Sentinel-1 and performed PSInSAR analysis. The preliminary analysis revealed continuous deformation of the order of 4cm/year in the region. Specific locations were selected for further detailed analysis, and field work is being carried out to provide additional information such as the effects of subsidence and vulnerability of the area. This information can be used to develop a comprehensive understanding of the subsidence problem in Joshimath, which is critical for developing effective mitigation strategies.
