Journal
GEOCARTO INTERNATIONAL
Volume 37, Issue 5, Pages 1514-1528Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10106049.2020.1778101
Keywords
PS-InSAR; Sentinel-1; landslide monitoring; remote sensing; Idukki landslide
Ask authors/readers for more resources
This research analyses the terrain displacements in the Idukki district of Kerala, India, in the year leading up to a deadly disaster in August 2018. The analysis indicates the instability of the terrain, and attributes the landslides in August 2018 to heavy rainfall and increased pore water.
The monitoring of pre-failure movements and their evolution over time is necessary to assess the predisposing and triggering factors. This research focusses on assessing terrain displacements in the Idukki district (Kerala, India) over a year before the deadly disaster, which occurred in August 2018; this disaster was claimed to be a dreadful one as it took off hundreds of human lives and properties. The post-event Persistent Scatterers interferometric analysis on a stack of 20 Sentinel-1 images was performed to analyse the precursory deformations of the landslides. From the results obtained, the study region is estimated to have undergone a displacement of -26 to +19 mm/year, which indicates the instability of the terrain. Also it is evident that the occurrence of the landslides in August 2018, has been due to the effect of the torrential rainfall and the increase in the pore water inducing instability, thereby causing displacement in the region.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available