Construction of Time-series Displacement Data of Yongdam Dam Based on PSInSAR Analysis of Satellite C-band SAR Images

The increase in water-related disasters due to climate change has a significant impact on the stability of water resource facilities. The displacement of a water resource facility is one of the important indicators to evaluate the stability of the facility. In this study, the time-series displacemen...

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Bibliographic Details
Published in:Geo Data 2023-09, Vol.5 (3), p.147-154
Main Authors: Kim, Taewook, Shin, Hyunjin, Jung, Jungkyo, Han, Hyangsun, Kang, Ki-mook, Hwang, Euiho
Format: Article
Language:English
Subjects:
displacement
psinsar
sar
water resources satellite
yongdam dam
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Summary:The increase in water-related disasters due to climate change has a significant impact on the stability of water resource facilities. The displacement of a water resource facility is one of the important indicators to evaluate the stability of the facility. In this study, the time-series displacement of the Yongdam Dam was constructed by applying the persistent scatter interferometric synthetic aperture radar (PSInSAR) technique to the Sentinel-1 C-band SAR images. A sufficient number of persistent scatterers were derived to enable local deformation monitoring of the Yongdam Dam, and the dam showed very small displacement velocity except during the heavy rainfall in August 2020. In the future, C-band SAR imagery from the water resources satellite (Next Generation Medium Satellite 5) is expected to provide accurate displacement data for water resource facilities.
ISSN:2713-5004
2713-5004
DOI:10.22761/GD.2023.0024