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Recent land deformation detected by Sentinel-1A InSAR data (2016–2020) over Hanoi, Vietnam, and the relationship with groundwater level change by Luyen K. Bui; Phong V. V. Le; Phuong D. Dao; Nguyen Quoc Long; Hai V. Pham; Hong Ha Tran; Lei Xie is a Environmental Science article available to read on EtoBox.
What is Recent land deformation detected by Sentinel-1A InSAR data (2016–2020) over Hanoi, Vietnam, and the relationship with groundwater level change about?
Interferometric synthetic aperture radar (InSAR), one of the most commonly used remote sensing methods for observing and monitoring land subsidence, has been applied in Hanoi, Vietnam in several studies with results showing deformation up to 2014. However, freely accessible Sentinel-1 InSAR data have not been investigated thoroughly to date. Here, we investigate the most recent land surface deformation in Hanoi for the period 2016 À 2020 using Sentinel-1A SAR data. The analysis is conducted on 114 SAR scenes with both the Persistent Scatterer InSAR (PSInSAR) and Small BAseline Subset (SBAS) methods. The GPS-based deformation time series are used to verify InSAR results and borehole groundwater level measurements are employed to evaluate the relationship between groundwater depletion and surface subsidence. The results show that observed deformation from SBAS and PSInSAR is consistent in both spatial patterns and statistics, in which two high-rate subsiding bowls were detected in Dan Phuong/Hoai Duc and Ha Dong/Thanh Tri districts with the mean subsiding rates of ∼5 mm per year. GPS and InSAR deformation generally agree well except for the comparison at the JNAV station after 2017,
Who reads Recent land deformation detected by Sentinel-1A InSAR data (2016–2020) over Hanoi, Vietnam, and the relationship with groundwater level change?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Luyen K. Bui; Phong V. V. Le; Phuong D. Dao; Nguyen Quoc Long; Hai V. Pham; Hong Ha Tran; Lei Xie
- Publisher
- Informa UK Limited
- Published
- 2021
- Language
- EN
- Field
- Environmental Science (Physical Sciences)