Land Subsidence Monitoring of Nanjing Area Based on PS-InSAR and SBAS Technology
Abstract Due to potential hazards, effective monitoring of land subsidence for urban areas has for a long time been very important. In this study, based on 23 images acquired from Sentinel-1A satellite, the PS-InSAR and SBAS technology as cross validation are used to examine land subsidence of the Nanjing area. The monitoring results indicate that both the range and magnitude of the land subsidence area from PS-InSAR technology agree well with SBAS technology. Moreover, significant land subsidence of the Nanjing area has been detected between April 2015 and January 2017, with the maximum subsidence rate exceeding -30mm/a.
Key words :
land subsidence
Sentinel-1A
PS-InSAR
SBAS
Cite this article:
GAO Ertao,FAN Donglin,FU Bolin et al. Land Subsidence Monitoring of Nanjing Area Based on PS-InSAR and SBAS Technology[J]. jgg, 2019, 39(2): 158-163.
GAO Ertao,FAN Donglin,FU Bolin et al. Land Subsidence Monitoring of Nanjing Area Based on PS-InSAR and SBAS Technology[J]. jgg, 2019, 39(2): 158-163.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2019/V39/I2/158
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