Remote Sensing | |
Mapping Ground Subsidence Phenomena in Ho Chi Minh City through the Radar Interferometry Technique Using ALOS PALSAR Data | |
Dinh Ho Tong Minh2  Le Van Trung1  Thuy Le Toan3  Salvatore Stramondo4  | |
[1] Ho Chi Minh City University of Technology, 268 Ly Thuong Kiet, Ward 14, District 10, Ho Chi Minh City, | |
关键词: ground subsidence; urbanization; sea level rising; Ho Chi Minh City; multi-temporal InSAR; PS/DS processing; | |
DOI : 10.3390/rs70708543 | |
来源: mdpi | |
【 摘 要 】
The rapidly developing urbanization since the last decade of the 20th century has led to extensive groundwater extraction, resulting in subsidence in Ho Chi Minh City, Vietnam. Recent advances in multi-temporal spaceborne SAR interferometry, especially with a persistent scatters interferometry (PSI) approach, has made this a robust remote sensing technique for measuring large-scale ground subsidence with millimetric accuracy. This work has presented an advanced PSI analysis, to provide an unprecedented spatial extent and continuous temporal coverage of the subsidence in Ho Chi Minh City from 2006 to 2010. The study shows that subsidence is most severe in the Holocene silt loam areas along the Sai Gon River and in the southwest of the city. The groundwater extraction resulting from urbanization and urban growth is mainly responsible for the subsidence. Subsidence in turn leads to more flooding and water nuisance. The correlation between the reference leveling velocity and the estimated PSI result is
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland
【 预 览 】
Files | Size | Format | View |
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RO202003190009785ZK.pdf | 5987KB | download |