Ground Subsidence Monitoring In Vietnam By Multi-Temporal Insar Technique

The rapidly developing urbanization since the last decade of the 20th century leads to the strong groundwater extraction, resulting in the subsidence phenomena in the Ha Noi and Ho Chi Minh City, Vietnam. Recent advances in the multi-temporal spaceborne SAR interferometry, especially with Persistent Scatters Interferometry (PSI) approach, is the robust remote sensing technique for measuring ground subsidence in large scale with millimetric accuracy. This work has presented an advance PSI analysis, to provide unprecedented spatial extent and continuous temporal coverage of the subsidence in Ha Noi and Ho Chi Minh City.