Science Service System

Summary of Proposal LAN2844

TitleTwo-dimensionalground deformation monitoring and measurement base on a modified SBAS InSARmethod in Southern Jiangsu, China
Investigator Dong, Shaochun - Nanjing University, School of Earth Sciences and Engineering
Team Member
Dr. Samsonov, Sergey - Canada Centre for Mapping and Earth Observation, Natural Resources Canada
Professor Ye, Shujun - Nanjing University, School of Earth Sciences and Engineering
Mr. Zhu, Meng - Nanjing University, School of Earth Sciences and Engineering
Ms. Liu, Yadan - Nanjing University, School of Earth Sciences and Engineering
SummaryGround deformation would lead to damages ofurban infrastructure including buildings, railways, highways, subways andunderground facilities (water supply, pipes, gas, electricity installations,etc.). In China, seventeen provinces have reported ground deformation, mainlypresented as land subsidence, ground fissures and hidden deformation. Thus the grounddeformation has become the most prominent social and environment problem inChina. Excessive groundwater withdrawal is thought to be the primary cause ofthe ground deformation in metropolitan cities, but the fast urbanization andeconomic development, mass construction of skyscrapers, metro lines andhighways are also contributing factors. The mapping of ground deformation andanalysis of its driving forces are critically needed for the early hazardwarning and sustainable development so that effective controlling measurescould be taken. Therefore the objective of this proposal is to detect verticaland horizontal ground deformation, especially along line urban infrastructures(like metro lines, elevated roads, high ways and railways) and point ones (likemass skyscrapers and transportation hubs) in Southern Jiangsu, China. Spatial-temporalevolution and time-series of two-dimensional deformation in the research area wouldbe derived in this proposal. A modified SBAS InSAR method to derivetwo-dimensional ground deformation with combination of multi-sensor SAR datasetsbased on traditional SBAS InSAR method would be developed in this proposal. EnvisatASAR data, ERS 1/2 data, ALOS PALSAR data and high resolution TerraSAR-X dataacquired in ascending and descending modes will be used. The potential abilityand accuracy of TerraSAR-X data in detecting subtle deformation in twodimensions (vertical and horizontal) would be assessed. Test results will bedelivered during and after the project execution. This proposal is jointly sponsored by Ministryof Land and Resources of the People’s Republic of China (MLR).

Back to list of proposals

© DLR 2004-2016