Science Service System

Summary of Proposal LAN0208

TitleTerrSAR-X Interferometry on Active Faults in Western China
Investigator Zhang, Jingfa - Institute of Crustal Dynamics, China Earthquake Administration, N/A
Team Members
professor Muller, Jan-Peter - University College of London, Department of Geomatic Engineering
Professor Rocca, Fabio - Politecnico di Milano, Elettronica e Informazione
Professor Zeng, Qiming - Peking University, Institute of Remote Sensing and GIS
Professor Cui, Jianwen - Yunnan Earthquake Bureau, N/A
SummaryThis proposal plans to measure the Honghe and Xianshuihe active fault movements in both large and small scope. ENVISAT and ALOS acquisitions are proposed to monitor the most Honghe fault and the Xianshuihe active fault. TerrSAR will be used to monitor a much smaller urbanized area nearby the fault, Dali city and Kangding city. ALOS and TerrSAR will be launched in 2006. The L-band ALOS SAR and X-band TerrSAR will show new scattering properties different with ENVISAT. Both missions bring a lot of perspectives to InSAR. For example, the 3-meter resolution and 11-day visiting period of TerrSAR can provide more possible InSAR pairs with better accuracy. And the high range bandwidth will allow large baselines and the option for highly precise DEM generation. On the other hand, L-band is much more tolerance with decorrelation due to vegetation and atmosphere. The combination use of L-band, C-band and X-band in different scope is promising to monitor the test fault roundly. PS method is proposed to remove atmospheric artifacts, local topography errors and other noise. Corner reflectors designed for both X-band and L-band will be set up along the Honghe Fault and Xianshuihe fault. They can act as GCPs in both locating and deformation monitoring. An auto-seeking model to identify both artificial and natural PSs will be developed. Results from GPS, conventional InSAR and PS method will be compared. Chinese and European scientists cooperate to carry out this experiment, to measure accurately slow deformation of active fault, to estimate how the fault impact on nearby cities, and to study how an earthquake gestate and form. Any development of this experiment is promising to improve the earthquake research in China. ICD, CEA and Yunnan Earthquake Bureau will fund the project.

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