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Using advanced InSAR time series techniques to monitor landslide movements in Badong of the Three Gorges region, China

Liu, P., Li, Z., Hoey, T., Kincal, C., Zhang, J., and Muller, J-P. (2013) Using advanced InSAR time series techniques to monitor landslide movements in Badong of the Three Gorges region, China. International Journal of Applied Earth Observation and Geoinformation, 21 . pp. 253-264. ISSN 0303-2434 (doi:10.1016/j.jag.2011.10.010)

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Abstract

The Three Gorges occupy 193 km of the middle reaches of the Yangtze River between Fengjie in Chongqing and Yichang in Hubei Province, China. Due to steep valley-side slopes and long-term river incision, landslides are a major hazard in the Three Gorges region. In this study, we employ the SBAS InSAR technique to process Envisat SAR images collected between 2003 and 2010. Our time series results enable identification of two distinct landslides with deformation rates of up to 10–15 mm/yr in Badong County, and field evidence is used to verify the positions of these failures. With both descending and ascending observations, two-dimensional velocity fields in north and up directions are recovered to better understand the landslide movements. Obvious correlation between seasonal landslide movements and water level changes is observed, which not only provides strong support of our InSAR time series results, but also indicates the impacts of water level changes to landslide activities.

Item Type:Article
Keywords:InSAR, time series, landslide, Huangtupo
Status:Published
Refereed:Yes
Glasgow Author(s):Hoey, Prof Trevor and Kincal, Dr Cem and Li, Dr Zhenhong
Authors: Liu, P., Li, Z., Hoey, T., Kincal, C., Zhang, J., and Muller, J-P.
Subjects:Q Science > Q Science (General)
Q Science > QE Geology
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:International Journal of Applied Earth Observation and Geoinformation
ISSN:0303-2434
ISSN (Online):1872-826X

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
513031GAS: Generic Atmosphere Solutions for radar measurementsZhenhong LiNatural Environment Research Council (NERC)NE/H001085/1SCHOOL OF GEOGRAPHICAL & EARTH SCIENCES