Journal
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
Volume 16, Issue 12, Pages 2641-2655Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/nhess-16-2641-2016
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Large earthquakes in mountainous regions may trigger thousands of landslides, some active for years. We analysed the changes in landslide activity near the epicentre of the 2008 Wenchuan earthquake by generating five landslide inventories for different years through stereoscopic digital visual image interpretation. From May 2008 to April 2015, 660 new landslides occurred outside the co-seismic landslide areas. In April 2015, the number of active landslides had gone down to 66, less than 1% of the co-seismic landslides, but still much higher than the pre-earthquake levels. We expect that the landslide activity will continue to decay, but may be halted if extreme rainfall events occur.
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