Analysing post-earthquake landslide activity using multi-temporal landslide inventories near the epicentral area of the 2008 Wenchuan earthquake

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...

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Bibliographic Details
Published inNatural hazards and earth system sciences Vol. 16; no. 12; pp. 2641 - 2655
Main Authors Tang, Chenxiao, Van Westen, Cees J., Tanyas, Hakan, Jetten, Victor G.
Format Journal Article
LanguageEnglish
Published Katlenburg-Lindau Copernicus GmbH 12.12.2016
Copernicus Publications
Subjects
Digital imaging
Digitization
Earthquakes
Extreme weather
Inventories
Landslides
Landslides & mudslides
Mountain regions
Precipitation
Rain
Rainfall
Remote sensing
Seismic activity
Stereoscopy
Studies
Vegetation
China
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Summary: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.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1684-9981
1561-8633
1684-9981
DOI:10.5194/nhess-16-2641-2016