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EARTHQUAKE-TRIGGERED LANDSLIDES (2012)

Eight recent worldwide earthquakes were studied and integrated into the investigation of earthquakes and the distribution of triggered landslides. In order to achieve this, comparisons were made with previously defined relationships between earthquake characteristics and landslide distribution. Although the recent events generally show similar landslides distribution to prior events, more detailed mapping showed asymmetrical distribution, indicating the influence of fault geometry and rupture directivity on landslide distribution. In addition, other factors including rock mass integrity and focal depth were investigated to understand their influence on seismic slope response. Although earthquake magnitude is the dominant controlling factor, focal depth and rock mass fracture density also influence the area affected by earthquaketriggered landslides was investigated, there appeared to be a steep positive relationship between rock mass fracture density and affected area by earthquake-triggered landslide.
Reference:
1 st Civil and Environmental Engineering Student Conference 25-26 June 2012 Imperial College London
Organization:
Civil Engineering Department, Imperial College, London, U.K.
UK
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