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Spatial Distribution of Seismic Landslides and Their Erosion Thickness in Subduction Zone Associated with Shear-Theust Earthquake Faulting Mode
详细信息   
摘要

    

Many landslides were triggered by Haiti Earthquake (Mw 7.0) of January 12, 2010. Based on Geographic Information Systems (GIS) and remote sensing technologies, three detailed landslide inventories were constructed. The three inventories are respectively landslide polygons, landside centroid points, and landslide top points. Statistical results of landslide and their erosion thickness with distance along the Enriquillo-Plantain Garden fault show that areas from 22 to 26 km and 8 to 12 km, western of the epicenter, and from 6 to 18 km, eastern of the epicenter are landslide high susceptibility areas. It also represents more slope curvature close to zero, more difficult to earthquake triggered landslide occurrence. The highest values appear at range from 200 m to 1 200 m in elevation. The landslides have preferred orientation dominated by the eastern. No apparent correlations were found in the LCND, LTND, LAP and LET values with distance from epicenter and distance from roads.

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