Journal of Mountain Science

, Volume 13, Issue 11, pp 1941–1957 | Cite as

Landslide susceptibility assessment of the region affected by the 25 April 2015 Gorkha earthquake of Nepal

  • Amar Deep RegmiEmail author
  • Megh Raj Dhital
  • Jian-qiang Zhang
  • Li-jun Su
  • Xiao-qing Chen


Nepal was hit by a 7.8 magnitude earthquake on 25th April, 2015. The main shock and many large aftershocks generated a large number of coseismic landslips in central Nepal. We have developed a landslide susceptibility map of the affected region based on the coseismic landslides collected from remotely sensed data and fieldwork, using bivariate statistical model with different landslide causative factors. From the investigation, it is observed that most of the coseismic landslides are independent of previous landslides. Out of 3,716 mapped landslides, we used 80% of them to develop a susceptibility map and the remaining 20% were taken for validating the model. A total of 11 different landslide-influencing parameters were considered. These include slope gradient, slope aspect, plan curvature, elevation, relative relief, Peak Ground Acceleration (PGA), distance from epicenters of the mainshock and major aftershocks, lithology, distance of the landslide from the fault, fold, and drainage line. The success rate of 87.66% and the prediction rate of 86.87% indicate that the model is in good agreement between the developed susceptibility map and the existing landslides data. PGA, lithology, slope angle and elevation have played a major role in triggering the coseismic mass movements. This susceptibility map can be used for relocating the people in the affected regions as well as for future land development.


Earthquake Himalaya Coseismic landslide Susceptibility bivariate statistical model Nepal 



Himalayan Frontal Thrust


Main Boundary Thrust


Main Central Thrust


South Tibetan Detachment


Great Midland Antiform


Peak Ground Acceleration


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Supplementary material

11629_2015_3688_MOESM1_ESM.pdf (99 kb)
Frequency ratios of the classes of co-seismic landslide inducing parameters


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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Amar Deep Regmi
    • 1
    Email author
  • Megh Raj Dhital
    • 2
  • Jian-qiang Zhang
    • 1
  • Li-jun Su
    • 1
  • Xiao-qing Chen
    • 1
  1. 1.Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and EnvironmentCASChengduChina
  2. 2.Central Department of GeologyTribhuvan UniversityKirtipurNepal

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