Ledoksari Landslide

Karanganyar and the surrounding area are situated in a dynamic volcanic arc region, where landslide frequently occurs during the rainy season. Indeed, the rain-induced landslide disasters have been resulting in 65 fatalities and a substantial socio-economical loss in last December 2007. Again, in early February 2009, 6 more people died, hundreds of people temporary evacuated and tens of houses damaged due to the rain-induced landslide. It was found that weathered andesitic-steep slope (steeper than 30o) was identified as the highest susceptible slope for rapid landslide, whilst the gentle colluvial slope with inter-stratification of tuffaceous clay-silt was found to be the susceptible slope for creeping. Finally, a programme for landslide risk reduction and control were developed with special emphasize on community-based landslide prevention and early warning system. It should be highlighted that the social approach needs to be properly addressed in order to guarantee the effectiveness of landslide risk reduction. Source: Karnawati, D., Fathani, T.F., Ignatius, S. et al. J. Mt. Sci. (2011) 8: 149. doi:10.1007/s11629-011-2107-6