A magnitude 7.8 earthquake struck Nepal on April 25, 2015. An earthquake-induced landslide inventory is under development by using multi-temporal images and mapping as polygons. The most abundant landslide types are: debris flows, shallow translational slides, and rockfalls. We compared the size frequency distribution of the inventory with those of other eight earthquake-induced landslide inventories, to study the relationship between the earthquake magnitude and the landslide size. We found that the proportion between small and large landslides is similar to the other earthquakes. Then, we studied how the landslide frequency density changes as a function of topographic parameters and the lithologies of the affected area. We observed that the mean slope gradient for earthquake-induced landslides is higher than expected and change with the slope aspect.

Valagussa, A., Frattini, P., Crosta, G., Valbuzzi, E. (2016). Pre and post 2015 Nepal earthquake landslide inventories. In Landslides and Engineered Slopes. Experience, Theory and Practice: Proceedings of the 12th International Symposium on Landslides (pp.1957-1964). Taylor and Francis Inc. [10.1201/b21520-245].

Pre and post 2015 Nepal earthquake landslide inventories

Valagussa, A
Primo
;
Frattini, P
Secondo
;
Crosta, G
Penultimo
;
Valbuzzi, E
Ultimo
2016

Abstract

A magnitude 7.8 earthquake struck Nepal on April 25, 2015. An earthquake-induced landslide inventory is under development by using multi-temporal images and mapping as polygons. The most abundant landslide types are: debris flows, shallow translational slides, and rockfalls. We compared the size frequency distribution of the inventory with those of other eight earthquake-induced landslide inventories, to study the relationship between the earthquake magnitude and the landslide size. We found that the proportion between small and large landslides is similar to the other earthquakes. Then, we studied how the landslide frequency density changes as a function of topographic parameters and the lithologies of the affected area. We observed that the mean slope gradient for earthquake-induced landslides is higher than expected and change with the slope aspect.
poster + paper
2015 Nepal Earthquake; landslide inventory;
English
12th International Symposium on Landslides, 2016
2016
Landslides and Engineered Slopes. Experience, Theory and Practice: Proceedings of the 12th International Symposium on Landslides
9781138029880
2016
3
3
1957
1964
none
Valagussa, A., Frattini, P., Crosta, G., Valbuzzi, E. (2016). Pre and post 2015 Nepal earthquake landslide inventories. In Landslides and Engineered Slopes. Experience, Theory and Practice: Proceedings of the 12th International Symposium on Landslides (pp.1957-1964). Taylor and Francis Inc. [10.1201/b21520-245].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/215235
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