# Estimation of the probability density of landslide volume data

The folder contains a script for the R free software environment for statistical computing (http://www.r-project.org/) to determine the probability density of landslide volume data, using kernel density estimation (KDE). The folder also contains two demonstrative data sets, and a file with illustrative results. The script was prepared by Maria Teresa Brunetti (MariaTeresa.Brunetti@irpi.cnr.it).

- The R script
- Self-explanatory R script to investigate the statistics of landslide volumes. See: Brunetti M.T., Guzzetti F. & Rossi, M. (2009) Power-law correlations of landslide volumes. "Non Linear Processes in Geophysics", 16, pp. 179-188.
- Data set 1
- First demonstrative data set. Lists the volume (in cubic meters) of 133 rock falls and rock slides triggered by multiple earthquakes in the Umbria-Marche region, central Italy, from September to October 1997. See: Antonini G., Ardizzone F., Cardinali M., Galli M., Guzzetti F. & Reichenbach P. (2002) Surface deposits and landslide inventory map of the area affected by the 1997 Umbria-Marche earthquakes. Bollettino Società Geologica Italiana, Volume Speciale 1, 843-853.
- Data set 2
- Second demonstrative data set. Lists the volume (in cubic meters) of 62 rock falls triggered by the October 14, 1997 earthquake in the Umbria-Marche region, central Italy. See: (a) Antonini G., Ardizzone F., Cardinali M., Galli M., Guzzetti F. & Reichenbach P. (2002) Surface deposits and landslide inventory map of the area affected by the 1997 Umbria-Marche earthquakes. Bollettino Società Geologica Italiana, Volume Speciale 1, 843-853; (b) Guzzetti F., Reichenbach P. & Ghigi S. (2004) Rockfall hazard and risk assessment in the Nera River Valley, Umbria Region, central Italy. Environmental Management 34:2, 191-208.
- Illustrative results
- The pdf file contains a set of illustrative plots, that can be used to test the script using the two demonstration data sets given above.
- The package
- All of the above files, in a single zipped package.
- Probability distributions of landslide volumes
- Brunetti, M.T., Guzzetti F. & Rossi, M. (2009) Probability distributions of landslide volumes. Nonlinear Processes in Geophysics, Vol. 16, 179–188.