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The core of ecorisQ is made of its members. By joining ecorisQ you will expand your professional network and profit from transparent tools in the field of natural hazard risks. Being an ecorisQ member demonstrates that you are willing to increase the transparancy and reproducibility of natural hazard analyses and that you promote sustainable protection against natural hazards.  

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The version 5.1 of Rockyfor3D is made available today. This new version additionally provides the median, 90th, 95th, 98th and 99th percentile of the simulated energies and passing heights for each cell as raster output. It also saves a NetCDF file called, which can be loaded directly in TrajectoVal3D. This program is developed by Crealp and analyses the frequencies of simulated energies for each cell to automatically propose hazard classes. The methodology is based on Cadanav, which has been developed by Jabeyodoff and Labiouse (2004).

rockfall taiwan

From time to time, extremely instructive films on natural hazard risks appear on the internet, how horrible they sometimes might be though. An impressive example is this movie showing a rockfall in Taiwan in August 2013. Such movies help to actually see the behaviour of large rocks impacting an asphalt road. Such observations are rare and help to improve models that are used to predict the runout distance and energies of large falling rocks. In the beginning of this movie, one can also see the rock mass detaching in the release zone (upper centre in the movie frame after 0:03 seconds).

Rockyfor3D allows to simulate the rockfall on roads and comparison of the risk in a situation with and without protective measures such as nets and forest. This provides all the infomation needed to conduct cost-benefit studies of protective measures. How to quantify the risk is explained in a documentation of the Swiss Federal roads office (available in German, French, Italian and English). Different case studies in Switzerland, France and Austria show that a protection forest along main roads easily add up to 1000 $ per year per ha.


A large group of ecorisQ members will meet during the Interdisciplinary workshop on Rockfall Protection in Innsbruck-Igls (Austria) from 17-19 May 2011. This workshop will offer a possibility for users of Rockyfor3D to discuss limits and possibilities of a 3D rockfall simulation model for trajectory studies.

The bèta version of Rockyfor3D version 4.0 has been tested by several members during the last three months. Their feedback has led to several improvements and the "official" release of version 4.0. In addition to the barrier effect of trees, this version allows to integrate the effect of rockfall nets in the simulation.