True 3D kinematic analysis for slope instability assessment in the Siq of Petra (Jordan), from high resolution TLS

The present paper describes a specific research performed in the framework of the project “Sustainable monitoring techniques for assessing instability of slopes in the Siq of Petra, Jordan” carried out by ISPRA from July 2012 to May 2015. Focus is given to true 3D kinematic analysis for slope stability assessment in the Siq from high resolution terrestrial laser scanning (TLS). The effectiveness of the model and its algorithm implemented for the analysis has been verified and tested after the May 2015 rockfall. The sudden rock collapse, affecting a portion of the Siq cliff, was previously identified by the model as potentially unstable. This knowledge, associated to the outcome of the stability analyses, also through a numerical model, will help in identifying the most sustainable actions to be realized to mitigate the risk of collapse in such a vulnerable and complex context.