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The main objective of this paper has been the numerical evaluation of static and dynamic stability of a small rock sea cliff located in Peschici, a small city along the Gargano promontory (Southern Italy),very important for tourism. A considerable effort has been spent to numerically evaluate both most likely as well as potential landslide displacements. The Gargano promontory is characterized by a widespread occurrence of different land morphologies like cliffs, coves, bays. ‘Rupe Castello’ zone of the Peschici Cliff has been selected for this paper, as the zone to which the highest geohazard level has been ascribed. The study has been carried out in two steps.
In the first step, by a global geo-mechanical surveys of the whole promontory, several discontinuity families have been recognized (stereonet technique) and then a commercial software using the Markland test has been applied in order to identify the kinematic mechanism which could eventually affect the stability of the whole Peschici area. In the second step, five geological sections in five different directions crossing the “Rupe Castello” zone, have been selected. Then a commercial 2D slope stability code has been applied in order to perform both static and dynamic stability analyses. Some conclusions have been discussed.
4th Canadian Conference on Geohazards : From Causes to Management, J. Locat, D. Perret, D. Turmel, D. Demers et S. Leroueil
University of G. d’Annunzio Chieti
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