Geomorphological Analyses, Geomatic Surveys and Numerical Modelling for the Characterization of the Chervaz Deep-Seated Gravitational Slope Deformation, Chambave (AO)

Bacenetti, Marco; Spreafico, Margherita Cecilia; Fabrizio, Elettri; Giardino, Marco; Perotti, Luigi; Borgatti, Lisa; Ghirotti, Monica; Ratto, Sara

doi:10.1007/978-3-319-09057-3_93

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“…The coupling with Unmanned Aerial Vehicle (UAV) could eventually extend the use of CRP, thus covering a wider range of scales. If the scale analysis decrease, typical geomorphological point of view could be covered by using other geomatics techniques such as ALS and/or Aerial Photogrammetry [Lucchesi et al, 2013;Bacenetti et al, 2015]. These general indications can help in the choice of the convenient method, but each different case has to be carefully evaluated, considering all the variables which can influence the final decision.…”

Section: Discussionmentioning

confidence: 99%

Terrestrial Remote Sensing techniques to complement conventional geomechanical surveys for the assessment of landslide hazard: The San Leo case study (Italy)

Spreafico

Perotti

Cervi

et al. 2015

European Journal of Remote Sensing

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The San Leo village, located near to Rimini (northern Italy), was built in the medieval period on the top of a calcarenite and sandstone plateau, affected by lateral spreading associated with secondary rock falls and topples. In fact, a number of landslides endangered the historical town since centuries. In order to describe the structural features driving these slope instability phenomena, a complete Terrestrial Laser Scanner (TLS) survey all around the San Leo cliff was performed. Moreover, Close-Range Photogrammetric (CRP) surveys and conventional geomechanical surveys on scanlines have been carried out. The 3D geometry of the cliffs was extracted and critical areas have been investigated in detail using dense Digital Surface Models (DSMs) obtained from CRP or TLS. The results were used to define the structural features of the plateau, to recognize more fractured areas, and to perform kinematic analyses, in order to assess the joint sets predisposing to slope instability at the cliff scale. The creation of a 3D model was also fundamental for the implementation of the geological model to be used in numerical modelling for hydrogeological characterization and slope stability analyses.

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Section: Discussionmentioning

confidence: 99%