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Topic 3 - Monitoring large slope instabilities

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SUBSURFACE MONITORING OF LARGE ROCKSLIDES IN NORWAY: A KEY REQUIREMENT FOR EARLY WARNING di Lars H. Blikra - Åknes/Tafjord Beredskap, N-6200 Stranda, Norway Lene Kristensen - Åknes/Tafjord Beredskap, N-6200 Stranda, Norway Mario Lovisolo - Centro Servizi di Geoingegneria (CSG), Via Cazzulini 15A - 15010 - Ricaldone (AL) - Italy DOI: 10.4408/IJEGE.2013-06.B-28 The risk posed by large rockslides in Norway is due to long run-out, the possibilities for river damming and the generation of disastrous tsunamis in fjords. The investigations, monitoring and early-warning that have been designed and implemented for the Norwegian rockslides follows strong requirements guided in national codes. Extensive investigations and implementation of relatively dense sensor network is needed in order to achieve reliable and robust monitoring of large and complex rockslides. The Nor Preview | Download Read More...
LANDSLIDE RISK REDUCTION BY COUPLING MONITORING LANDSLIDE RISK REDUCTION BY COUPLING MONITORING di Francesca Bozzano - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Ivan Cipriani - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Carlo Esposito - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Salvatore Martino - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Paolo Mazzanti - NHAZCA S.r.l., spin-off Sapienza Università di Roma, Via Cori snc - 00177 Rome (Italy) Alberto Prestininzi - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Alfredo Rocca - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI Gabriele Scarascia Mugnozza - Sapienza Università di Roma - Dipartimento di Scienze della Terra e Centro di Ricerca CERI DOI: 10.4408/IJEGE.2013-06.B-29 The importance of the reference engineering-geology model of a slope is a concept well established in the scientific and technical community facing on large infrastructures. The engineering-geology model is in fact a fundamental informative layer to understand and predict the structure-slope interactions and to design stabilization countermeasures. Such an issue has a relevant role in the case of unstable slopes: at this regard the Vajont case history represents a worldwide reference. Engineering-geology m Preview | Download Read More...
USING SATELLITE RADAR IMAGES TO INVESTIGATE THE INFLUENCE OF TECTONIC SETTING ON LARGE SLOPE INSTABILITIES di Anna De Agostini - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Massimo Barbieri - Sarmap S.A., Cascine di Barico, 10 - 6989 Purasca, Switzerland Alessio Cantone - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Marco Defilippi - Sarmap S.A., Cascine di Barico, 10 - 6989 Purasca, Switzerland Lorenzo Flaim - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Mario Floris - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Luca Gandolfo - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Rinaldo Genevois - University of Padua - Department of Geosciences - Via Gradenigo, 6 - 35131 Padova, Italy Paolo Pasquali - Sarmap S.A., Cascine di Barico, 10 - 6989 Purasca, Switzerland Paolo Riccardi - Sarmap S.A., Cascine di Barico, 10 - 6989 Purasca, Switzerland DOI: 10.4408/IJEGE.2013-06.B-30 The paper focuses on identification of tectonic setting on large slope instabilities in the area of Giudicarie Valley, located in the south-western sector of the Trentino-Alto Adige region (northern Italy), with particular reference to those phenomena inducing a high level of risk. The study area, located in the Southern Alps, shows a complex structural setting, mainly influenced by the south Giudicarie Line and its associated steep to subvertical faults WNW-dipping. Tectonic setting strongly influences the Preview | Download Read More...
EFFICIENCY OF STABILIZATION TECHNIQUES IN ACQUALORETO LANDSLIDE AREA (UMBRIA, ITALY) di Lucio Di Matteo - University of Perugia, Department of Earth Sciences - Perugia, Italy Luciano Faralli - S.G.A. Studio Geologi Associati, Via XX Settembre 76, 06121 - Perugia, Italy Nello Gasparri - S.G.A. Studio Geologi Associati, Via XX Settembre 76, 06121 - Perugia, Italy Riccardo Piccioni - S.G.A. Studio Geologi Associati, Via XX Settembre 76, 06121 - Perugia, Italy Daniela Valigi - University of Perugia, Department of Earth Sciences - Perugia, Italy Luca Domenico Venanti - S.G.A. Studio Geologi Associati, Via XX Settembre 76, 06121 - Perugia, Italy DOI: 10.4408/IJEGE.2013-06.B-31 This work, based on the results of a series of geotechnical and monitoring studies, analyses two landslides composed of heterogeneous altered marly clayey arenaceous rock and eluvial-colluvial deposits, located near the village of Acqualoreto (Central Italy). The landslides (called here A and B) are characterized by retrogressive movements approaching buildings and roads near the village and by different sliding surfaces between 10 and 25 m b.g.l. Maximum displacement rates were measured after the most sign Preview | Download Read More...
GB INSAR MEASUREMENT AT THE ÅKNES ROCKSLIDE, NORWAY di Lene Kristensen - Åknes/Tafjord Early Warning Centre - Ødegårdsvegen 176 - 6200 Stranda, Norway Carlo Rivolta - John Dehls - Lars H. Blikra - Åknes/Tafjord Early Warning Centre - Ødegårdsvegen 176 - 6200 Stranda, Norway DOI: 10.4408/IJEGE.2013-06.B-32 Åknes is a 54 mil. m3 rockslide at Storfjorden, Western Norway. It has the potential to form a devastating tsunami in the fjord, and therefore it is thoroughly investigated and continuously monitored. Five GB InSAR campaigns have been carried out since 2006 in order to investigate the patterns of surface displacement. Here we present the results of these measurements, and compare them with in situ measurements of surface displacement. The data provide detailed information on the displacement fields in the Preview | Download Read More...
STUDYING AND MONITORING LARGE LANDSLIDES WITH PERSISTENT SCATTERER DATA di Davide Notti - Università degli Studi di Pavia - Dipartimento di Scienze della Terra e dell’Ambiente - Via Ferrata, 1 - Pavia (Italy) Claudia Meisina - Università degli Studi di Pavia - Dipartimento di Scienze della Terra e dell’Ambiente - Via Ferrata, 1 - Pavia (Italy) Alessio Colombo - ARPA - Piemonte - (Italy) Luca Lanteri - ARPA - Piemonte - (Italy) Francesco Zucca - Università degli Studi di Pavia - Dipartimento di Scienze della Terra e dell’Ambiente - Via Ferrata, 1 - Pavia (Italy) DOI: 10.4408/IJEGE.2013-06.B-33 This work is focused on very slow moving landslides and the new generation of Persistent Scatterers PSI (SqueeSAR™ processing, developed by Telerilevamento Europa) that allows to increase the density and the time series quality of interferometric data. The improvement in the time series quality helps also to understand the behaviour of some processes and to have a best comparison with traditional monitoring system and/or rainfall data. The consequent aim of the research is to evaluate the potential and t Preview | Download Read More...
POSSIBILITY OF EARLY WARNING FOR LARGE-SCALE LANDSLIDES USING HYDROLOGICAL AND SEDIMENT TRANSPORT OBSERVATIONS IN MOUNTAIN RIVERS di Atsushi Okamoto - National Institute for Land and Infrastructure Management - Ibaraki, Japan Taro Uchida - National Institute for Land and Infrastructure Management - Ibaraki, Japan Shin-ichirou Hayashi - National Institute for Land and Infrastructure Management - Ibaraki, Japan Takuro Suzuki - Sabo & Landslide Technical Center - Tokyo, Japan Shintaro Yamashita - Chi-ken Sogo Consultants Co., Ltd. - Tokyo, Japan Satoshi Tagata - Nippon Koei Co., Ltd. - Tokyo, Japan Akihisa Fukumoto - Tenryugawa-Jouryu River Office, Chubu Regional Development Bureau, MLIT - Nagano, Japan Jun'ichi Kanbara - National Institute for Land and Infrastructure Management - Ibaraki, Japan DOI: 10.4408/IJEGE.2013-06.B-34 Early-warning systems for sediment disasters are important tools for disaster risk reduction, achieving sustainable development, and ensuring livelihoods. In 2005, the Japanese government initiated a new nationwide early warning system for landslide disasters. The main methodology of the system involves setting a criterion for the occurrence of debris flows and slope failures based on several rainfall indices. However, these rainfall thresholds did not always work well and could not ensure early evacuation. Preview | Download Read More...
MONITORING OF THE MOVEMENTS OF A DEEP, SLOW, CLAYEY LANDSLIDE AND 3D INTERPRETATION di Roberto Vassallo - University of Basilicata - School of Engineering - Via dell’Ateneo Lucano 10 - 85100 Potenza, Italy Rossella Pagliuca - University of Basilicata - School of Engineering - Via dell’Ateneo Lucano 10 - 85100 Potenza, Italy Caterina Di Maio - University of Basilicata - School of Engineering - Via dell’Ateneo Lucano 10 - 85100 Potenza, Italy DOI: 10.4408/IJEGE.2013-06.B-35 The Costa della Gaveta landslide is an active, deep and very slow landslide which is being monitored and studied since 2004. Recently new boreholes have been carried out and inclinometer tubes have been installed to deepen the comprehension of the 3D geometry and kinematics. Localized displacement on a slip surface is confirmed to be the prevailing movement mechanism. Thanks to the long term monitoring, even the slow internal viscous deformations of the landslide body have been evaluated and interpreted. So Preview | Download Read More...


	Content © 2018 Italian Journal of Engineering Geology and Environment This is the new scientific journal of the Research Center CERI