Ara es mostren els items 35-49 de 49

    • Rockfall fragmentation analysis: Vilanova de Banat case study 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2017)
      Text en actes de congrés
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      Fragmentation is a critical mechanism for the calculation of the trajectories of the blocks and the impact energies, for the assessment of the potential damage and for the design of protec-tive structures, although few ...
    • Rockfall magnitude-frequency relationship based on multi-source data from monitoring and inventory 

      Janeras Casanova, Marc; Lantada, Nieves; Núñez Andrés, María Amparo; Hantz, Didier; Pedraza Royo, Oriol; Cornejo, Rocío; Guinau Selles, Marta; García-Sellés, David; Blanco Hinojo, Laura; Gili Ripoll, José Antonio; Palau Ramirez, Joan (Multidisciplinary Digital Publishing Institute (MDPI), 2023-04)
      Article
      Accés obert
      Quantitative hazard analysis of rockfalls is a fundamental tool for sustainable risk management, even more so in places where the preservation of natural heritage and people’s safety must find the right balance. The first ...
    • Rockfalls: analysis of the block fragmentation through field experiments 

      Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Matas Casado, Gerard; Moya Sánchez, José; Prades Valls, Albert; Corominas Dulcet, Jordi; Lantada, Nieves; Núñez Andrés, María Amparo; Buill Pozuelo, Felipe; Puig i Polo, Càrol; Martínez Bofill, Joan; Salo Salgado, Lluis; Mavrouli, Olga Christina (2022-05)
      Article
      Accés obert
      Fragmentation is a common feature of rockfall that exerts a strong control on the trajectories of the generated blocks, the impact energies, and the runout. In this paper, we present a set of four real-scale rockfall tests ...
    • RockGIS: a GIS-based model for the analysis of fragmentation in rockfalls 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (2017-03-31)
      Article
      Accés obert
      A rockfall is a mass instability event frequently observed in road cuts, open pit mines and quarries, steep slopes and cliffs. After its detachment, the rock mass may disaggregate and break due to the impact with the ground ...
    • Sentinel-1 A-DInSAR approaches to map and monitor ground displacements 

      Krishnakumar, Vrinda; Qiu, Z; Monserrat Hernández, Oriol; Barra, Anna; López-Vinielles, Juan; Gao, Qi; Palamá, Riccardo; Gili Ripoll, José Antonio (Multidisciplinary Digital Publishing Institute (MDPI), 2021-03-16)
      Article
      Accés obert
      Persistent scatterer interferometry (PSI) is a group of advanced interferometric synthetic aperture radar (SAR) techniques used to measure and monitor terrain deformation. Sentinel-1 has improved the data acquisition ...
    • Simulating particle breakage and relative humidity effects in rockfill behaviour 

      Alonso Pérez de Agreda, Eduardo; Tapias, Mauricio A.; Gili Ripoll, José Antonio (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper presents an analysis of the mechanical behaviour of rockfill using the discrete element method. A background reference is the set of results of a few large scale triaxial tests performed at the UPC geotechnical ...
    • Simulation of full-scale rockfall tests with a fragmentation model 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (2020-05)
      Article
      Accés obert
      In this paper, we present the upgraded version of RockGIS, a stochastic program for the numerical simulation of rockfalls and their fragmentation, based on a fractal model. The code has been improved to account for a range ...
    • Simulation of rockfall fragmentation mechanism in a GIS-based tool 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio (CRC Press, 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Rockfalls are frequent instability processes in road cuts, open pit mines and quarries, steep slopes and cliffs. The attitude and persistency of joints within the rock mass define the size of kinematically unstable rock ...
    • Técnicas geomáticas como herramienta en el estudio de desprendimientos rocosos 

      Lantada, Nieves; Núñez Andrés, María Amparo; Corominas Dulcet, Jordi; Prades Valls, Albert; Matas Casado, Gerard; Buill Pozuelo, Felipe; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Puig i Polo, Càrol; Moya Sánchez, José (Ilustre Colegio Oficial de Ingenieros Técnicos en Topografía de España, 2022)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Los desprendimientos de rocas son fenómenos naturales que se producen de forma muy puntual en el tiempo, y que por lo general afectan a infraestructuras con alto impacto económico y social para la población. Por ello, el ...
    • The 2013 Ibiza calibration campaign of Jason-2 and Saral altimeters 

      Frappart, Frédéric; Roussel, Nicolas; Biancale, Richard; Martínez Benjamín, Juan José; Mercier, Flavien; Pérosanz, Felix; Gárate Pasquín, Jorge; Martin Davila, José; Pérez Gómez, Begoña; Gracia Gómez, Carlos; López Bravo, Rogelio; Tapia Gómez, Ana M.; Gili Ripoll, José Antonio; Hernández Pajares, Manuel; Salazar, Mario; Bonnefond, Pascal; Valles Casanova, I. Berenguer (2015-02-09)
      Article
      Accés restringit per política de l'editorial
      Realitzat a/amb:   Puertos del Estado / Real Instituto y Observatorio de la Armada / Universidade do Porto / Centre national d'études spatiales
      This study presents the results of the 2013 Ibiza (Western Mediterranean) calibration campaign of Jason-2 and SARAL altimeters. It took place from 14 to 16 September 2013 and was composed of two phases: the calibration of ...
    • The Baleares 2013 Calibration Campaign of Jason-2 and Saral Altimeters 

      Martínez Benjamín, Juan José; Frappart, Frédéric; Roussel, Nicolas; Biancale, Richard; Gárate Pasquín, Jorge; Martin Davila, José; Perez, Begoña; Gracia Gómez, Carlos; López Bravo, Rogelio; Tapia Gómez, Ana M.; Gili Ripoll, José Antonio; González González, Juan Carlos; Hernández Pajares, Manuel; Salazar Lino, Mário (2014)
      Comunicació de congrés
      Accés obert
      The 2013 Balearic campaign GNSS position analysis of the 2013 will be performed with different softwares by different groups (similarly as it is being done in the International GNSS Service for their different products), ...
    • The RockRisk project: rockfall risk quantification and prevention 

      Corominas Dulcet, Jordi; Lantada, Nieves; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Matas Casado, Gerard; Mavrouli, Olga Christina; Núñez Andrés, María Amparo; Moya Sánchez, José; Buill Pozuelo, Felipe; Abellán Fernández, Antonio; Puig i Polo, Càrol; Prades Valls, Albert; Martínez Bofill, Joan; Salo Salgado, Lluis (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2017)
      Text en actes de congrés
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      Realitzat a/amb:   Universiteit Twente / Scott Polar Research Institute
      Rockfalls are frequent instability processes in road cuts, open pit mines and quarries, steep slopes and cliffs. The orientation and persistence of joints within the rock mass define the size of the kinematically unstable ...
    • Two decades of GPS/GNSS and DInSAR monitoring of Cardona salt mines (NE of Spain) – natural and mining-induced mechanisms and processes 

      Rodriguez Llovera, Xavier; Puig i Polo, Càrol; Lantada, Nieves; Gili Ripoll, José Antonio; Marturiá Alavedra, Jordi (2020-04)
      Article
      Accés obert
      Cardona area presents surface rising and subsidence active movements. In 1999 a series of sinkholes appeared due to the infiltration of Cardener River water into the mine tunnels, damaging surface infrastructures. Since ...
    • Using mixed reality for the visualization and dissemination of complex 3D models in geosciences: application to the Montserrat massif (Spain) 

      Janeras Casanova, Marc; Roca Barberi, Joan Ramon; Gili Ripoll, José Antonio; Pedraza Royo, Oriol; Magnusson, Gerald; Núñez Andrés, María Amparo; Franklin, Karl A. (2022-10)
      Article
      Accés obert
      <jats:p>In the last two decades, both the amount and quality of geoinformation in the geosciences field have improved substantially due to the increasingly more widespread use of techniques such as Laser Scanning (LiDAR), ...
    • Using several monitoring techniques to measure the rock mass deformation in the Montserrat Massif 

      Janeras Casanova, Marc; Jara Salvador, José Antonio; López Pacheco, Ferran; Marturiá Alavedra, Jordi; Royan, Manuel J.; Vilaplana Fernández, Joan Manuel; Aguasca Solé, Alberto; Fabregas Canovas, Francisco Javier; Cabranes, Fabián; Gili Ripoll, José Antonio (Institute of Physics (IOP), 2015)
      Comunicació de congrés
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      Montserrat Mountain is located near Barcelona in Catalonia, at the north-east cornerof Spain, and its massif is formed by conglomerate interleaved by siltstone/sandstone withsteep slopes very prone to rock ...