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Ara es mostren els items 32-49 de 49

    • Registration of X-rays at 2500 m altitude in association with lightning flashes and thunderstorms 

      Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; Romero Durán, David; Solà de las Fuentes, Glòria; Hermoso Costa, Juan Ramón; Soula, Serge; Williams, Earle; Pineda Rüegg, Nicolau (2014)
      Article
      Accés obert
      Electric fields and high-energy radiation of natural lightning measured at close range from a mountaintop tower are discussed. In none of the 12 negative cloud-to-ground upward flashes were X-rays observed. Also no energetic ...

    • Seasonal variations on the conditions required for the lightning production 

      Salvador Yuste, Albert; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Solà de las Fuentes, Glòria (2020-10-01)
      Article
      Accés obert
      Given the growing concern on lightning threats outside the main warm-season, the objective of this study is to get further insight on the seasonal variations of the necessary conditions required for the production of ...

    • Study of the total lightning activity in a hailstorm 

      Montañá Puig, Juan; Soula, Serge; Pineda Rüegg, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de las Fuentes, Glòria; Bech, Joan; Romero Durán, David (2007)
      Comunicació de congrés
      Accés restringit per decisió de l'autor
      A thunderstorm which developed in North-Eastern region of Spain on 16th June, 2006 is analyzed. This thunderstorm could be severe because it produced hailstones larger than 19 mm. The cell life time was 3h 30 minutes. ...

    • Study of the total lightning activity in a hailstorm 

      Montañá Puig, Juan; Soula, Serge; Pineda, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de las Fuentes, Glòria; Bech, Joan; Romero Durán, David (2009)
      Article
      Accés restringit per decisió de l'autor
      A thunderstorm that developed over northeastern Spain on 16 June 2006 is analyzed. This severe thunderstorm produced hailstones as large as 40 mm and had a lifetime of 3 h and 30 min. Radar cross-sections show strong ...

    • The 2007 objectives of the Eagle Nest Tower 

      Solà de las Fuentes, Glòria; Montañá Puig, Juan; Romero Durán, David; March Nomen, Víctor (2007)
      Comunicació de congrés
      Accés restringit per decisió de l'autor

    • Thunderstorm charge structures favouring cloud-to-ground lightning 

      Salvador Yuste, Albert; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Solà de las Fuentes, Glòria (2021-08)
      Article
      Accés obert
      Thunderstorm electrical structures favouring cloud-to-ground lightning were investigated through a Lightning Mapping Array (LMA), an accurate three-dimensional lightning location system that allows inferring the heights ...

    • Total lightning detections of lightning flashes recorded by means of high-speed videos 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de las Fuentes, Glòria; Pineda Ruegg, Nicolau (2011)
      Text en actes de congrés
      Accés restringit per decisió de l'autor
      A detailed analysis of two lightning flashes is presented. High speed video, total lightning detections and electric field measurements are the basis of the study. In general, the observed negative cloud-to-ground ...

    • Total lightning observations to wind turbines 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de las Fuentes, Glòria; Pineda Rüegg, Nicolau; Hermoso Alameda, Blas; Senosiáin Miquélez, Vicente (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In summer 2011 a new VHF Lightning Mapping Array was installed at the northeast of Spain. In that area a VHF interferometer and a VLFILF lightning detection networks are also operative. The close presence of wind farms in ...

    • Total lightning, electrostatic field and meteorological radar applied to lightning hazard warning 

      Montañá Puig, Juan; Aranguren Fino, Daniel; Pineda Rüegg, Nicolau; Solà de las Fuentes, Glòria; Romero Durán, David; March Nomen, Víctor (2008)
      Comunicació de congrés
      Accés restringit per decisió de l'autor
      This paper presents the analysis of various combinations of data sets with the purpose of evaluation of lightning warning methods. The data sets include CG flashes, IC sources, radar reflectivity and, for some specific ...

    • Two upward lightning at the Eagle Nest tower 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de las Fuentes, Glòria; Pineda Rüegg, Nicolau; Soula, Serge; Hermoso Alameda, Blas (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A new instrument composed by a high speed camera, two high energy detectors, a E-field antenna and a VHF antenna were installed at the Eagle Nest tower (northeast of Spain) during summer 2011. With this equipment several ...

    • Two-years (2004-2005) of Safir evaluation in Catalonia 

      Montañá Puig, Juan; Pineda Rüegg, Nicolau; March Nomen, Víctor; Illa Arnau, Àngel; Romero Durán, David; Solà de las Fuentes, Glòria (2006)
      Comunicació de congrés
      Accés restringit per decisió de l'autor

    • VEHICLES ELÈCTRICS (Examen 2n quadrimestre, 2n parcial) 

      Solà de las Fuentes, Glòria (Universitat Politècnica de Catalunya, 2014-06-16)
      Examen
      Accés restringit a la comunitat UPC

    • VEHICLES ELÈCTRICS (Examen 2n quadrimestre, 2n parcial) 

      Solà de las Fuentes, Glòria (Universitat Politècnica de Catalunya, 2016-06-10)
      Examen
      Accés restringit a la comunitat UPC

    • Winter lightning activity in specific global regions and implications to wind turbines and tall structures 

      March Nomen, Víctor; Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; Romero Durán, David; Solà de las Fuentes, Glòria; Freijo Álvarez, Modesto; Pineda Rüegg, Nicolau (Zakon Group, 2016)
      Text en actes de congrés
      Accés obert
      The paper presents winter lightning maps on specific regions in the northern hemisphere. Four different degrees of winter lightning activity are defined based on information derived from Japanese case. Based on this reference ...

    • Winter lightning triggered by wind-turbines: the case of snowstorm Filomena 

      Pineda Rüegg, Nicolau; Fabró Tapia, Ferran; Montañá Puig, Juan; López Trujillo, Jesús Alberto; Solà de las Fuentes, Glòria; Rodríguez Ballester, Oriol (2022)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Winter storm Filomena battered the Iberian Peninsula on the 9-10th January 2021, covering the eastern half of Spain with a huge amount of snow. Apart from the historical snowfall, lightning activity was observed during ...

    • X-rays and microwave RF power from high voltage laboratory sparks 

      Montañá Puig, Juan; Fabró Tàpia, Ferran; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David; Argemí Ribera, Oriol (2015-07-16)
      Article
      Accés obert
      Lightning flashes involve high energy processes that still are not well understood. In the laboratory, high voltage pulses are used to produce long sparks in open air allowing the production of energetic radiation. In this ...

    • X-rays and microwave RF power from high voltage laboratory sparks 

      Montañá Puig, Juan; Fabró Tàpia, Ferran; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David (2014)
      Text en actes de congrés
      Accés obert
      Lightning involves high energy processes that still are not well understood. In the laboratory voltages pulses are used to produce long sparks allowing the production of energetic radiation. In this paper X-rays emitted ...

    • X-rays from laboratory sparks in air: the relationship between runaway electrons and the electric field 

      March Nomen, Víctor; Montañá Puig, Juan; Romero Durán, David; Solà de las Fuentes, Glòria; Van der Velde, Oscar Arnoud (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This article presents an experiment in which the gap distance was varied between 46 and 84 cm. Series of 15 voltage impulses were applied for each distance and different peak voltages with a rise time of 600 ns. The results ...