Ara es mostren els items 1-19 de 19

  • Análisis de la actividad de rayos y de tormentas relacionadas con la producción de rayos gamma terrestres 

    Fabró Tàpia, Ferran (Universitat Politècnica de Catalunya, 2015-03-05)
    Tesi
    Accés obert
    Terrestrial Gamma ray Flashes (TGFs) have been known since 20 years ago, but since the first moment of the discovery it was clear that they were related to lightning and thunderstorms. The latest studies revealed that TGFs ...
  • Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain 

    Fabró Tàpia, Ferran; Montañá Puig, Juan; Pineda Rüegg, Nicolau; Argemí Ribera, Oriol; Van der Velde, Oscar Arnoud; Romero Durán, David; Soula, Serge (2016-08-25)
    Article
    Accés obert
    The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented. For the ¿rst time, ...
  • Analysis of global Terrestrial Gamma Ray Flashes distribution and special focus on AGILE detections over South America 

    Fabró Tàpia, Ferran; Montanya, Joan; Marisaldi, Martino; Van der Velde, Oscar Arnoud; Fuschino, Fabio (2015-03-01)
    Article
    Accés obert
    Global distribution of the Terrestrial Gamma-ray Flashes (TGFs) detected by AGILE and RHESSI for the period from March 2009 to July 2012 has been analysed. A fourth TGF production region has been distinguished over the ...
  • Basic lightning flash properties derived from lightning mapping array data 

    Montañá Puig, Juan; Pineda Ruegg, Nicolau; Van der Velde, Oscar Arnoud; Solà de Las Fuentes, Gloria; Argemí Ribera, Oriol; Fabró Tàpia, Ferran; Romero Durán, David; Aranguren Fino, Daniel (2016)
    Text en actes de congrés
    Accés obert
    The size and duration of lightning flashes are examined. Data from the Ebro Valley Laboratory Lightning Mapping Array is used as reference. Additional data from the VLF/LF LINET network is included. In the analysis, each ...
  • Characteristics of lightning flashes generating dancing sprites above thunderstorms 

    Soula, Serge; Mlynarczyk, Janusz; Fullekrug, Martin; Georgis, J.-F.; Pineda Rüegg, Nicolau; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fabró Tàpia, Ferran (2017)
    Comunicació de congrés
    Accés obert
    During the night of October 29-30, 2013, a low-light video camera at Pic du Midi (2877 m) in the French Pyrénées, recorded TLEs above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached ...
  • Comparison of global RHESSI and AGILE TGFs distributions and analysis of all AGILE satellite passes over South America. 2009-2012 period 

    Fabró Tàpia, Ferran; Montañá Puig, Juan; Marisaldi, Martino (2014)
    Text en actes de congrés
    Accés obert
    RHESSI and AGILE TGFs distributions in the period 2009-2012 are compared. Analysis of differences in geographical, hourly, monthly distributions of the three main TGF production regions in Earth due to differences in ...
  • Dancing sprites: detailed analysis of two case studies 

    Soula, Serge; Mlynarczyk, Janusz; Fullekrug, Martin; Pineda Rüegg, Nicolau; Georgis, J.-F.; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fabró Tàpia, Ferran (2017-03-27)
    Article
    Accés obert
    On 29–30 October 2013, a low-light video camera installed at Pic du Midi (2877¿m), recorded transient luminous events above a very active storm over the Mediterranean Sea. The minimum cloud top temperature reached -73°C, ...
  • Electromagnetic radiation of simulated mid-gap streamers 

    Montañá Puig, Juan; Fabró Tàpia, Ferran (Zakon Group, 2016)
    Text en actes de congrés
    Accés obert
    Electromagnetic field from simulated double-headed mid-gap streamers is computed. The effect of the applied electric field is studied by considering electric fields higher than the conventional breakdown threshold ...
  • Fair weather induced charges and currents on tall wind turbines and experiments with kites 

    López Trujillo, Jesús Alberto; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; Romero Durán, David (Zakon Group, 2016)
    Text en actes de congrés
    Accés obert
    Earth’s atmospheric potential rapidly increases up to few tens of kilovolts below 200 m altitude. This potential drop will induce charge to tall objects at ground by virtue of electrostatic induction. In this work we ...
  • Global distribution of winter lightning: a threat to wind turbines and aircraft 

    Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; March Nomen, Víctor; Williams, Earle R.; Pineda Ruegg, Nicolau; Romero Durán, David; Solà de Las Fuentes, Gloria; Freijo Álvarez, Modesto (2016-01-01)
    Article
    Accés obert
    Lightning is one of the major threats to multi-megawatt wind turbines and a concern for modern aircraft due to the use of lightweight composite materials. Both wind turbines and aircraft can initiate lightning, and very ...
  • High altitude leaders mapped by the Colombia lightning mapping array 

    Montañá Puig, Juan; López Trujillo, Jesús Alberto; Van der Velde, Oscar Arnoud; Romero Durán, David; Fabró Tàpia, Ferran (2016)
    Text en actes de congrés
    Accés obert
    On April 2015 a Lightning Mapping Array network (COL-LMA) was installed at the north of Colombia. This network provides 3D mapping of the development of lightning leaders. For the first time such network has been setup in ...
  • Lightning flash properties derived from lightning mapping array data 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Solà de Las Fuentes, Gloria; Fabró Tàpia, Ferran; Romero Durán, David; Pineda Ruegg, Nicolau; Argemí Ribera, Oriol (2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    in this paper size and duration of lightning flashes are examined. Data from the Ebro Valley Laboratory Lightning Mapping Array is used as reference. Additional data from the VLF/LF LINET network and meteorological radar ...
  • Observation of intrinsically bright terrestrial gamma ray flashes fromthe Mediterranean basin 

    Gjesteland, T.; Ostgaard, N.; Laviola, S.; Miglietta, M.M.; Arnone, E.; Marisaldi, Martino; Fuschino, Fabio; Collier, B.; Fabró Tàpia, Ferran; Montañá Puig, Juan (2015-12-14)
    Article
    Accés obert
  • 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, Gloria; Hermoso Costa, Juan Ramón; Soula, Serge; Williams, Earle; Pineda Ruegg, 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 ...
  • Spatio-temporal dimension of lightning flashes based on three-dimensional Lightning Mapping Array 

    López Trujillo, Jesús Alberto; Pineda Rüegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Fabró Tàpia, Ferran; Romero Durán, David (2017-10-15)
    Article
    Accés obert
    3D mapping system like the LMA - Lightning Mapping Array - are a leap forward in lightning observation. LMA measurements has lead to an improvement on the analysis of the fine structure of lightning, allowing to characterize ...
  • Sprites and elves as proxy of energetic lightning flashes in winter: what can we learn from mesospheric discharges for the protection of wind turbines? 

    Montañá Puig, Juan; Fabró Tàpia, Ferran; Van der Velde, Oscar Arnoud; Hermoso, Blas (2011)
    Text en actes de congrés
    Accés obert
    Sprites and Elves are commonly observed in Europe, especially also in winter maritime storms. It is well known that sprites are related to large electric charge positive flashes and elves are related with high amplitude ...
  • 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, Gloria; 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 ...
  • 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, Gloria; 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 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, Gloria; 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 ...