Ara es mostren els items 11-30 de 32

  • El delta de l’Ebre: mirador privilegiat per a l’observació de llamps i d’altres fenòmens elèctrics 

    Pineda Ruegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David (2012-06-27)
    Article
    Accés obert
    El delta de l’Ebre presenta les característiques idònies per ser un gran laboratori a l’aire lliure per a l’observació de llamps i d’altres fenòmens elèctrics, que tenen lloc per sobre dels núvols de tempesta. Aquests ...
  • Estudi de l'episodi tornàdic nocturn amb precipitacions intenses del 2 de novembre de 2008 a Catalunya 

    Van der Velde, Oscar Arnoud; Bech, Joan; Pineda Ruegg, Nicolau; Rigo, Tomeu; Aran, Montserrat; Amaró, Jésica; Gayà, M; Arús, J; Montañá Puig, Juan (2010)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
    Aquest estudi presenta una anàlisi d’un episodi de temps sever que va tenir lloc la matinada del 2 de novembre de 2008, quan la costa sud de Catalunya va estar afectada per una intensa depressió que va dur associada ...
  • 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-speed observations of transient luminous events and lightning (The 2008/2009 Ebro Valley campaign) 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Soula, Serge; Romero Durán, David; Pineda Ruegg, Nicolau; Solà de Las Fuentes, Gloria; March Nomen, Víctor (2010)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
  • High-speed video of lightning and x-ray pulses during the 2009–2010 observation campaigns in northeastern Spain 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; March Nomen, Víctor; Romero Durán, David; Solà de Las Fuentes, Gloria; Pineda Ruegg, Nicolau (2012-11-01)
    Article
    Accés restringit per política de l'editorial
    This paper summarizes results obtained by the 2009–2010 field campaigns conducted in northeastern Spain using a high speed camera, VHF interferometer, VLF lightning location system and scintillation detectors for energetic ...
  • High-speed video recordings of lightning, electric fields and high-energy detections during thunderstorms in Catalonia Spain 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; Pineda Ruegg, Nicolau; Betz, H.D.; March Nomen, Víctor; Solà de Las Fuentes, Gloria (2010)
    Comunicació de congrés
    Accés obert
    High-speed video recordings of natural lightning flashes show amazing details of this phenomenon. The paper summarizes the results of the 2009 measurement campaign where the combination of electric fields, total ...
  • 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 ...
  • Lightning Mapping Array in Ebre’s Delta: campaign 2011 results. Comparison with other LLS 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Pineda Ruegg, Nicolau (2012)
    Presentació
    Accés restringit per decisió de l'autor
  • Negative lightning current parameters and detection efficiency for two operational LLS in Catalonia (NE Spain) 

    March Nomen, Víctor; Montañá Puig, Juan; Pineda Ruegg, Nicolau (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Lightning current parameters derived from Lightning Location Systems (LLS) have been used in the past to assess their influence in the local performance of the Network. The paper presents an analysis of the statistical ...
  • Observation and properties of a sub-cloud bidirectional leader 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Williams, Earle R.; Pineda Ruegg, Nicolau; Romero Durán, David (2014)
    Text en actes de congrés
    Accés obert
    In this paper we present the evolution of a bidirectional leader which appeared in ‘virgin’ air. In the observations we did not find any delay between the onsets of the two leader ends. The positive leader end presented a ...
  • Observations of Western Mediterranean TLE: LS8000 intracloud lightning and high-speed video 

    Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Romero Durán, David; Soula, Serge; Pineda Ruegg, Nicolau; Bech, Joan; Reglero, V. (2009)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
    Transient luminous events (TLE) are electrical phenomena occurring between the ionosphere and the tops of thunderstorms. First discovered in 1989, the family of TLE now consists of different members: sprites, sprite ...
  • 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 ...
  • Study of the total lightning activity in a hailstorm 

    Montañá Puig, Juan; Soula, Serge; Pineda Ruegg, Nicolau; Van der Velde, Oscar Arnoud; Clapers, Pere; Solà de Las Fuentes, Gloria; 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. ...
  • Temporal and spatial evolution of intracloud lightning associated ith sprite-producing positive cloud-to-ground flashes in Northeastern Spain 

    Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Soula, Serge; Pineda Ruegg, Nicolau; Chanrion, Olivier (2009)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
  • Total lightning activity and electrostatic field in a hail-bearing thunderstorm in Catalonia 

    Montañá Puig, Juan; Pineda Ruegg, Nicolau; Soula, Serge; March Nomen, Víctor (2006)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
    This paper presents the analysis of a hailstorm episode occurred in the city of Terrassa (Barcelona) Spain on the 10th July of 2005 (Figure 1.a)
  • Total lightning analysis of a tornadic severe weather event 

    Pineda Ruegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2009)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
    This study presents an analysis of total lightning and radar data of a severe weather event that took place in the early morning of 2nd November 2008 in Catalonia (NE Spain). A general overview of the synoptic framework ...
  • 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, Gloria; 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 in a TLE-bearing Winter thunderstorm over the Western Mediterranean 

    Pineda Ruegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Soula, Serge (2008)
    Comunicació de congrés
    Accés restringit per decisió de l'autor
    In this paper we present the analysis of one specific thunderstorm, which occurred during the night of 17th to 18th December 2007 in the western Mediterranean Sea, in the coastal area of Catalonia (NE Spain) (Fig.1).
  • Total lightning observations to wind turbines 

    Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Romero Durán, David; March Nomen, Víctor; Solà de Las Fuentes, Gloria; Pineda Ruegg, 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 Ruegg, Nicolau; Solà de Las Fuentes, Gloria; 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 ...