Exploració per tema "Electricitat atmosfèrica"

Ara es mostren els items 1-20 de 28

    • A propagative model for simulations of electric fields produced by downward leaders 

      Hermoso Costa, Juan Ramón; Montañá Puig, Juan; March Nomen, Víctor; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; Romero Durán, David; Hermoso Alameda, Blas; Pineda Rüegg, Nicolau (2012-07-13)
      Article
      Accés obert
      Comparisons of simulated downward negative leaders with experimental measurements are presented in this paper. In order to simplify, the leaders are considered to progress vertically and charge distributions and leader ...

    • Analysis of five Gigantic Jets observed near Réunion Island with video and photographic cameras 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Huet, Patrice; Barthe, Christelle; Bor, Jozsef (Elsevier, 2011)
      Text en actes de congrés
      Accés obert
      Five gigantic jets (GJ) have been recorded by a camera on March 7th 2010, at a very closedistance above an isolated tropical storm east of Réunion Island. Three of them were produced within about 4 minutes before the storm ...

    • Análisis de estructuras de carga de dos tormentas eléctricas registradas por lared Lightning Mapping Array en el Magdalena Medio colombiano 

      Ardila Murillo, Brandon Steven; Soto Ríos, Edison Andrés; Argüello Barbosa, Didier; Tello Rodríguez, Heribert; López Trujillo, Jesús Alberto; Montañá Puig, Juan (2022-05-01)
      Article
      Accés obert
      A partir de la ubicación de la red Lightning Mapping Array LMA en límites de los municipios de Barrancabermeja y Yondó en 2018, se han tomado datos ininterrumpidos de descargas IC y CG que ocurren sobre esta zona de estudio. ...

    • Automated analysis and statistics of lightning leader speed, local flash rates and electric charge structure in thunderstorms 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto (2018)
      Comunicació de congrés
      Accés obert
      We introduce new methods for the analysis of complex three-dimensional lightning data produced by Lightning Mapping Arrays and illustrate them by cases of a mid-latitude severe weather producing thunderstorm and a tropical ...

    • Characteristics and conditions of production of transient luminous events observed over a maritime storm 

      Lointier, G.; Lefeuvre, F.; Soula, Serge; Van der Velde, Oscar Arnoud; Palmiéri, J.; Chanrion, Olivier; Neubert, Torsten; Montañá Puig, Juan; Gangneron, F.; Meyerfeld, Y. (2010-07-08)
      Article
      Accés restringit per política de l'editorial
      On the night of 15/16 November 2007, cameras in southern France detected 30 transient luminous events (TLEs) over a storm located in the Corsican region (France). Among these TLEs, 19 were sprites, 6 were halos, and 5 were ...

    • Characteristics of lightning related to wildfire ignitions in Catalonia 

      Pineda Rüegg, Nicolau; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2012-07-21)
      Article
      Accés restringit per política de l'editorial
      What are the characteristics of lightning that influence the probability that an individual stroke will ignite a wildfire? It is generally accepted that long continuing current following some return strokes is the cause ...

    • Charge structure analysis of a severe hailstorm with predominantly positive cloud-to-ground lightning 

      Pineda Ruegg, Nicolau; Rigo, Tomeu; Montañá Puig, Juan; Van der Velde, Oscar Arnoud (2016-03-10)
      Article
      Accés restringit per decisió de l'autor

    • Design of a field mill sensor to be used in an UAV platform for charge control research. Field meal sensor 

      Torrent Duch, Arnau (Universitat Politècnica de Catalunya, 2020-11-09)
      Treball Final de Grau
      Accés obert
      Nowadays in aviation lightning safety efforts are focused on limiting the damage done to an aircraft when struck, and very little research on the reduction of lightning strikes has been carried out. Studies show that ...

    • Development and analysis of novel mission scenarios based on Atmosphere-Breathing Electric Propulsion (ABEP) 

      Vaidya, Shreepali Sanjay; Traub, Constantin; Romano, Francesco; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Sureda Anfres, Miquel; García Berenguer, Marina (2022-10)
      Article
      Accés obert
      Operating satellites in Very Low Earth Orbit (VLEO) benefit the already expanding New Space industry in applications including Earth Observation and beyond. However, long-term operations at such low altitudes require ...

    • Diseño de sistemas de medida de potencial atmosférico mediante cohetes y drones cautivos 

      Ortiz Capilla, Esther (Universitat Politècnica de Catalunya, 2023-09-26)
      Treball Final de Grau
      Accés obert
      En este estudio se presentan las mejoras desarrolladas para los sistemas de medida de potencial atmosférico desarrollado por el grupo de investigación en electricidad atmosférica y rayos de la UPC (RLG-UPC). Se trabajará ...

    • Evaluation of Geostationary Lightning Mapper performance using the Colombia-Lightning Mapping Array 

      Borràs Farnós, Mar (Universitat Politècnica de Catalunya, 2022-06-22)
      Treball Final de Grau
      Accés obert
      The Geostationary Lightning Mapper (GLM) on the Geostationary Operational Environmental Satellites - R (GOES-R) series satellites is the first operational lightning mapper flown in a geostationary orbit, which provides ...

    • Evolution of gigantic jets at high temporal and spatial resolution 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto (2018)
      Comunicació de congrés
      Accés obert
      Gigantic Jets (GJ) are lightning discharges between the cloud and the lower ionosphere, which manifest as leaders at low altitude and transition to streamers as they rise in altitude. The evolution has never been imaged ...

    • Experiments with a tethered drone to investigate induced charges on a vertically arranged conductor during fair weather 

      Sousa Arcanjo, Marcelo Augusto; Fontanes Molina, Pol; Urbani, Michele; Montanya Puig, Joan (2021)
      Text en actes de congrés
      Accés obert
      To better understand the phenomena associated with electrostatic charges and potential distribution over vertical conductors, this work describes preliminary results obtained with a tethered drone that is used to lay ...

    • 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 ...

    • Gigantic jet discharges evolve stepwise through the middle atmosphere 

      Van der Velde, Oscar Arnoud; Montanya, Joan; López Trujillo, Jesús Alberto; Cummer, Steven A. (2019-09-25)
      Article
      Accés obert
      In 2002 it was discovered that a lightning discharge can rise out of the top of tropical thunderstorms and branch out spectacularly to the base of the ionosphere at 90¿km altitude. Several dozens of such gigantic jets have ...

    • Gravity waves, meteor trails and asymmetries in elves 

      Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fullekrug, Martin; Soula, Serge (Elsevier, 2011)
      Text en actes de congrés
      Accés obert
      From June 2008 to March 2011 more than 400 elves have been recorded by cameras in southern France and northeastern Spain. A considerable fraction of elves are not as uniform as predicted by theory. We demonstrate examples ...

    • Lightning development associated with two negative gigantic jets 

      Rutledge, Steven A.; Lang, Timothy J.; Cohen, Morris B.; Van der Velde, Oscar Arnoud; MacGorman, Donald R.; Beasley, William; Stanley, Mark A.; Lu, Gaopeng; Cummer, Steven A.; Lyons, Walter A.; Krehbiel, Paul R.; Li, Jingbo; Rison, William; Thomas, Ronald J.; Edens, Harald E. (2011-06-21)
      Article
      Accés restringit per política de l'editorial
      We report observations of two negative polarity gigantic jets sufficiently near very high‐frequency (VHF) lightning mapping networks that the associated lightning characteristics and charge transfer could be investigated. ...

    • Lightning flash properties derived from lightning mapping array data 

      Montañá Puig, Juan; Van der Velde, Oscar Arnoud; Solà de las Fuentes, Glòria; 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 ...

    • Mecanisme per aïllar una instal·lació durant una tempesta elèctrica 

      Codina Torras, Eloi (Universitat Politècnica de Catalunya, 2020-02-06)
      Treball Final de Grau
      Accés obert
      En aquest projecte es proposa un prototip per aïllar dues instal·lacions elèctriques a fi d’evitar la transmissió de sobrevoltatges derivats de descàrregues atmosfèriques. Es tracta d’una aproximació a l’enginyeria des ...

    • Multi-instrumental analysis of large sprite events and of their producing storm in southwestern France 

      Soula, Serge; Van der Velde, Oscar Arnoud; Montañá Puig, Juan; Fullekrug, Martin; Farges, Thomas; Bór, József; Iacovella, F.; Georgis, Jean-Francois; Naitamor, S.; Martin, J.-M. (Elsevier, 2011)
      Text en actes de congrés
      Accés obert
      During the night of 01-02 September, 2009, several TLEs including 3 halos and 16 distinct sprites were observed above a storm in north-western Mediterranean Sea with a camera at Pic du Midi (42.93° N, 0.14° E, 2877 m). ...