@InProceedings{SabaBallPint:2006:NeClLi,
               author = "Saba, Marcelo Magalh{\~a}es Fares and Ballarotti, 
                         Maur{\'{\i}}cio Grade and Pinto J{\'u}nior, Osmar",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Geof{\'{\i}}sica Espacial (INPE.DGE) and Instituto Nacional de 
                         Pesquisas Espaciais, Divis{\~a}o de Geof{\'{\i}}sica Espacial 
                         (INPE.DGE) and Instituto Nacional de Pesquisas Espaciais, 
                         Divis{\~a}o de Geof{\'{\i}}sica Espacial (INPE.DGE)",
                title = "Negative cloud-to-ground lightning properties and lightning 
                         network detection efficiency from high-speed video observations",
            booktitle = "Proceedings...",
                 year = "2006",
         organization = "European Geosciences Union (EGU) General Assembly.",
             abstract = "From analysis of digital high-speed video records of 233 negative 
                         cloud-to-ground (CG) lightning flashes associated to 27 
                         thunderstorms in southeastern Brazil, various lightning properties 
                         have been determined. The analysis of the video records showed 
                         that although 20% of them were single-stroke flashes and the 
                         average number of strokes per flash was 3.8, a significant 
                         variation was observed in these parameters from storm to storm. In 
                         a smaller subset containing 138 flashes, 70 (51%) had multiple 
                         terminations on ground. 138 flashes produced 235 different strike 
                         points; therefore, the average number of strike points per CG 
                         flash was 1.70. Considering that in this study the missing of 
                         strokes is practically negligible, we can say from the average 
                         multiplicity and from the average number of strike points per 
                         flash, that each ground contact point is, in average, struck 2.2 
                         times. 608 time intervals between strokes of 186 negative 
                         multiple-stroke flashes presented a geometric mean value of 61 ms. 
                         A strong positive correlation between the number of subsequent 
                         strokes in a flash and the flash minimum duration may indicate 
                         that some processes concerning the time requisite for the channel 
                         decay and for the positive leader in the cloud to provide more 
                         charges for the next stroke, do not permit multiple strokes occur 
                         under a certain minimum time duration. Flash and stroke detection 
                         efficiency of the Brazilian lightning location system is 
                         discussed.",
  conference-location = "Vienna, Austria",
      conference-year = "2006-04-02",
             language = "en",
        urlaccessdate = "11 maio 2024"
}