@Article{WarnerSabSchHelOrv:2016:ObBiLi,
author = "Warner, Tom A. and Saba, Marcelo Magalh{\~a}es Fares and
Schumann, Carina and Helsdon Junior, John H. and Orville, Richard
E.",
affiliation = "{South Dakota School of Mines and Technology} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {South Dakota School of Mines and
Technology} and {Texas A\&M University}",
title = "Observations of bidirectional lightning leader initiation and
development near positive leader channels",
journal = "Journal of Geophysical Research: Atmospheres",
year = "2016",
volume = "121",
number = "15",
pages = "9251--9260",
month = "Aug.",
keywords = "lightning, initiation, bipolar, bidirectional, leader,
branching.",
abstract = "Based on the analysis of high-speed optical and electric field
change data, we present three observed cases in which a naturally
occurring bidirectional lightning leader initiated and developed
in virgin air near a previous established positive leader channel.
Twice a new leader formed near an upward propagating positive
leader that had initiated from a tower during an upward flash and
once a new leader formed near a downward propagating positive
leader prior to a positive cloud-to-ground return stroke. There
were clear and consistent behavioral differences between the
positive and negative leader ends of the newly formed
bidirectional leader, and the positive end grew more slowly than
the negative end in each case. In all three cases, the negative
end of the bipolar leader connected with the previously formed
positive leader channel creating a new positive leader branch.
These rare observations show the bidirectional nature of naturally
occurring lightning and suggest that positive leaders can gain
branches by connection with newly formed bipolar leaders.",
doi = "10.1002/2016JD025365",
url = "http://dx.doi.org/10.1002/2016JD025365",
issn = "2169-8996 and 2169-897X",
language = "en",
targetfile = "warner_observations.pdf",
urlaccessdate = "27 abr. 2024"
}