@InProceedings{CamposSaba:2012:ElFiWa,
author = "Campos, Leandro Zanella de Souza and Saba, Marcelo Magalh{\~a}es
Fares",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)}",
title = "Electric field waveforms of M components in negative and positive
ground flashes",
booktitle = "Proceedings...",
year = "2012",
organization = "International Conference on Lightning Protection, 31. (ICLP).",
keywords = "M-component, lightning.",
abstract = "There has been some discussion concerning the nature of luminosity
pulses observed during the continuing currents of positive
c1oud-to-ground flashes. It still undefined whether or not these
pulses can be considered M components when compared to similar
events observed in negative flashes. In the present paper we
expand this discussion by analyzing electric field waveforms
associated with channel luminosity enhancements of both negative
and positive ground flashes. Typically, negative M components are
preceded by high-frequency pulses similar to those that can are
associated to recoil leaders that are visible below cloud base. On
the other hand, luminous processes in positive flashes (similar to
M components) did not present a particularly common electric field
signature, and no pulses could be positively correlated to their
inception inside the cloud. We believe that this polarity
asymmetry favors previous theories on the production of negative M
components according to the bidirectional leader model. The
distinctive features of the positive M components suggest that
they are related to different processes.",
conference-location = "Viena",
conference-year = "2012",
label = "lattes: 0505123426174183 2 CamposSaba:2012:ElFiWa",
language = "en",
targetfile = "campos_electric.pdf",
urlaccessdate = "21 maio 2024"
}