@InProceedings{CamposSaba:2012:CoAn,
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: A comparative analysis",
booktitle = "Proceedings...",
year = "2012",
organization = "International Conference on Lightning Protection, 31. (ICLP).",
publisher = "IEEE Computer Society",
address = "Washington",
note = "Informa{\c{c}}{\~o}es Adicionais: There has been some discussion
concerning the nature of luminosity pulses observed during the
continuing currents of positive cloud-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..",
keywords = "M Components, Recoil leaders, Atmospheric Electricity,
Bidirectional leader model.",
abstract = "There has been some discussion concerning the nature of luminosity
pulses observed during the continuing currents of positive
cloud-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 = "Vienna Vienna",
conference-year = "2 - 7 Set., 2012",
doi = "10.1109/ICLP.2012.6344338",
url = "http://dx.doi.org/10.1109/ICLP.2012.6344338",
isbn = "9781467318976",
label = "lattes: 4161737266837399 1 CamposSaba:2012:CoAn",
language = "en",
volume = "1",
urlaccessdate = "21 maio 2024"
}