Characteristics of radiation of lightning discharge in LF band

Author

Yoshida, Sigeru ; Ting Wu ; Ushio, Toshimitu ; Kusunoki, Kenichi

Author_Institution

Meteorol. Res. Inst., Tsukuba, Japan

fYear

2014

fDate

16-23 Aug. 2014

Firstpage

1

Lastpage

4

Abstract

We have been developing a LF sensor network, called Broadband Observation network for Lightning and Thunderstorm (BOLT), to image whole structure of lightning discharges in 3D. This paper documents initial results of BOLT source locations for further understanding of characteristics of LF radiations. Whole lightning flash of a cloud-to-cloud and a cloud-to-ground flashes, including preliminary breakdown pulses, negative leaders at both high and low altitudes, breakdown in negative charge region (NCR), and a pulse burst, are well imaged by the BOLT. Normalized radiation amplitudes of BOLT sources associated with negative leaders and breakdown in NCR do not differ so much, implying that most of BOLT sources in NCR might be associated with negative recoil leaders.

Keywords

atmospheric electromagnetic wave propagation; atmospheric techniques; lightning; radiometry; radiowave propagation; 3D imaging; BOLT source locations; Broadband Observation network for Lightning and Thunderstorm; LF band; LF sensor network; NCR; breakdown pulses; cloud-to-cloud flashes; cloud-to-ground flashes; lightning discharge radiation; lightning discharge whole structure imaging; negative charge region; negative leaders; negative recoil leaders; pulse burst; whole lightning flash; Discharges (electric); Fasteners; Fault diagnosis; Lightning; Position measurement; Three-dimensional displays;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI

Conference_Location

Beijing

Type

conf

DOI

10.1109/URSIGASS.2014.6929529

Filename

6929529