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http://dx.doi.org/10.5207/JIEIE.2005.19.6.059

Features and Statistics on the Magnetic Field Waveforms Radiated by Intracloud Discharges  

Lee, Bok-Hee (인하대학교 전자전기공학부)
Lee, Dong-Moon (인하대학교 대학원 전기공학과)
Cho, Sung-Cheol (인하대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.19, no.6, 2005 , pp. 59-66 More about this Journal
Abstract
This paper presents some features and statistics of electromagnetic pulses radiated from intracloud lightning discharges. The LabVIEW based-measurement system of time-dependent electromagnetic fields was constructed. The frequency bandwidth of the measuring system ranged from 300[Hz] to 1[MHz], and the response sensitivity was 2.78(mV/nT). The resolution and the maximum recording length of the data acquisition system were 12(bits) and 100[ms], respectively. In the electromagnetic pulses radiated from intracloud discharges, a pronounced bipolar pulse appeared with one or more fast pulses superimposed on the initial front part of the bipolar pulse. The mean duration of intracloud discharges was $1.05{\pm}0.32[ms]$, and an average of about 8 outburst pulses appeared for a period.
Keywords
Intracloud discharge; Lightning electromagnetic pulse; Surge protective device; Transient data acquisition system;
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