| Title |
Parametric Analysis of the Electric and Magnetic Field Waveforms Produced by Intracloud Lightning Discharges |
| Authors |
Bok-Hee Lee ; Woo-Cheol Lee |
| Keywords |
Lightning flash ; Electric field ; Magnetic field ; Lightning return stroke ; Intracloud lightning discharge ; Waveform parameter |
| Abstract |
In this study, the electric and magnetic fields measuring system were designed and fabricated to investigate the electric characteristics of lightning discharges. Frequency bandwidth of electric field measuring system ranges from 40[㎐] to 2.6[㎒] and its response characteristic is 2.1[(V/m)/mV]. Frequency bandwidth of magnetic field measuring system ranges from 300[㎐] to 1[㎒] and its response characteristic is 2.8[nT/mV]. Electric and magnetic fields due to intracloud lightning discharges were observed and their waveform parameters were statistically analyzed. As a result, waveform parameters of electric and magnetic fields are nearly independent of polarity. The mean rise times and the zero-crossing times of electric and magnetic fields are approximately 5.5[㎲] and 21[㎲], respectively. |