Characteristics of the Electric Field Waveform Associated with Cloud-to-Ground Lightnung Discharges

초록

In this paper, in order to obtain the statistic information for parameters of electric field waveforms associated with cloud-to-ground lightning discharges, the electric field radiated from cloud-to-ground lightning discharges was measured by a hemisphere-type electric field sensor, which was installed at the schoolyard of Inha University in Inchon, Korea. The electric field measuring system consists of hemisphere antenna 30cm in diameter, integrator and data acquistion device. Its frequncy bandwith is 200Hz to 1.56MHz, and its sensitivity is 0.96 mV/V/m. The signals of the electric field were continuously recorded by a transient digitizer having the resolution of 12 bits and the memory capacity of 5000 points per one event.