VHF Emissions Prior to the Onset of Initial Electric Field Changes of Intracloud Flashes
| Autor: | Mohd Riduan Ahmad, Gaopeng Lu, M. H. M. Sabri, Vernon Cooray, S. A. Mohammad, Mohd Muzafar Ismail, N. Yusop, M. Z. A. A. Aziz, D. Periannan, Mona Riza Mohd Esa, B. Y. Seah, Zulkurnain Abdul-Malek |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences 020209 energy 02 engineering and technology Astrophysics Impulse (physics) digestive system 01 natural sciences Electric field parasitic diseases 0202 electrical engineering electronic engineering information engineering Thunderstorm Iec standards 0105 earth and related environmental sciences |
| Zdroj: | 2018 International Conference on Electrical Engineering and Computer Science (ICECOS). |
| DOI: | 10.1109/icecos.2018.8605235 |
| Popis: | We present the observation of VHF impulses electric (E) field emissions found in two normal intracloud (IC) flashes accompanied by initial electric field changes (IECs) in a tropical thunderstorm. The data was collected on November $23 ^{\mathbf {rd}}$, 2017 (within reversal distance) to our lightning sensor in Malacca, Malaysia. The durations from the onset of IECs to the first initial breakdown (IB) pulse are range between 0.68 and 0.69 ms and the magnitudes of IECs are range between 0.18 and 0.50 V/m. Besides that, before the onset of IECs there is small pulses was detected for IC flash (Nov_67) same with the VHF impulse for both IC flash. It was detected earlier before the onset of IEC by 12.69 and $251.60 \mu \mathrm {s}$ for the VHF impulse. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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