TY - JOUR A2 - Li, Ping AU - Adhikari, Pitri Bhakta AU - Sharma, Shriram PY - 2020 DA - 2020/01/10 TI - Characteristic Features of Electric Fields Radiated by Cloud Flashes in Himalayan Region SP - 6187635 VL - 2020 AB - Electric fields radiated by cloud flashes that occurred over the rugged terrain of mountainous country Nepal were recorded, analysed, and compared with those from different geographical regions. The total duration of the flash varies from 80 to 469.5 ms. The majority of the cloud flashes were of two stages: the first stage of the majority of the flashes was found to consist of large microsecond scale bipolar pulses having negative initial polarity and the late stage consists of submicrosecond scale pulses having both positive and negative initial polarities. The average durations of the first and second stages are 11.23 and 66.79 ms, respectively, and the time gap between them is 53.57 ms. The cloud pulses led by the negative initial polarity pulses are more compactly distributed and are higher in mountainous countries as compared to those of flashes lead by positive initial polarity pulses, with the average values of interpulse interval being 211.42 and 309.79 μs, respectively. SN - 1687-5869 UR - https://doi.org/10.1155/2020/6187635 DO - 10.1155/2020/6187635 JF - International Journal of Antennas and Propagation PB - Hindawi KW - ER -