Microwave and Very High Frequency Radiations of The First Narrow Initial BreakdownShow others and affiliations
2021 (English)In: 2021 35TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP) AND XVI INTERNATIONAL SYMPOSIUM ON LIGHTNING PROTECTION (SIPDA), IEEE Institute of Electrical and Electronics Engineers (IEEE), 2021Conference paper, Published paper (Refereed)
Abstract [en]
This paper reports the observation of microwave and very high frequency (VHF) radiation pulses associated with the first narrow (<10us) initial breakdown (IB) pulses of ten negative cloud-to-ground (-CG) flashes. The centre frequency of microwave and VHF sensors was 0.97 GHz and 60 MHz, respectively. We found that all microwave pulses were the initiation event led the first VHF pulses ranging between 0.03187 and 2.57968 mu s and led the first narrow IB pulses ranging between 0.02382 and 2.70202 mu s. Half of the VHF pulses were observed to lead the first narrow IB pulses ranging between 0.03453 and 0.128 mu s. Moreover, polarity of microwave radiation pulses was always positive while the polarity of the first narrow IB pulses always negative. On the other hand, half of VHF radiation pulses had the same polarity as microwave radiation pulses.
Place, publisher, year, edition, pages
IEEE Institute of Electrical and Electronics Engineers (IEEE), 2021.
Series
International Conference on Lightning Protection, ISSN 2469-8784
Keywords [en]
initial breakdown, microwave, very high frequency
National Category
Meteorology and Atmospheric Sciences
Identifiers
URN: urn:nbn:se:uu:diva-472322DOI: 10.1109/ICLPANDSIPDA54065.2021.9627385ISI: 000766834100029ISBN: 978-1-6654-2346-5 (print)OAI: oai:DiVA.org:uu-472322DiVA, id: diva2:1650736
Conference
35th International Conference on Lightning Protection (ICLP) / 16th International Symposium on Lightning Protection (SIPDA), SEP 20-26, 2021, ELECTR NETWORK
2022-04-082022-04-082025-02-07Bibliographically approved