electric field signatures in wideband, 3 mhz and 30 mhz of negative ground flashes pertinent to swedish thunderstorms

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ID: 177844
2015
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Abstract
In this study, the electric field signatures of negative ground flashes pertinent to the Swedish thunderstorms were recorded simultaneously during the summer of 2014 using wide (up to 100 MHz) and narrow (at 3 MHz and 30 MHz as central frequencies) bandwidth antenna systems. The electric field signatures were recorded for a time duration of 250 ms. In the analysis, the whole flash was considered and a total of 98 flashes were chosen where electric field signatures of all wideband, 3 MHz and 30 MHz signals were present. It is observed that preliminary breakdown pulses are stronger radiators at 3 and 30 MHz compared to the return strokes. A comparison of our results with those of the previous studies obtained from different geographical regions clearly shows that the strength of preliminary breakdown pulses is higher in the temperate region (Sweden for instance) and is a function of latitude.
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ismail2015atmosphereelectric Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Mohd Muzafar Ismail;Mahbubur Rahman;Vernon Cooray;Shriram Sharma;Pasan Hettiarachchi;Dalina Johari
Journal Journal of the science of food and agriculture
Year 2015
DOI
10.3390/atmos6121837
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