Publication Date:
2023-07-07
Description:
〈h1〉Electrostatic field changes associated with K processes are known as K changes, which transfer significant charge moment during the discharge. By applying electric field change meters with the decay time constant of about 20-40ms, we report the observations of four cases of K changes by eight stations with sufficient time resolution and amplitude resolution. We find that the electric field changes of K processes appear as the typical step-like or ramp-like signatures at some places, however it can also suffer the polarity reversal thus appear as the hooked-like signature at closer places. An advancing streamer model was applied to account for signatures of electrostatic field changes at different places. It seems that K processes in this study involve a negative horizontal streamer, which serves to deposit negative charges at remote sources along the streamer channel, with a speed of the order of 10〈sup〉7〈/sup〉 m/s and the amount of charge involved of about a few tenths of coulombs.〈/h1〉
Language:
English
Type:
info:eu-repo/semantics/conferenceObject
Permalink
