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  Observations of electrostatic field changes associated with K processes at different close ranges

Baoyou, Z., Zhou, H., Liu, F., Ma, M., Lu, G. (2023): Observations of electrostatic field changes associated with K processes at different close ranges, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4219

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021657 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021657_1
Genre: Conference Paper

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 Creators:
Baoyou, Zhu1, Author
Zhou, Helin1, Author
Liu, Feifan1, Author
Ma, Ming1, Author
Lu, Gaopeng1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: <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 107 m/s and the amount of charge involved of about a few tenths of coulombs.</h1>

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-4219
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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