An analysis of the initiation of upward flashes from tall towers with particular reference to Gaisberg and Säntis towers

Smorgonskiy, Alexander (EMC Laboratory, EPFL, Lausanne, Switzerland) ; Tajalli, Alaleh (EMC Laboratory, EPFL, Lausanne, Switzerland) ; Rachidi, Farhad (EMC Laboratory, EPFL, Lausanne, Switzerland) ; Rubinstein, Marcos (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Diendorfer, Gerhard (ALDIS, OVE, Vienna, Austria)

In this paper, we present an analysis of the lightning events preceding initiation of upward lightning flashes from the Gaisberg and the Säntis Towers. It is found that the majority of upward lightning discharges from both towers are initiated without any preceding lightning activity. We show also that the results of the presented studies on the initiation of upward flashes from tall structures might be affected by the selected parameters of the study, namely the time and distance intervals used to identify the triggering events. Preceding events had the same polarity as triggered flashes in the case of the Säntis Tower and had opposite polarities in the case of the Gaisberg Tower. The effect of seasonal and temperature variations have been also analyzed.


Keywords:
Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
IICT - Institut des Technologies de l'Information et de la Communication
Date:
2015-07
Pagination:
6 p.
Published in:
Journal of Atmospheric and Solar-Terrestrial Physics
Numeration (vol. no.):
2015, vol. 136, pp. 46-51
DOI:
ISSN:
1364-6826
Appears in Collection:

Note: The status of this file is: restricted


 Record created 2020-10-20, last modified 2020-10-27

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