Upward leader development from tall towers in response to downward stepped leaders

We present high-speed video observations (up to 11,000 images per second) of downward propagating negative stepped leaders and associated non-connecting and connecting upward leaders from tall towers in Rapid City, South Dakota, USA. These rare time-resolved optical observations allow for 2-dimensio...

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Bibliographic Details
Published in2010 30th International Conference on Lightning Protection (ICLP) pp. 1 - 4
Main Author Warner, Tom A.
Format Conference Proceeding
LanguageEnglish
Published University of Cagliari 01.09.2010
Subjects
Instruments
Lead
Magnetic analysis
Magnetic resonance imaging
Poles and towers
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Summary:We present high-speed video observations (up to 11,000 images per second) of downward propagating negative stepped leaders and associated non-connecting and connecting upward leaders from tall towers in Rapid City, South Dakota, USA. These rare time-resolved optical observations allow for 2-dimensional photogrammetric analysis of relative distances, geometry, speeds and timing between downward and upward leaders. These analyses are beneficial in quantifying natural lightning attachment processes and for comparison with current leader attachment models.
DOI:10.1109/ICLP.2010.7845809