Physics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3116107o&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 16, CiteID L16107
Physics
7
Meteorology And Atmospheric Dynamics: Lightning, Meteorology And Atmospheric Dynamics: Instruments And Techniques, Meteorology And Atmospheric Dynamics: Numerical Modeling And Data Assimilation
Scientific paper
The return-stroke propagation speeds of five strokes from a seven-stroke triggered lightning flash are measured, with a 2 ns sampling interval, using a vertical array of photodiodes. Various methods for determining the reference point to be tracked are explored, and the speed is seen to vary over nearly an order of magnitude depending upon which method is chosen. The speeds are generally in agreement with the values found in the literature. The return-stroke speed appears to increase with height and then decrease with height in four of the five strokes examined.
Grimes N.
Jordan Douglas M.
Olsen Richard Christopher
Rakov Vladimir A.
Uman Martin A.
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