Physics
Scientific paper
Jan 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3102111w&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 2, CiteID L02111
Physics
2
Electromagnetics: Guided Waves, Electromagnetics: Wave Propagation (4275), Meteorology And Atmospheric Dynamics: Atmospheric Electricity, Meteorology And Atmospheric Dynamics: Lightning, General Or Miscellaneous: Instruments Useful In Three Or More Fields
Scientific paper
Using a newly-developed high-speed digital optical system, we measured the luminosity profiles of four leader/return stroke sequences within a flash occurred on a high tower. By analyzing those profiles, we obtained two simple expressions to characterize the light pulse decay features of subsequent return strokes along the channel bottom 210 m. These expressions can be extended to return stroke pulse currents and be easily included in return stroke modeling. In addition, we found that the peak light intensity of a leader and its following return stroke at various heights correlates positively in the channel bottom 210 m.
Chihara A.
Liu Xiandong
Takagi Nozomi
Wang Dongming
Watanabe Ta.
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