Numerical calculation in waveforms and peaks B_p in the magnetic fields B caused by the 'subsequent vertical lightning return strokes to grounded tall structures of downward and upward flashes' and the 'first vertical lightning return strokes to grounded tall structures of upward flashes' on conventional methods

摘要

The result in the numerical calculation, using the modeling in the "subsequent vertical lightning return strokes to grounded tall structures (200 m in height H_i) of downward and upward flashes" and the "first vertical lightning return strokes to grounded tall structures of upward flashes" 0.25/50 μs, 1/50 (μs and 2/50 μs 11.2 kA in peaks, in the waveforms and peaks B_p in the magnetic fields B caused by the vertical lightning return strokes to the grounded tall structures in "velocity on the vertical lightning return strokes to grounded tall structures v 5.0 × 10 ~7 m/s" and "height on bottoms of lightning cloud H 1800 m" in conventional methods on the variation in "evaluation points horizontally from channels in the vertical lightning return strokes to grounded tall structures D 330 m, 630 m, 910 m, 7.45 km and 11.03 km and vertically from the flat ground L 1.5 m" is reported to be eventually compared to the "conventional result on measurement in waveforms and peaks B_p in the magnetic fields B caused by a subsequent lightning return stroke to a grounded tall structure (a vertical chimney 200 m in height H_i)" on similar condition, respectively. In the similar condition, broadly speaking, the tendencies on "result on numerical calculation in waveforms and peaks S_p in the magnetic fields § caused by the vertical lightning return strokes to grounded tall structures 0.25/50 μs, 1/50 μs and 2/50 μs 11.2 kA in peaks in conventional methods" are similar to the tendencies on "conventional result on measurement in waveforms and peaks B_p in the magnetic fields B caused by a subsequent lightning return stroke to a grounded tall structure", respectively.