On the Accuracy of Wait's Formula Along a Mixed Propagation Path Within 1 km from the Lightning Channel

Autor:	Yuanyuan Zhang, Dongshuai Li, Zhenhui Wang, Jinge Gao, Qilin Zhang
Rok vydání:	2012
Předmět:	Electromagnetic field Physics Meteorology Field (physics) Finite-difference time-domain method Condensed Matter Physics Geodesy Lightning Atomic and Molecular Physics and Optics Ground conductivity Electric field Range (statistics) Waveform Electrical and Electronic Engineering
Zdroj:	IEEE Transactions on Electromagnetic Compatibility. 54:1042-1047
ISSN:	1558-187X 0018-9375
DOI:	10.1109/temc.2012.2190765
Popis:	We have examined the accuracy of Wait's formula for evaluating lightning vertical electric field and azimuthal magnetic field over a mixed propagation path (vertically stratified) by using the finite-difference time-domain (FDTD) technique at near (200 m) and intermediate (1000 m) distance range from the lightning channel. For the first return stroke, Wait's formula has a reasonable accuracy for predicting lightning electromagnetic fields within distances of 1000 m. However, for the subsequent return stroke, although Wait's formula predicts the nearly same field peaks as that by FDTD no matter how the ground conductivity is vertically stratified, some waveform differences can be observed at the early-time response within a few microseconds. Therefore, Wait's formula may cause some errors for predicting the field derivates within tens or hundreds of meters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::988340309037957f085c037f75e6bf75 https://doi.org/10.1109/temc.2012.2190765 Zobrazit plný text záznamu