Results 31 to 40 of about 380,531 (310)

Features of K-Changes Observed in Sri Lanka in the Tropics

Atmosphere, 2019
General characteristics of K-changes, including their duration and probability of occurrence associated with ground flashes in Sri Lanka in the tropics, together with their fine structure, are presented.
Sankha Nanayakkara, Mahendra Fernando, Vernon Cooray   +2 more
doaj   +1 more source

Relationship Between Current Characteristics of Rocket-triggered Lightning During Different Discharge Stages

应用气象学报, 2020
The research on rocket-triggered lightning has made great progress since 1967. Various parts of rocket-triggered lightning are studied, but differences between initial stages of different types of rocket-triggered lightning and the relevance on each part
Wang Jingxuan, Zhang Yang, Chen Zefang, Sun Xiubin, Fan Yanfeng, Zheng Dong, Fan Xiangpeng, Lü Weitao, Zhang Yijun   +8 more
doaj   +1 more source

Correlation between Frequency-Divided Magnetic Field and Channel-Base Current for Rocket-Triggered Lightning

Remote Sensing, 2023
Different discharge processes of triggered lightning can radiate electromagnetic signals with different frequency bands. During the triggered-lightning experiment conducted at the Field Experiment Base on Lightning Sciences of China Meteorological ...
Yanfeng Fan, Yang Zhang, Weitao Lyu, Ying Ma, Bin Wu, Qi Qi, Dong Zheng, Gaopeng Lu, Ankun Wu   +8 more
doaj   +1 more source

Determination of Lightning Currents from Far Electromagnetic Fields: Effect of a Strike Object [PDF]

, 2007
We discuss in this paper the influence of the presence of an elevated strike object on the peak of the lightning return stroke current determined from remote field measurements.
A.M. Hussein, Cummins, D. Pavanello, F. Rachidi, Herodotou, J.L. Bermudez, J.S. Chang, M. Paolone, M. Rubinstein, Motoyama, Rachidi, Rachidi, Rakov, Rakov, Thottappillil, Uman, V. Shostak, W. Janischewskyj, Willett   +18 more
core   +1 more source

The influence of psychiatric morbidity on return to paid work after stroke in younger adults: The auckland regional community stroke (ARCOS) study, 2002 to 2003 [PDF]

, 2008
BACKGROUND AND PURPOSE-: Few data exist on the determinants of return to paid work after stroke, yet participation in employment is vital to a person's mental well-being and role in society. This study aimed to determine the frequency and determinants of
Anderson, Craig, Glozier, N.S, Hackett, Maree, Parag, Varsha   +3 more
core   +1 more source

Karakteristik Preliminary Breakdown Petir Downward Leader Sebelum Sambaran Negatif Pertama

Jurnal Nasional Teknik Elektro, 2014
A hundred lightning flash was observed in Padang city, West Sumatera at January until Mei 2013. The lightning that use to analyze is proceeding with preliminary breakdown pulse (PBP) train and followed by first negative return stroke (RS).  Fast antenna
Zulka Hendri, Ariadi Hazmi
doaj   +3 more sources

Parametric Reconstruction Method for the Long Time-Series Return-Stroke Current of Triggered Lightning Based on the Particle Swarm Optimization Algorithm

IEEE Access, 2020
The lightning research group of the Chinese Academy of Meteorological Sciences has carried out observations and experiments with artificially triggered lightning for more than ten years, and it accumulated thousands of examples of channel base current ...
Xiangpeng Fan, Wen Yao, Yang Zhang, Liangtao Xu, Yijun Zhang, Paul R. Krehbiel, Dong Zheng, Hengyi Liu, Weitao Lyu, Shaodong Chen, Zhengshuai Xie   +10 more
doaj   +1 more source

Exact Expressions for Lightning Electromagnetic Fields: Application to the Rusck Field-to-Transmission Line Coupling Model

Atmosphere, 2023
An exact analytical expression for the electric field of the return stroke as excited by a propagating step current source is derived in this paper. This expression could be advantageously used to evaluate the disturbances caused by lightning on overhead
Vernon Cooray, Gerald Cooray, Marcos Rubinstein, Farhad Rachidi   +3 more
doaj   +1 more source

Characteristics of different charge transfer modes in upward flashes inferred from simultaneously measured currents and fields

High Voltage, 2019
The authors present an analysis of different charge transfer modes during upward negative flashes. The analysis includes a total number of 94 pulses that occurred during two upward negative flashes recorded at the Säntis Tower.
Lixia He, Mohammad Azadifar, Quanxin Li, Marcos Rubinstein, Vladimir A. Rakov, Vladimir A. Rakov, Arturo Mediano, Davide Pavanello, Farhad Rachidi   +8 more
doaj   +1 more source

Some features of stepped and dart-stepped leaders near the ground in natural negative cloud-to-ground lightning discharges [PDF]

Annales Geophysicae, 2002
Characteristics of the electric fields produced by stepped and dart-stepped leaders 200 µs just prior to the return strokes during natural negative cloud-to-ground (CG) lightning discharges have been analyzed by using data from a broad-band slow ...
X. Qie, X. Qie, Y. Yu, C. Guo, P. Laroche, G. Zhang, Q. Zhang   +6 more
doaj   +1 more source