Results 21 to 30 of about 3,916 (177)

Characteristics of Medium-low Frequency Magnetic Fields of Initial Continuous Current in Rocket-triggered Lightning

open access: yes应用气象学报, 2020
Rocket-triggered lightning experiment conducted in Field Experiment Base on Lightning Sciences, China Meteorological Administration (CMA_FEBLS) provides a good opportunity to study the discharge process and its related electromagnetic effects. During the
Fan Yanfeng   +5 more
doaj   +1 more source

Characterization of return‐stroke currents in rocket‐triggered lightning [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2009
We present a statistical analysis of the salient characteristics of current waveforms for 206 return strokes in 46 rocket‐triggered lightning flashes. The flashes were triggered during a variety of experiments related to the interaction of lightning with power lines that were conducted from 1999 through 2004 at the International Center for Lightning ...
J. Schoene   +8 more
openaire   +1 more source

In-flight measurements of energetic radiation from lightning and thunderclouds [PDF]

open access: yes, 2015
In the certification procedure aircraft builders carry out so-called icing tests flights, where the zero degree Celsius altitude is deliberately sought and crossed in or under thunderstorms. Airbus also used these flights to test ILDAS, a system aimed to
Bardet, M.   +4 more
core   +6 more sources

Application of Genetic Algorithm to Estimation of Function Parameters in Lightning Currents Approximations

open access: yesInternational Journal of Antennas and Propagation, 2017
Genetic algorithm (GA) is applied for the estimation of two-peaked analytically extended function (2P-AEF) parameters in this paper. 2P-AEF is used for approximation of measured and typical lightning discharge currents.
V. Javor   +3 more
doaj   +1 more source

X-ray Observations at Gaisberg Tower

open access: yesAtmosphere, 2018
We report the occurrence of X-rays at ground level due to cloud-to-ground flashes of upward-initiated lightning from Gaisberg Tower, in Austria, which is located at an altitude of 1300 m.
Pasan Hettiarachchi   +5 more
doaj   +1 more source

Initiation processes of return strokes in rocket‐triggered lightning [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2013
AbstractUsing a high speed optical imaging system operated at a time resolution of either 10 ns or 100 ns, we have documented the initiation process of 14 return strokes in four rocket‐triggered lightning flashes. Of the 14 strokes, nine occurred following dart leaders and five following dart‐stepped leaders. The return strokes are found to initiate at
D. Wang   +5 more
openaire   +1 more source

Measurements of x‐ray emission from rocket‐triggered lightning [PDF]

open access: yesGeophysical Research Letters, 2004
We report measurements of the x‐ray emission from rocket‐triggered lightning, made during the summer of 2003, using four instruments placed between 15 and 40 m from the lightning channels. X‐rays were measured 0–80 μs just prior to and at the beginning of 73% of the 26 return strokes observed. The emission was composed of multiple, very brief bursts of
J. R. Dwyer   +11 more
openaire   +1 more source

Wave Profile for Breakdown Waves with a Large Current Behind the Wave Front [PDF]

open access: yes, 2017
For analytical solution of breakdown waves with a large current behind the wave front, we employ a one-dimensional, steady-state, three-component (electrons, ions, and neutral particles) fluid model.
Bowman, M., Griffiths, J., Hemmati, M.
core   +3 more sources

Observations on Electromagnetic and X-ray Radiations from Leader-return-stroke Process in Rocket-triggered Lightning

open access: yes应用气象学报
The negative dart leader-return-stroke process, accompanied by broadband electromagnetic radiation and high-energy emissions, represents a key focus in lightning physics. During the summer of 2023, collaborative observations of rocket-triggered lightning
Li Xiao   +7 more
doaj   +1 more source

Initial stage in lightning initiated from tall objects and in rocket‐triggered lightning [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2005
We examine the characteristics of the initial stage (IS) in object‐initiated lightning derived from current measurements on the Gaisberg tower (100 m, Austria), the Peissenberg tower (160 m, Germany), and the Fukui chimney (200 m, Japan) and their counterparts in rocket‐triggered lightning in Florida.
M. Miki   +9 more
openaire   +1 more source

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