Results 151 to 160 of about 3,916 (177)

Rocket-triggered lightning and new insights into lightning

Journal of Geophysical Research: Atmospheres, 2010
The rocket-and-wire technique has been routinely used since the 1970s to artificially initiate (trigger) lightning from natural thunderclouds for purposes of research and testing. Leader/return stroke sequences in triggered lightning are similar in most (if not all) respects to subsequent leader/return-stroke sequences in natural downward lightning and
D. Wang, V. A. Rakov, M. A. Uman, N. Takagi, T. Watanabe, D. E. Crawford, K. J. Rambo, G. H. Schnetzer, R. J. Fisher, Z.‐I. Kawasaki   +9 more
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Energetic Radiation Produced During Rocket-Triggered Lightning

Science, 2003
Using a NaI(Tl) scintillation detector designed to operate in electrically noisy environments, we observed intense bursts of energetic radiation (≫10 kiloelectron volts) during the dart leader phase of rocket-triggered lightning, just before and possibly at the very start of 31 out of the 37 return strokes measured.
Joseph R, Dwyer, Martin A, Uman, Hamid K, Rassoul, Maher, Al-Dayeh, Lee, Caraway, Jason, Jerauld, Vladimir A, Rakov, Douglas M, Jordan, Keith J, Rambo, Vincent, Corbin, Brian, Wright   +10 more
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Observation of lightning current in the soil by rocket-triggered lightning

2016 33rd International Conference on Lightning Protection (ICLP), 2016
In recent years, there has been a significant increase in the damage to electrical and electronic devices owing to lightning surge-induced overvoltage/overcurrent, in Japan. In particular, the lightning surge overcurrent that flows through grounding lines can cause serious damage to electronic equipment.
Shinji Yasui, Tetsuya Takuwa, Daisuke Morishima, Shinichi Sumi, Takeshi Morimoto, Kenji Horii   +5 more
openaire   +1 more source

Characteristics of current pulses in rocket-triggered lightning

Atmospheric Research, 2014
Data of lightning current pulses has significant value on the research of lightning physics and lightning protection. Compared with natural lightning, rocket-riggered lightning allows direct measurement of lightning current at the bottom of the channel.
Xiushu Qie, Rubin Jiang, Jing Yang
openaire   +1 more source

Aircraft and Rocket Triggered Natural Lightning Discharges

SAE Technical Paper Series, 1970
<div class="htmlview paragraph">Electrostatic field measurements in thunderstorms were obtained from the “Roughrider” F-100F aircraft, and from above storms with a U-2 aircraft. Analysis of data associated with lightning strikes to or near the aircraft indicates that most of the strikes occurred in a transition zone from positive over negative ...
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Calibration of the ENTLN against rocket-triggered lightning data

2013 International Symposium on Lightning Protection (XII SIPDA), 2013
We have estimated the ENTLN (formerly WTLN) performance characteristics using data for 245 negative return strokes in 55 flashes triggered from June of 2009 to August of 2012 at Camp Blanding, Florida. Performance characteristics are presented for both originally reported lightning data and reprocessed lightning data (the new processor was introduced ...
S. Mallick, V. A. Rakov, J. D. Hill, W. R. Gamerota, M. A. Uman, S. Heckman, C. D. Sloop, C. Liu   +7 more
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Measurements of radiation field signatures of rocket-triggered lightning

2010 International Conference on High Voltage Engineering and Application, 2010
In this paper, we describe the two-station measurements of triggered-lightning electromagnetic fields performed by the University of Florida Lightning Research Group in 2008–2009. Lightning is triggered at Camp Blanding, Florida, where near-field signals were recorded. Far-field signals were recorded at the Lightning Observatory in Gainesville, located
S. Mallick, A. Nag, V. A. Rakov
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Cutoff and reestablishment of current in rocket‐triggered lightning

Journal of Geophysical Research: Atmospheres, 2003
A total of three negative rocket‐triggered lightning flashes without return strokes (two from 1997 and one from 1993) are analyzed in this paper in order to study the processes associated with the disintegration of the triggering wire and its replacement by an air‐plasma channel. It appears that the gap resulting from the vaporization of the triggering
V. A. Rakov, D. E. Crawford, V. Kodali, V. P. Idone, M. A. Uman, G. H. Schnetzer, K. J. Rambo   +6 more
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Production of spherical plasmoid or ball lightning by rocket-triggered lightning

IEEE Conference Record - Abstracts. 1999 IEEE International Conference on Plasma Science. 26th IEEE International Conference (Cat. No.99CH36297), 2003
Summary form only given. The possibility of ball lightning formation by rocket-triggered lightning with a grounded trailing inductive coil has been suggested in my paper, 7E05: EHD and MHD Models of Fireballs and Their Relevance to Natural and Artificial Ball Lightning for the Oral Session 7E: 4.6 Spherical Configuration/Ball Lightning at the ICOPS 97,
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Rocket-Triggered Lightning Experiments at Camp Blanding, Florida

SAE Technical Paper Series, 1999
<div class="section abstract"><div class="htmlview paragraph">Classical and altitude rocket-and-wire techniques for triggering lightning discharges are described. New insights into lightning processes gained from triggered-lightning experiments are discussed.
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