A comparison of channel-base currents and optical signals for rocket-triggered lightning strokes

Wang, D.; Takagi, Nobuyuki; Watanabe, Teiji; Rakov, Vladimir A.; Uman, M. A.; Rambo, K. J.; Stapleton, M. V.

doi:10.1016/j.atmosres.2004.11.025

Cited by 70 publications

(59 citation statements)

References 15 publications

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“…28 Idone and Orville 29 have found a strong correlation between the peak current and peak luminosity of lightning. Wang et al 30 also confirmed that the current and light signals exhibit a linear relationship during the entire stage of current rising to the peak value from optical observation on rocket-triggered lightning. The total intensity of spectra is determined not only by the intensity of luminosity but also by the observation distance and exposure parameters of the spectrograph.…”

Section: B Data Analysismentioning

confidence: 57%

Analysis on the spectra and synchronous radiated electric field observation of cloud-to-ground lightning discharge plasma

Cen

Pan

et al. 2011

Physics of Plasmas

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Section: B Data Analysismentioning

confidence: 57%

Analysis on the spectra and synchronous radiated electric field observation of cloud-to-ground lightning discharge plasma

Cen

Pan

et al. 2011

Physics of Plasmas

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“…The use of film as a recording medium has some drawbacks, including limited resolution (both temporal and spatial) and non-linear response to incident light intensity. The recent advent of digital sampling and recording methods, along with the development of solid-state photodetectors, has allowed researchers to achieve finer resolution and increased linearity of data collection, typified by the work of Mach and Rust [1997, 1989a, 1989b and by the ALPS system employed by, among others, Wang et al [1999aWang et al [ , 1999bWang et al [ , 2004. The use of rocket-triggered lightning allows researchers to predict and determine more accurately the time and location of the termination of the lightning channel, and to prepare data collection instruments prior to the event.…”

Section: Introductionmentioning

confidence: 99%

Observed one‐dimensional return stroke propagation speeds in the bottom 170 m of a rocket‐triggered lightning channel

Olsen

Jordan

Rakov

et al. 2004

Geophysical Research Letters

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[1] The return-stroke propagation speeds of five strokes from a seven-stroke triggered lightning flash are measured, with a 2 ns sampling interval, using a vertical array of photodiodes. Various methods for determining the reference point to be tracked are explored, and the speed is seen to vary over nearly an order of magnitude depending upon which method is chosen. The speeds are generally in agreement with the values found in the literature. The return-stroke speed appears to increase with height and then decrease with height in four of the five strokes examined.

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“…It appears that the best means available for this purpose today is the temporal and spatial variation of the optical radiation generated by lightning return strokes. Indeed, the experimental data obtained for electrical discharges having current amplitudes similar to those of lightning [9] and for triggered lightning [18], show that the initial part of the optical radiation generated by a discharge channel element in air is qualitatively similar to that of the current waveform flowing through it. The best data set available today on the spatial and temporal variation of the optical radiation signal generated by the lightning channel is due to Jordan et al [10], [19].…”

Section: Constraints On the Corona Currentmentioning

confidence: 86%

On the Relationship Between the Signature of Close Electric Field and the Equivalent Corona Current in Lightning Return Stroke Models

Cooray

Rakov

Rachidi

et al. 2008

IEEE Trans. Electromagn. Compat.

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Abstract-Engineering return stroke models can be categorized either as current generation (traveling current source type) models or current propagation (transmission line type) models. The current generation models are described among other parameters by a corona current distributed along the channel. Recent studies show that there is equivalence between the models of current generation and current propagation types. Due to this equivalence, any engineering return stroke model of current propagation type can be described in terms of an equivalent corona current per unit channel length. The measurements conducted within 10-500 m from triggered lightning flashes show that the electric field of subsequent return strokes at these distances flattens within 15 µs or so. In this paper, the constraints imposed by this feature on the temporal and spatial variation of the equivalent corona current are investigated. The results show that in order for the close fields to flatten within 15 µs or so, the equivalent corona current, should be bipolar and the corona current wave shape at late times should be identical to that of the longitudinal current time derivative. This is in contrast to most of the engineering models of current generation type, in which the corona current is assumed to be unipolar.Index Terms-Equivalent corona current, lightning electric field, return stroke models.

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A comparison of channel-base currents and optical signals for rocket-triggered lightning strokes

Cited by 70 publications

References 15 publications

Analysis on the spectra and synchronous radiated electric field observation of cloud-to-ground lightning discharge plasma

Analysis on the spectra and synchronous radiated electric field observation of cloud-to-ground lightning discharge plasma

Observed one‐dimensional return stroke propagation speeds in the bottom 170 m of a rocket‐triggered lightning channel

On the Relationship Between the Signature of Close Electric Field and the Equivalent Corona Current in Lightning Return Stroke Models

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