Correlation between the channel‐bottom light intensity and channel‐base current of a rocket‐triggered lightning flash
Correlation between the channel‐bottom light intensity and channel‐base current of a rocket‐triggered lightning flash
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DOI：
10.1002/2014jd022367
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发表时间：
2014-12
期刊：
影响因子：
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通讯作者：
M. Zhou;D. Wang;J. Wang;N. Takagi;W. Gamerota;M. Uman;D. Jordan;J. Pilkey;T. Ngin
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文献类型：
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作者：
M. Zhou;D. Wang;J. Wang;N. Takagi;W. Gamerota;M. Uman;D. Jordan;J. Pilkey;T. Ngin
研究了火箭线触发闪电的初始连续电流(ICC)脉冲、ICC脉冲背景连续电流(IBCC)、回击行程、M分量和M分量背景连续电流(MBCC)等闪电放电全过程的通道底光强与通道基流之间的关系。在ICC脉冲(包括不同ICC脉冲的峰值)、IBCC、回程的初始上升阶段(IRS)(包括不同行程的电流峰值)和MBCC的电流平方和光强之间发现了大致的线性相关。ICC脉冲和IBCC脉冲的电流平方与光强的相关回归线的斜率相似，但大约比MBCC的斜率小2-3倍，比回击的IRS斜率小5-7倍。相反，对于回击的后期慢衰减阶段和M个分量，电流与光强之间存在大致的线性关系。对于后两个过程，电流与光强的相关回归线的斜率是相似的。在回击的初始快速衰减阶段(IFDS)，电流与光强度之间没有简单的相关性。回程的IFDS的持续时间一般从几微秒到几十微秒，并且或多或少与相应的峰值回程电流的平方成正比。在所有ICC脉冲和M分量的电流与光强度之间存在着从12微米S到300微米S的时间延迟。时间延迟随着相应的峰值电流的增加而减小。
The correlations between channel‐bottom light intensity and channel‐base current of all discharge processes of a rocket‐and‐wire‐triggered lightning flash, including initial continuous current (ICC) pulses, ICC pulse background continuing current (IBCC), return strokes, M components, and M component background continuing currents (MBCC), have been investigated. A rough linear correlation has been found between the current squared and the light intensity for ICC pulses (including peaks of different ICC pulses), IBCC, the initial rising stage (IRS) of return strokes (including current peaks of different strokes), and MBCC. The slopes of the correlation regression lines for the current squared versus light intensity of ICC pulses and IBCC are similar, but they are about 2–3 times smaller than the slopes of MBCC and 5–7 times smaller than the slopes of the IRS of return strokes. In contrast, a rough linear correlation has been found between the current and the light intensity for the later slow decay stage of return strokes and for the M components. The slopes of the correlation regression lines of the current versus the light intensity for these latter two processes are found to be similar. No simple correlation has been found between the current and the light intensity for the initial fast decay stage (IFDS) of return strokes. The duration of the IFDS of return strokes generally lasts from several microseconds to several tens of microseconds and is more or less directly proportional to the corresponding peak return stroke current squared. A time delay ranging from 12 µs to 300 µs has been found between the current and the light intensity of all ICC pulses and M components. The time delay decreases as the corresponding peak current increases.