Some properties of negative cloud-to-ground flashes from observations of a local thunderstorm based on accurate-stroke-count studies
Some properties of negative cloud-to-ground flashes from observations of a local thunderstorm based on accurate-stroke-count studies
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基于精确中风计数研究的局部雷暴观测中的负云地闪光的一些特性
DOI：
10.1016/j.jastp.2015.07.007
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发表时间：
2015-12
影响因子：
1.9
通讯作者：
Ma Dong
中科院分区：
文献类型：
--
作者：
Zhu Baoyou;Ma Ming;Xu Weiwei;Ma Dong
通过对一次局地雷暴的1085次负闪的精确计数研究，分析了负闪的特征，包括每次闪电的次数、闪电间隔以及随后闪电和首次闪电的相对强度。单次闪电的百分比和中风的多样性在整个研究雷暴的生命周期显着演变。负CG闪光的发生概率随着每次闪光次数的增加而呈指数级下降。约30.5%的负性CG闪光仅包含一个笔画，每个闪光的笔画数平均为3.3。在753个负多行程闪光的子集中，约41.4%包含至少一个比相应的第一行程更强的后续行程。随后的中风倾向于降低强度与他们的订单和随后的第一次中风峰值的比率提出了一个几何平均值为0.52。有趣的是，多重性较高的负CG闪光往往具有较强的初始中风。2525个卒中间期显示出或多或少的对数正态分布，几何平均值为62 ms。对于特定多重性的CG闪光，几何平均笔画间隔往往随着每次闪光笔画数的增加而减小，而与高阶笔画相关的那些间隔往往大于与低阶笔画相关的那些间隔。
Properties of negative cloud-to-ground (CG) lightning flashes, in terms of number of strokes per flash, inter-stroke intervals and the relative intensity of subsequent and first strokes, were presented by accurate-stroke-count studies based on all 1085 negative flashes from a local thunderstorm. The percentage of single-stroke flashes and stroke multiplicity evolved significantly during the whole life cycle of the study thunderstorm. The occurrence probability of negative CG flashes decreased exponentially with the increasing number of strokes per flash. About 30.5% of negative CG flashes contained only one stroke and number of strokes per flash averaged 3.3. In a subset of 753 negative multiple-stroke flashes, about 41.4% contained at least one subsequent stroke stronger than the corresponding first stroke. Subsequent strokes tended to decrease in strength with their orders and the ratio of subsequent to first stroke peaks presented a geometric mean value of 0.52. Interestingly, negative CG flashes of higher multiplicity tended to have stronger initial strokes. 2525 inter-stroke intervals showed a more or less log-normal distribution and gave a geometric mean value of 62 ms. For CG flashes of particular multiplicity geometric mean inter-stroke intervals tended to decrease with the increasing number of strokes per flash, while those intervals associated with higher order strokes tended to be larger than those associated with low order strokes.
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影响因子：
--
作者：
V. Rakov;M. Uman
通讯作者：
V. Rakov;M. Uman
影响因子：
--
作者：
KITAGAWA, N;WORKMAN, EJ;BROOK, M
通讯作者：
BROOK, M
影响因子：
--
作者：
V. Rakov;M. Uman;R. Thottappillil
通讯作者：
V. Rakov;M. Uman;R. Thottappillil
DOI：
10.1016/s1364-6826(02)00313-9
发表时间：
2003-02
影响因子：
1.9
作者：
F. Miranda;O. Pinto;M. Saba
通讯作者：
F. Miranda;O. Pinto;M. Saba
影响因子：
3.1
作者：
X. Qie;Ye Yu;Daohong Wang;Huibin Wang;R. Chu
通讯作者：
X. Qie;Ye Yu;Daohong Wang;Huibin Wang;R. Chu