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DOI | 10.1029/2019JD031130 |
Temporal and Spatial Characteristics of Preliminary Breakdown Pulses in Intracloud Lightning Flashes | |
Shi, Dongdong; Wang, Daohong; Wu, Ting; Takagi, Nobuyuki | |
2019-12-13 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Japan |
英文摘要 | We have studied the temporal and spatial characteristics of preliminary breakdown (PB) pulses in 32 normal intracloud flashes recorded by a fast antenna lightning mapping array system called Fast Antenna Lightning Mapping Array. It was found that PB processes started with a stage of preliminary isolated pulses (PIPs) and followed by classic PB pulse (PBP) clusters. A typical PIP stage consists of two or three PIPs and on average lasts about 129 mu s. A typical PBP cluster consists of several narrow pulses (NPs) and one classic PBP and on average lasts about 193 mu s. During one PIP stage, the pulses occurring later usually have a lower altitude, indicating a kind of backward extension relative to the overall upward progression of PB process. On average, the horizontal and vertical extensions involved in a PIP stage are 60 and 216 m, respectively. In each PBP cluster, PBP is always located at the lowest height and behind its preceding NPs, while these NP locations could have various patterns in term of extension. On average, the overall horizontal and vertical extensions involved in a typical PBP cluster are 161 and 515 m, respectively. For both the PIP stage and PBP cluster, their vertical extensions are apparently longer than their horizontal extensions, reflecting a predominantly vertical channel of PB process. Based on the temporal and spatial characteristics of PB pulses, we have proposed a model to interpret how the PIPs, NPs, and PBPs are produced. |
英文关键词 | Preliminary Breakdown Pulses Intracloud Lightning |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502697300001 |
WOS关键词 | INITIAL BREAKDOWN |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225874 |
专题 | 环境与发展全球科技态势 |
作者单位 | Gifu Univ, Dept Elect Elect & Comp Engn, Gifu, Japan |
推荐引用方式 GB/T 7714 | Shi, Dongdong,Wang, Daohong,Wu, Ting,et al. Temporal and Spatial Characteristics of Preliminary Breakdown Pulses in Intracloud Lightning Flashes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019. |
APA | Shi, Dongdong,Wang, Daohong,Wu, Ting,&Takagi, Nobuyuki.(2019).Temporal and Spatial Characteristics of Preliminary Breakdown Pulses in Intracloud Lightning Flashes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES. |
MLA | Shi, Dongdong,et al."Temporal and Spatial Characteristics of Preliminary Breakdown Pulses in Intracloud Lightning Flashes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2019). |
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