The Attachment Process of Negative Connecting Leader to the Lateral Surface of Downward Positive Leader in a Positive Cloud-To-Ground Lightning Flash

被引：4

作者：

Qi, Qi ^{[1
,2
]}

Wu, Bin ^{[1
,2
]}

Lyu, Weitao ^{[1
,2
]}

Ma, Ying ^{[1
,2
]}

Chen, Lyuwen ^{[3
]}

Lyu, Fanchao ^{[1
,4
]}

Gao, Yan ^{[5
]}

机构：

[1] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing, Peoples R China

[2] Chinese Acad Meteorol Sci, CMA Key Lab Lightning, Beijing, Peoples R China

[3] China Meteorol Adm, Inst Trop & Marine Meteorol, Guangzhou, Peoples R China

[4] China Meteorol Adm, Nanjing Joint Inst Atmospher Sci, Key Lab Transportat Meteorol, Nanjing, Peoples R China

[5] Guangdong Hong Kong Macao Greater Bay Area Weather, Shenzhen, Peoples R China

来源：

GEOPHYSICAL RESEARCH LETTERS | 2023年 / 50卷 / 15期

基金：

中国国家自然科学基金;

关键词：

the lightning attachment process; positive cloud-to-ground flash; High-speed video observation; HIGH-SPEED VIDEO;

D O I：

10.1029/2023GL104887

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Using high-speed video cameras operating with framing rates of 20 and 50 kiloframes per second, we captured an attachment process during a positive cloud-to-ground flash, which demonstrates the connection of the negative connecting leader (NCL) to the lateral surface of the downward positive leader (DPL) for the first time. When the NCL was initiated, the tip of the DPL had passed the initiation position of the NCL for about 50 m. A common streamer zone (CSZ) was observed when the three-dimensional distance between the NCL tip and the lateral surface of DPL was about 30 m. It is remarkable to note that a luminous segment (space stem/leader) with a length of about 7 m was captured within the CSZ during the attachment process. The connection between the NCL tip and the lateral surface of the DPL was caused by the development of the CSZ and its inner space leader.

引用

页数：8

共 30 条

[1]

[Anonymous], 1966, Bulletin Schweiz. Elektrotech

[2] High-speed video observations of rocket-and-wire initiated lightning [J].

Biagi, C. J. ;

Jordan, D. M. ;

Uman, M. A. ;

Hill, J. D. ;

Beasley, W. H. ;

Howard, J. .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[3] High-speed video observations of natural cloud-to-ground lightning leaders - A statistical analysis [J].

Campos, Leandro Z. S. ;

Saba, Marcelo M. F. ;

Warner, Tom A. ;

Pinto, Osmar, Jr. ;

Krider, E. Philip ;

Orville, Richard E. .

ATMOSPHERIC RESEARCH, 2014, 135 :285-305

[4] Three-dimensional propagation characteristics of the upward connecting leaders in six negative tall-object flashes in Guangzhou [J].

Gao, Yan ;

Lu, Weitao ;

Ma, Ying ;

Chen, Luwen ;

Zhang, Yang ;

Yan, Xu ;

Zhang, Yijun .

ATMOSPHERIC RESEARCH, 2014, 149 :193-203

[5] The attachment process of rocket-triggered lightning dart-stepped leaders [J].

Hill, J. D. ;

Uman, M. A. ;

Jordan, D. M. ;

Ngin, T. ;

Gamerota, W. R. ;

Pilkey, J. ;

Caicedo, J. .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2016, 121 (02) :853-871

[6] High-speed video observations of a lightning stepped leader [J].

Hill, J. D. ;

Uman, M. A. ;

Jordan, D. M. .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2011, 116

[7] Fine Structure of the Breakthrough Phase of the Attachment Process in a Natural Lightning Flash [J].

Jiang, Rubin ;

Srivastava, Abhay ;

Qie, Xiushu ;

Yuan, Shanfeng ;

Zhang, Hongbo ;

Sun, Zhuling ;

Wang, Dongfang ;

Wang, Caixia ;

Lv, Guanlin ;

Li, Zongxiang .

GEOPHYSICAL RESEARCH LETTERS, 2021, 48 (06)

[8]

Lu WT, 2010, INT CONF LIGHTN PROT

[9] Two basic leader connection scenarios observed in negative lightning attachment process [J].

Lu, Weitao ;

Qi, Qi ;

Ma, Ying ;

Chen, Luwen ;

Yan, Xu ;

Rakov, Vladimir A. ;

Wang, Daohong ;

Zhang, Yijun .

HIGH VOLTAGE, 2016, 1 (01) :11-17

[10] Three-dimensional propagation characteristics of the leaders in the attachment process of a downward negative lightning flash [J].

Lu, Weitao ;

Gao, Yan ;

Chen, Luwen ;

Qi, Qi ;

Ma, Ying ;

Zhang, Yang ;

Chen, Shaodong ;

Yan, Xu ;

Chen, Chang ;

Zhang, Yijun .

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2015, 136 :23-30

← 1 2 3 →