Burst of intracloud current pulses during the initial continuous current in a rocket-triggered lightning flash

被引：46

作者：

Lu, Gaopeng ^{[1
,2
]}

Jiang, Rubin ^{[1
,2
]}

Qie, Xiushu ^{[1
,2
]}

Zhang, Hongbo ^{[1
,3
]}

Sun, Zhuling ^{[1
]}

Liu, Mingyuan ^{[1
]}

Wang, Zhichao ^{[1
,3
]}

Liu, Kun ^{[4
]}

机构：

[1] Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing, Jiangsu, Peoples R China

[3] Univ Chinese Acad Sci, Beijing, Peoples R China

[4] Chengdu Univ Informat & Technol, Inst Elect Engn, Chengdu, Peoples R China

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 24期

关键词：

rocket-triggered lightning; positive leader stepping; initial continuous current; low-frequency magnetic radiation; FIELDS; STAGE;

D O I：

10.1002/2014GL062127

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

For a rocket-triggered lightning flash on 2 August 2013, the measurement with one pair of broadband low-frequency (20-400kHz) magnetic induction coils registered a long sequence of over 600 intermittent pulses during the initial continuous current. The timescale of these pulses is about 3-8 mu s, and the typical interpulse interval is about 30 mu s. The source discharges of these pulses, which are not readily detectable in the frequency range (140-300MHz) of a short-baseline very high frequency (VHF) lightning imaging system, are attributed to the stepping processes when the positive leader propagated into the cloud region. The reversals in the polarity of magnetic pulses are related to the variation in the vertical direction of positive leader propagation as resolved by the VHF imaging system.

引用

页码：9174 / 9181

页数：8

共 24 条

[1] 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

[2] Observations of the initial, upward-propagating, positive leader steps in a rocket-and-wire triggered lightning discharge [J].

Biagi, Christopher J. ;

Uman, M. A. ;

Hill, J. D. ;

Jordan, D. M. .

GEOPHYSICAL RESEARCH LETTERS, 2011, 38

[3] ON THE CHARACTERISTICS OF SOME RADIATION-FIELDS FROM LIGHTNING AND THEIR POSSIBLE ORIGIN IN POSITIVE GROUND FLASHES [J].

COORAY, V ;

LUNDQUIST, S .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1982, 87 (NC13) :1203-1214

[4] Broadband interferometer observations of a triggered lightning [J].

Dong, WS ;

Liu, XS ;

Yu, Y ;

Zhang, YJ .

CHINESE SCIENCE BULLETIN, 2001, 46 (18) :1561-1565

[5] VHF lightning mapping observations of a triggered lightning flash [J].

Edens, H. E. ;

Eack, K. B. ;

Eastvedt, E. M. ;

Trueblood, J. J. ;

Winn, W. P. ;

Krehbiel, P. R. ;

Aulich, G. D. ;

Hunyady, S. J. ;

Murray, W. C. ;

Rison, W. ;

Behnke, S. A. ;

Thomas, R. J. .

GEOPHYSICAL RESEARCH LETTERS, 2012, 39

[6] RESEARCH ON ARTIFICIALLY TRIGGERED LIGHTNING IN FRANCE [J].

FIEUX, RP ;

GARY, CH ;

HUTZLER, BP ;

EYBERTBERARD, AR ;

HUBERT, PL ;

MEESTERS, AC ;

PERROUD, PH ;

HAMELIN, JH ;

PERSON, JM .

IEEE TRANSACTIONS ON POWER APPARATUS AND SYSTEMS, 1978, 97 (03) :725-733

[7] Initial-stage pulses in upward lightning: Leader/return stroke versus M-component mode of charge transfer to ground [J].

Flache, D. ;

Rakov, V. A. ;

Heidler, F. ;

Zischank, W. ;

Thottappillil, R. .

GEOPHYSICAL RESEARCH LETTERS, 2008, 35 (13)

[8] Correlated lightning mapping array and radar observations of the initial stages of three sequentially triggered Florida lightning discharges [J].

Hill, J. D. ;

Pilkey, J. ;

Uman, M. A. ;

Jordan, D. M. ;

Rison, W. ;

Krebhiel, P. R. ;

Biggerstaff, M. I. ;

Hyland, P. ;

Blakeslee, R. .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2013, 118 (15) :8460-8481

[9] Geometrical and electrical characteristics of the initial stage in Florida triggered lightning [J].

Hill, J. D. ;

Pilkey, J. ;

Uman, M. A. ;

Jordan, D. M. ;

Rison, W. ;

Krehbiel, P. R. .

GEOPHYSICAL RESEARCH LETTERS, 2012, 39

[10] Propagating features of upward positive leaders in the initial stage of rocket-triggered lightning [J].

Jiang, Rubin ;

Qie, Xiushu ;

Wang, Caixia ;

Yang, Jing .

ATMOSPHERIC RESEARCH, 2013, 129 :90-96

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