Randomly stepped model for upward electrical discharge from top of thundercloud

被引：4

作者：

Tong, LZ ^{[1
]}

Nanbu, K

Fukunishi, H

机构：

[1] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Dept Geophys, Sendai, Miyagi 9808578, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2005年 / 74卷 / 04期

关键词：

upward electrical discharge; charge distribution of thundercloud; numerical modeling;

D O I：

10.1143/JPSJ.74.1093

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The upward electrical discharges from the tops of thunderclouds are investigated by a numerical simulation method in this study. Based on a positive dipole (positive above negative charge) charge structure of thunderclouds, a randomly stepped model is developed to simulate the growth of upward electrical discharges. It is found that an upward electrical discharge is preferred when the distance between the positive and negative charges of a thundercloud is large. The simulation reveals a three-dimensional (3D) overall feature of upward electrical discharges that are primarily terminated at an altitude below 40 kin, which is in agreement with observations of blue jets and blue starters.

引用

页码：1093 / 1095

页数：3

共 23 条

[1] THE CONDITIONS REQUIRED FOR THE PROPAGATION OF A CATHODE-DIRECTED POSITIVE STREAMER IN AIR [J].

ALLEN, NL ;

GHAFFAR, A .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1995, 28 (02) :331-337

[2]

KAGAWA Y, 1994, FEM PROGRAM I

[3]

KURADA H, 1993, PROGRAMMING ANAL 3D

[4] On the physics of lightning [J].

Lowke, JJ .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 2004, 32 (01) :4-17

[5]

MACGORMAN DR, 1998, ELECT NATURE STORMS, pCH7

[6] ELECTRIC-FIELD MAGNITUDES AND LIGHTNING INITIATION IN THUNDERSTORMS [J].

MARSHALL, TC ;

MCCARTHY, MP ;

RUST, WD .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1995, 100 (D4) :7097-7103

[7]

*NRC, 1986, EARTH ELECT ENV

[8] Three-dimensional modeling of blue jets and blue starters [J].

Pasko, VP ;

George, JJ .

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 2002, 107 (A12)

[9] Blue jets produced by quasi-electrostatic pre-discharge thundercloud fields [J].

Pasko, VP ;

Inan, US ;

Bell, TF .

GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (03) :301-304

[10] Electrical discharge from a thundercloud top to the lower ionosphere [J].

Pasko, VP ;

Stanley, MA ;

Mathews, JD ;

Inan, US ;

Wood, TG .

NATURE, 2002, 416 (6877) :152-154

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