Lightning sferics and stroke-delayed pulses measured in the stratosphere: Implications for mesospheric currents

被引：4

作者：

Thomas, JN

Holzworth, RH

McCarthy, MP

Pinto, O

机构：

[1] Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA

[2] Natl Inst Space Res INPE, BR-12227010 Sao Jose Dos Campos, SP, Brazil

来源：

GEOPHYSICAL RESEARCH LETTERS | 2005年 / 32卷 / 22期

关键词：

D O I：

10.1029/2005GL024629

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

During the Brazil Sprite Balloon Campaign 2002 - 03, the vector ELF to VLF ( 25 Hz - 8 kHz) electric and magnetic fields driven by cloud-to-ground (CG) lightning strokes at horizontal distances of 75 - 600 km were measured at altitudes of 30 - 35 km. Electric field changes were measured for each of the 2467 CG strokes detected by the Brazilian Integrated Lightning Network. ELF pulses that occur 4 - 12 ms after the retarded time of the lightning sferic, which have been previously attributed to sprites, were found for 1.4% of 934 strokes examined. Thus, lightning-driven electric and magnetic field changes were common and stroke-delayed ELF pulses were rare, which disagrees with results from the Sprites99 Balloon Campaign.

引用

页码：1 / 4

页数：4

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