EARLY TRIMPI EVENTS FROM LIGHTNING-INDUCED ELECTRIC-FIELDS IN THE IONOSPHERE - AN ALTERNATIVE EXPLANATION

被引：9

作者：

BURKE, WJ

机构：

[1] Geophysics Directorate: PL/OL-AA, Hanscom AFB

来源：

JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS | 1992年 / 54卷 / 02期

关键词：

D O I：

10.1016/0021-9169(92)90130-D

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Two classes of 'Trimpi' modulation of VLF signals in the Earth-ionosphere waveguide have been identified in the literature. The more common type occurs 1 s or more after causative lightning strokes, the second in less than 100 ms. We explore the possibility that these early Trimpi events result from lighting-generated, electric field impulses lowering the mirror altitudes of trapped electrons. To overcome the mirror force on energetic electrons, upward-directed electric fields with strengths of a few tens of mV/m are required. This is well within the range of electric fields observed on sounding rockets above thunderstorms.

引用

页码：205 / 208

页数：4

共 18 条

[1]

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[2] LONGITUDINAL DIFFERENCES IN ELECTRON-PRECIPITATION NEAR L = 4 [J].