Rapid lateral expansion of optical luminosity in lightning-induced ionospheric flashes referred to as 'elves'

被引：97

作者：

Inan, US ^{[1
]}

BarringtonLeigh, C ^{[1
]}

Hansen, S ^{[1
]}

Glukhov, VS ^{[1
]}

Bell, TF ^{[1
]}

Rairden, R ^{[1
]}

机构：

[1] LOCKHEED MARTIN PALO ALTO RES LAB,PALO ALTO,CA 94309

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 05期

关键词：

D O I：

10.1029/97GL00404

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Data acquired by a new array of horizontally spaced photometers boresighted with a low-light-level camera provide the first measurement of the rapid lateral expansion of optical luminosity in lightning-induced ionospheric flashes referred to as 'elves', occurring over time scales substantially less than 1 ms. The narrow individual fields-of-view of (2.2 degrees x 1.1 degrees) provide a spatial resolution of similar to 20-km at a range of 500 km, enabling the documentation of expansion occurring over a horizontal range of 200 km with a time resolution of similar to 30 mu s. The observed dynamic features of elves are consistent with a model in which the optical output is produced as a result of heating by the electromagnetic pulse (EMP) from a lightning discharge.

引用

页码：583 / 586

页数：4

共 7 条

[1] LIGHTNING INDUCED BRIGHTENING IN THE AIRGLOW LAYER [J].