Thermospheric meridional wind control of equatorial spread F and evening prereversal electric field

被引：54

作者：

Abdu, MA ^{[1
]}

Iyer, KN

de Medeiros, RT

Batista, IS

Sobral, JHA

机构：

[1] Inst Nacl Pesquisas Espaciais, BR-12201970 Sao Jose Dos Campos, SP, Brazil

[2] Univ Fed Rio Grande do Norte, Dept Phys & Astron, BR-59072970 Natal, RN, Brazil

[3] Saurashtra Univ, Dept Phys, Rajkot 360005, Gujarat, India

来源：

GEOPHYSICAL RESEARCH LETTERS | 2006年 / 33卷 / 07期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1029/2005GL024835

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The role of the evening prereversal zonal electric field enhancement (PRE) as conducive to equatorial spread F (ESF)/plasma bubble development versus that of the magnetic meridional wind as a suppressing factor is examined using digital ionosonde data from an equatorial site, Sao Luis (SL), and a low latitude site, Cachoeira Paulista (CP) in Brazil. The evening vertical plasma drift (Vz) over SL is used, together with the F layer peak height (hmF2) over CP, to compute the magnetic meridional wind. The analysis performed for two epochs, that is, March-April of 1999 and 2001, provide consistent evidence that the magnetic meridional wind can negatively influence the ESF development in two ways: (a) by reduced development of the PRE and. (b) by direct suppression of the bubble growth.

引用

页数：4

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