GPS L-band scintillations and ionospheric irregularity zonal drifts inferred at equatorial and low-latitude regions

被引：57
|
作者：
Muella, M. T. A. H. [1 ]
de Paula, E. R. [1 ]
Kantor, I. J. [1 ]
Batista, I. S. [1 ]
Sobral, J. H. A.
Abdu, M. A. [1 ]
Kintner, P. M. [2 ]
Groves, K. M.
Smorigo, P. F. [1 ]
机构：
[1] Inst Nacl Pesquisas Espaciais, Div Aeron, BR-12227010 Sao Jose Dos Campos, SP, Brazil
[2] Cornell Univ, Sch Elect & Comp Engn, Ithaca, NY 14853 USA
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2008年 / 70卷 / 10期
关键词：
ionospheric physics; ionospheric irregularities; equatorial ionosphere; instruments and techniques;
D O I：
10.1016/j.jastp.2008.03.013
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The main scientific objective of this research is to study the spatial variability and dynamics of the F-region irregularities. To achieve this, amplitude scintillations at the L-band, total electron content (TEC) and irregularity drifts were measured, as part of the Conjugate Point Equatorial Experiment (COPEX) campaign, by a network of ground-based global positioning system (GPS) receivers. The observations reveal a strong variability in the evolution of the irregularities from the equator to low-latitudes, and their zonal velocities at conjugate sites present a decrease with local time, and also with latitude. Moreover, the scintillations appear to be correlated with strong TEC gradients in the equatorward edge of the enhanced equatorial anomaly peaks. Other relevant aspects of the observations are highlighted and discussed. (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1261 / 1272
页数：12
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