NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.36 [2007] >
IJRSP Vol.36(4) [August 2007] >


Title: Characteristics of the ionospheric F-region plasma irregularities over Brazilian longitudinal sector
Authors: Paula, E R de
Kherani, E A
Abdu, M A
Batista, I S
Sobral, J H A
Kantor, I J
Takahashi, H
Rezende, L F C de
Muella, M T A H
Rodrigues, F S
Kintner, P M
Ledvina, B M
Mitchell, C
Groves, K M
Keywords: Ionospheric plasma irregularities
GPS scintillation monitor
Space based augmentation system (SBAS)
Issue Date: Aug-2007
Publisher: CSIR
PACS No.: 94.20.Yx; 94.20.Vv; 94.20.Ww
Abstract: Based on the data obtained from a network of GPS L1 band receivers deployed in Brazil, are presented here the characteristics of the 400 m ionospheric irregularities during magnetically quiet and disturbed conditions. The network is composed of 12 GPS scintillation monitors and covers the latitudinal region from the magnetic equator up to the southern crest of the Equatorial Ionization Anomaly (EIA), which is characterized by large horizontal gradients in the electron density distribution. Some results on equatorial spread-F statistics obtained from digisonde data over Cachoeira Paulista (22.41o S, 45o W, dip latitude 14.89o S) and from ionosonde data over Tucum├ín (64.5o W, 27o S, dip latitude 13.71o S) are also used in this work to complement the results from GPS network. The effects of local time, season, latitude, longitude, background ionization, solar cycle and magnetic activity on the ionospheric irregularities are presented. The ionospheric irregularity zonal velocities determined by magnetically east-west spaced GPS receivers are also presented. The influence of the ionospheric irregularities on GPS based navigational systems is discussed. These observations, complemented by computational simulations, may improve our understanding of the factors responsible for the generation, growth and dynamics of the equatorial F-region plasma irregularities.
Page(s): 268-277
ISSN: 0975-105X (Online); 0367-8393 (Print)
Source:IJRSP Vol.36(4) [August 2007]

Files in This Item:

File Description SizeFormat
IJRSP 36(4) 268-277.pdf1.72 MBAdobe PDFView/Open
 Current Page Visits: 712 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 625140 since 06-Feb-2009  Last updated on 28-Nov-2014Webmaster: nopr@niscair.res.in